# Instances

Live implementations observed on the agentic web. Every entry has a source; dates are the source's date where it gives one, otherwise the date we recorded it.

## Agents 10

- [Coordinate](/category/coordinate/)Observed 2026-05-30 [CoralSec Copilot](https://dev.to/codewithmehru/how-i-built-coralsec-copilot-a-unified-enterprise-soc-with-coral-nextjs-in-4-days-235o) Builder describes a unified enterprise SOC agent built on Coral Protocol's MCP/Coral SQL layer, joining GitHub/Sentry/Slack/Vercel data via Coral; evidence VERIFIED (builder's own first-person account).

 [Coral Protocol (CoralOS)](/protocols/coral-protocol/) · [source](https://dev.to/codewithmehru/how-i-built-coralsec-copilot-a-unified-enterprise-soc-with-coral-nextjs-in-4-days-235o)

- [Coordinate](/category/coordinate/)Observed 2026-05-31 [CoralTeams](https://dev.to/shrutik0101/building-coralteams-an-ai-powered-operational-intelligence-platform-with-coral-28l9) Team 'Hubble Telescope' built CoralTeams, an operational intelligence and collaboration platform on Coral Protocol unifying GitHub/Slack monitoring; evidence VERIFIED (builder's own first-person account).

 [Coral Protocol (CoralOS)](/protocols/coral-protocol/) · [source](https://dev.to/shrutik0101/building-coralteams-an-ai-powered-operational-intelligence-platform-with-coral-28l9)

- [Coordinate](/category/coordinate/)Observed 2026-06-05 [Elemen (AGTP browser)](https://chrishood.com/introducing-elemen-the-worlds-first-browser-for-the-agent-web/) A graphical desktop browser (pywebview-based) that renders any AGTP-registered agent as a browsable identity card; evidence VERIFIED (author's own announcement).

 [Agent Transfer Protocol](/protocols/agtp/) · [source](https://chrishood.com/introducing-elemen-the-worlds-first-browser-for-the-agent-web/)

- [Act](/category/act/)Recorded 2026-09-06 [Google Sheets demo agent](https://demo.wild-card.ai/googlesheets) Listed as an adopter in the agents.json record; evidence THIN.

 [agents.json](/protocols/agents-json/) · [source](https://demo.wild-card.ai/googlesheets)

- [Coordinate](/category/coordinate/)Observed 2026-05-31 [PatchPoint](https://dev.to/abhi_mishra/building-patchpoint-unifying-devops-security-silos-with-coral-sql-318h) Builder built PatchPoint, a vulnerability impact mapper on Coral SQL joining GitHub/Linear/Slack CVE data; evidence VERIFIED (builder's own first-person account).

 [Coral Protocol (CoralOS)](/protocols/coral-protocol/) · [source](https://dev.to/abhi_mishra/building-patchpoint-unifying-devops-security-silos-with-coral-sql-318h)

- [Coordinate](/category/coordinate/)Observed 2026-05-31 [Reef (Coral incident agent)](https://dev.to/grandkojo/how-we-built-reef-a-production-incident-agent-with-coral-sentry-webhooks-and-slack-ngg) Team built 'Reef', a production incident triage agent on Coral Protocol combining Sentry webhooks and Slack, for the Coral-bean hackathon; evidence VERIFIED (builder's own first-person account).

 [Coral Protocol (CoralOS)](/protocols/coral-protocol/) · [source](https://dev.to/grandkojo/how-we-built-reef-a-production-incident-agent-with-coral-sentry-webhooks-and-slack-ngg)

- [Act](/category/act/)Recorded 2026-09-06 [Resend demo agent](https://demo.wild-card.ai/resend) Listed as an adopter in the agents.json record; evidence THIN.

 [agents.json](/protocols/agents-json/) · [source](https://demo.wild-card.ai/resend)

- [Act](/category/act/)Recorded 2026-09-06 [Rootly demo agent](https://demo.wild-card.ai/rootly) Listed as an adopter in the agents.json record; evidence THIN.

 [agents.json](/protocols/agents-json/) · [source](https://demo.wild-card.ai/rootly)

- [Act](/category/act/)Recorded 2026-09-06 [Stripe demo agent](https://demo.wild-card.ai/stripe) Listed as an adopter in the agents.json record; evidence THIN.

 [agents.json](/protocols/agents-json/) · [source](https://demo.wild-card.ai/stripe)

- [Account](/category/account/)Observed 2026-03-07 [ZeroClaw](https://github.com/zeroclaw-labs/zeroclaw) 30K-star autonomous personal-assistant project merged a Rust-native Verifiable Intent lifecycle module implementing SD-JWT layered credentials for commerce agent authorization (opt-in, disabled by default); evidence VERIFIED.

 [Verifiable Intent](/protocols/vi/) · [source](https://github.com/zeroclaw-labs/zeroclaw/pull/2938)

## Businesses 117

- [Coordinate](/category/coordinate/)Observed 2026-04-09 [150+ supporting organizations (claimed by the A2A project at its one-year mark)](https://www.prnewswire.com/news-releases/a2a-protocol-surpasses-150-organizations-lands-in-major-cloud-platforms-and-sees-enterprise-production-use-in-first-year-302737641.html) Listed as an adopter in the Agent2Agent Protocol record; evidence VERIFIED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://www.prnewswire.com/news-releases/a2a-protocol-surpasses-150-organizations-lands-in-major-cloud-platforms-and-sees-enterprise-production-use-in-first-year-302737641.html)

- [Act](/category/act/)Observed 2026-05-27 [Adform](https://www.exchangewire.com/blog/2026/05/27/adform-adsquare-launch-industry-first-agentic-real-time-framework-integration/?amp=) Announced an industry-first production integration of the Agentic Real-Time Framework with Adsquare; evidence VERIFIED (their own press release).

 [Agentic Real Time Framework](/protocols/artf/) · [source](https://www.exchangewire.com/blog/2026/05/27/adform-adsquare-launch-industry-first-agentic-real-time-framework-integration/?amp=)

- [Coordinate](/category/coordinate/)Observed 2026-07-30 [Adform (agent workflow controls)](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/) Listed as an adopter in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/)

- [Account](/category/account/)Observed 2026-03-05 [Adyen, Basis Theory, Checkout.com, Getnet, Fiserv, IBM, Worldpay/Global Payments (alignment/planned integration quotes)](https://www.mastercard.com/global/en/news-and-trends/stories/2026/verifiable-intent.html) Listed as an adopter in the Verifiable Intent record; evidence REPORTED.

 [Verifiable Intent](/protocols/vi/) · [source](https://www.mastercard.com/global/en/news-and-trends/stories/2026/verifiable-intent.html)

- [Permit](/category/permit/)Observed 2026-08-14 [Aembit](https://aembit.io/blog/how-aauth-brings-human-approval-into-ai-agent-authorization/) Non-human-identity security vendor explains and positions AAuth for agent workload authorization, evidence VERIFIED (own blog).

 [Agent Authorization Grant](/protocols/aauth/) · [source](https://aembit.io/blog/how-aauth-brings-human-approval-into-ai-agent-authorization/)

- [Act](/category/act/)Observed 2026-06-10 [Affinity](https://ppc.land/affinity-joins-adcp-to-put-oem-and-browser-inventory-into-agentic-ad-standards/) Joined the Ad Context Protocol as a Founding Member to bring OEM/browser inventory into it; evidence VERIFIED (announced by the company).

 [Ad Context Protocol](/protocols/adcp/) · [source](https://ppc.land/affinity-joins-adcp-to-put-oem-and-browser-inventory-into-agentic-ad-standards/)

- [Discover](/category/discover/)Observed 2026-03-17 [AGNTCY / Cisco Outshift (OASF)](https://github.com/agntcy/oasf-sdk) Cisco Outshift-backed AGNTCY project actively ships and versions the Open Agentic Schema Framework SDK (v1.0.2), evidence VERIFIED.

 [Open Agentic Schema Framework](/protocols/oasf/) · [source](https://github.com/agntcy/oasf-sdk/commit/803338ee1c0e8888283eee6f3481ca7a87c1fef9)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [AGNTCY formative members: Cisco, Dell Technologies, Google Cloud, Oracle, Red Hat](https://www.techzine.eu/blogs/infrastructure/133408/cisco-donates-agntcy-to-linux-foundation-internet-of-agents-on-its-way/) Listed as an adopter in the Secure Low-Latency Interactive Messaging record; evidence REPORTED.

 [Secure Low-Latency Interactive Messaging](/protocols/slim/) · [source](https://www.techzine.eu/blogs/infrastructure/133408/cisco-donates-agntcy-to-linux-foundation-internet-of-agents-on-its-way/)

- [Read](/category/read/)Observed 2026-07-16 [Alibaba Cloud](https://www.alibabacloud.com) Alibaba Cloud publishes llms.txt for 300+ cloud products across multiple languages at alibabacloud.com/help/*/llms.txt; evidence VERIFIED (writeup cites the live URLs directly).

 [llms.txt](/protocols/llms-txt/) · [source](https://dev.to/xianzhong_li_838f50ae89c4/alibaba-cloud-docs-are-now-fully-available-as-llmstxt-300-cloud-products-one-url-for-every-ai-37g2)

- [Pay](/category/pay/)Recorded 2026-09-06 [Amadeus, Booking.com, Expedia Group, Google, Hilton, Marriott, Trip.com (Lodging)](https://ucp.dev) Listed as an adopter in the Universal Commerce Protocol record; evidence VERIFIED.

 [Universal Commerce Protocol](/protocols/ucp/) · [source](https://ucp.dev)

- [Coordinate](/category/coordinate/)Observed 2026-07-30 [Amazon Web Services (Bedrock AgentCore deployment support)](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/) Listed as an adopter in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/)

- [Present](/category/present/)Observed 2026-05-01 [ANGULARarchitects A2UI/AG-UI integration](https://www.angulararchitects.io/en/blog/integrating-a2ui-with-ag-ui-in-angular/) Angular consultancy ANGULARarchitects built and published a working A2UI + AG-UI + CopilotKit integration for Angular as part of a 10-part series; evidence VERIFIED (author's own first-person technical writeup).

 [A2UI (Agent to UI) Protocol](/protocols/a2ui/) · [source](https://www.angulararchitects.io/en/blog/integrating-a2ui-with-ag-ui-in-angular/)

- [Present](/category/present/)Observed 2026-07-31 [Asana](https://asana.com) Listed among day-one MCP Apps server implementers shipping an interactive UI via an MCP tool server; evidence REPORTED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://www.usecarly.com/blog/mcp-apps/)

- [Permit](/category/permit/)Observed 2026-04-21 [Associated Press](https://www.ap.org) Named among the 1,500+ publishers and organizations endorsing RSL 1.0. evidence REPORTED

 [Really Simple Licensing](/protocols/rsl/) · [source](https://www.linkedin.com/posts/supertab_really-simple-licensing-rsl-10-is-now-activity-7452323067600515074-tRa_)

- [Read](/category/read/)Observed 2026-08-06 [AtScale](https://www.atscale.com) AtScale is a founding contributor implementing the Apache Ossie (OSI) semantic layer spec across its platform; evidence VERIFIED (own blog).

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://www.atscale.com/blog/apache-ossie-open-semantic-standard/)

- [Permit](/category/permit/)Observed 2026-04-07 [Auth0](https://auth0.com) Reported as one of the identity providers shipping RFC 9728 protected-resource-metadata support for production MCP server authorization, evidence REPORTED.

 [OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization)](/protocols/oauth-metadata-for-agents/) · [source](https://agentmarketcap.ai/blog/2026/04/07/mcp-identity-layer-race-auth0-okta-workos-stytch-sso-enterprise)

- [Discover](/category/discover/)Observed 2026-08-24 [AWS (Agent Registry / Bedrock AgentCore)](https://aws.amazon.com/blogs/machine-learning/agentic-resource-discovery-ard-an-open-specification-for-agent-discovery/) AWS's own ML blog describes how AWS Agent Registry integrates with ARD for cross-environment agent discovery. evidence VERIFIED

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://aws.amazon.com/blogs/machine-learning/agentic-resource-discovery-ard-an-open-specification-for-agent-discovery/)

- [Act](/category/act/)Observed 2026-06-17 [AWS (ARTF containers on NVIDIA GPUs)](https://aws.amazon.com/blogs/industries/deploy-agentic-bidding-without-sacrificing-speed-artf-containers-with-nvidia-gpu-acceleration-on-aws/) Published reference infrastructure for deploying ARTF bidding containers with GPU acceleration; evidence VERIFIED (AWS's own blog).

 [Agentic Real Time Framework](/protocols/artf/) · [source](https://aws.amazon.com/blogs/industries/deploy-agentic-bidding-without-sacrificing-speed-artf-containers-with-nvidia-gpu-acceleration-on-aws/)

- [Act](/category/act/)Observed 2026-06-10 [Bytetravel](https://chatgpt.com/apps/bytetravel/asdk_app_69cbfe8a08cc819189985005d12166e1) Shipped to the ChatGPT app directory built on the Apps SDK, per the developer's own forum post; evidence REPORTED.

 [OpenAI Plugins (formerly Apps SDK)](/protocols/openai-apps-sdk-manifests/) · [source](https://community.openai.com/t/what-i-learned-shipping-a-real-chatgpt-app-to-the-app-directory/1383287)

- [Present](/category/present/)Observed 2026-07-31 [Canva](https://www.canva.com) Listed among day-one MCP Apps server implementers shipping an interactive UI via an MCP tool server; evidence REPORTED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://www.usecarly.com/blog/mcp-apps/)

- [Pay](/category/pay/)Observed 2026-03-20 [Circle](https://www.circle.com/blog/a-deep-dive-into-circle-nanopayments-gas-free-usdc-transfers) Circle describes x402 as the emerging standard for agent payments and details gas-free USDC settlement built to support it - evidence VERIFIED

 [x402](/protocols/x402/) · [source](https://www.circle.com/blog/a-deep-dive-into-circle-nanopayments-gas-free-usdc-transfers)

- [Identify](/category/identify/)Observed 2026-07-02 [Cleverbridge](https://www.cleverbridge.com) Cleverbridge is among the first merchants to enable Visa's Trusted Agent Protocol and Agent Directory, testing AI-initiated transactions on its platform; evidence VERIFIED.

 [Visa Trusted Agent Protocol](/protocols/tap/) · [source](https://grow.cleverbridge.com/news/cleverbridge-visa-trusted-agent-protocol)

- [Identify](/category/identify/)Observed 2026-07-01 [Cloudflare (edge verifier and Verified Bots program)](https://developers.cloudflare.com/bots/reference/bot-verification/web-bot-auth/) Listed as an adopter in the Web Bot Auth HTTP Message Signatures record; evidence VERIFIED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://developers.cloudflare.com/bots/reference/bot-verification/web-bot-auth/)

- [Pay](/category/pay/)Observed 2026-04-02 [Coinbase](https://github.com/coinbase/x402) Coinbase created x402 and maintains the reference protocol implementation, SDKs, and example clients/servers - evidence VERIFIED

 [x402](/protocols/x402/) · [source](https://github.com/coinbase/x402)

- [Pay](/category/pay/)Recorded 2026-09-06 [Coinbase (originator)](https://x402.org) Listed as an adopter in the x402 record; evidence REPORTED.

 [x402](/protocols/x402/) · [source](https://x402.org)

- [Coordinate](/category/coordinate/)Observed 2026-06-18 [Comcast Advertising](https://www.comcastadvertising.com) Listed by IAB Tech Lab as an adopter of the AAMP Buyer Agent SDK; evidence REPORTED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://www.linkedin.com/posts/iabtechlab_wpp-media-unveils-prototype-for-new-buyer-activity-7473428850970955777-XCQC)

- [Act](/category/act/)Observed 2026-06-24 [Cursor](https://agentman.ai/blog/agent-skills-ecosystem-report-2026) Listed on the agentskills.io showcase of ~40 products supporting the standard; evidence REPORTED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentman.ai/blog/agent-skills-ecosystem-report-2026)

- [Act](/category/act/)Observed 2026-04-21 [DanAds](https://danads.com/blog/the-agentic-adtech-cheat-sheet-a-humans-guide-to-mcp-adcp-artf-and-more/) Founding Member of AdCP representing self-serve advertising infrastructure, per their own blog; evidence VERIFIED.

 [Ad Context Protocol](/protocols/adcp/) · [source](https://danads.com/blog/the-agentic-adtech-cheat-sheet-a-humans-guide-to-mcp-adcp-artf-and-more/)

- [Read](/category/read/)Observed 2026-08-22 [dbt Labs (MetricFlow)](https://www.getdbt.com) dbt's MetricFlow metrics-authoring format is cited as mapping into Apache Ossie (OSI); evidence REPORTED (third-party engine blog).

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://datus.ai/blog/first-native-apache-ossie-engine/)

- [Discover](/category/discover/)Observed 2026-08-03 [Deutsche Telekom (LMOS)](https://www.infoq.com/presentations/agentic-compute/) Deutsche Telekom's enterprise agentic platform runs on Eclipse LMOS in production, per an InfoQ conference talk by its architect, evidence REPORTED.

 [LMOS (Language Model Operating System)](/protocols/lmos/) · [source](https://www.infoq.com/presentations/agentic-compute/)

- [Pay](/category/pay/)Recorded 2026-09-06 [DoorDash, Google, Square, Toast, Uber Eats (Food)](https://ucp.dev) Listed as an adopter in the Universal Commerce Protocol record; evidence VERIFIED.

 [Universal Commerce Protocol](/protocols/ucp/) · [source](https://ucp.dev)

- [Discover](/category/discover/)Observed 2026-05-18 [DreamHost](https://blakecrosley.com/blog/agents-txt-not-access-control) Third-party post citing DreamHost's own documentation that Web Hosting plans now automatically include a default agents.txt file when a site hasn't provided a custom one. evidence REPORTED

 [agents.txt](/protocols/agents-txt/) · [source](https://blakecrosley.com/blog/agents-txt-not-access-control)

- [Permit](/category/permit/)Observed 2026-06-15 [Elsevier](https://www.elsevier.com) Listed among the strongest TDMRep adopters (W3C adopters register, 30+ STM publishers) reserving text-and-data-mining rights via tdmrep.json. evidence REPORTED

 [Text and Data Mining Reservation Protocol](/protocols/tdmrep/) · [source](https://agentic-readiness.lumar.io/docs/access/tdm-rep)

- [Permit](/category/permit/)Observed 2026-08-17 [Ethereum ERC-8226 authors (Brickken)](https://ethereum-magicians.org/t/erc-8226-regulated-agent-mandate/28208) Brickken team has a live Sepolia testnet deployment of RAMS demonstrating mandate-cap enforcement separate from asset compliance; still draft-stage reference implementation, not production. evidence VERIFIED

 [ERC-8226 Regulated Agent Mandate](/protocols/erc-8226/) · [source](https://ethereum-magicians.org/t/erc-8226-regulated-agent-mandate/28208?page=2)

- [Pay](/category/pay/)Observed 2025-09-29 [Etsy](https://www.etsy.com) First live ACP merchant, selling in-chat via ACP+Stripe inside ChatGPT from Sep 29, 2025, before later moving to a ChatGPT app that routes checkout to its own site - evidence REPORTED

 [Agentic Commerce Protocol](/protocols/agentic-commerce-protocol/) · [source](https://taylorsicard.com/the-index/ai-checkout-tracker-2026)

- [Pay](/category/pay/)Recorded 2026-09-06 [FIDO Alliance (specification steward)](https://raw.githubusercontent.com/google-agentic-commerce/AP2/main/CONTRIBUTING.md) Listed as an adopter in the Agent Payments Protocol record; evidence VERIFIED.

 [Agent Payments Protocol](/protocols/ap2/) · [source](https://raw.githubusercontent.com/google-agentic-commerce/AP2/main/CONTRIBUTING.md)

- [Present](/category/present/)Observed 2026-07-31 [Figma](https://www.figma.com) Listed among day-one MCP Apps server implementers shipping an interactive UI via an MCP tool server; evidence REPORTED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://www.usecarly.com/blog/mcp-apps/)

- [Pay](/category/pay/)Recorded 2026-09-06 [Food Tech Council seat-holders (Google, Square, Toast, DoorDash, Uber Eats)](https://raw.githubusercontent.com/Universal-Commerce-Protocol/.github/main/MAINTAINERS.md) Listed as an adopter in the Universal Commerce Protocol record; evidence VERIFIED.

 [Universal Commerce Protocol](/protocols/ucp/) · [source](https://raw.githubusercontent.com/Universal-Commerce-Protocol/.github/main/MAINTAINERS.md)

- [Act](/category/act/)Observed 2026-07-03 [Gemini CLI (Google)](https://dreaming.press/posts/agent-client-protocol-acp-vs-mcp.html) Cited as ACP's reference agent-side implementation; evidence REPORTED.

 [Agent Client Protocol](/protocols/agent-client-protocol/) · [source](https://dreaming.press/posts/agent-client-protocol-acp-vs-mcp.html)

- [Act](/category/act/)Observed 2026-07-15 [GitHub Copilot](https://atlan.com/know/ai-agent/ai-agent-skills/what-are-agent-skills/) Listed as an Agent Skills-supporting platform on the ~40-product agentskills.io showcase; evidence REPORTED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://atlan.com/know/ai-agent/ai-agent-skills/what-are-agent-skills/)

- [Identify](/category/identify/)Observed 2026-05-14 [GoDaddy / Infoblox joint standards-support announcement](https://aboutus.godaddy.net/newsroom/news-releases/press-release-details/2026/Infoblox-and-GoDaddy-Support-Open-Standards-for-AI-Agent-Discovery-Identity-and-Verification-2026-0acKMntvOC/default.aspx) Listed as an adopter in the Agent Name Service v2 (ANS) record; evidence REPORTED.

 [Agent Name Service v2 (ANS)](/protocols/ans/) · [source](https://aboutus.godaddy.net/newsroom/news-releases/press-release-details/2026/Infoblox-and-GoDaddy-Support-Open-Standards-for-AI-Agent-Discovery-Identity-and-Verification-2026-0acKMntvOC/default.aspx)

- [Discover](/category/discover/)Observed 2026-07-02 [Google (ai-catalog.json launch)](https://cloudandsre.com/blog/agentic-resource-discovery-ard/) Co-published the ARD/ai-catalog.json specification with Microsoft and Hugging Face, evidence REPORTED (spec launch coverage; our probe found the spec's own domain serves no manifest).

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://cloudandsre.com/blog/agentic-resource-discovery-ard/)

- [Account](/category/account/)Observed 2026-03-05 [Google (co-developer, AP2/UCP alignment)](https://www.mastercard.com/global/en/news-and-trends/stories/2026/verifiable-intent.html) Listed as an adopter in the Verifiable Intent record; evidence VERIFIED.

 [Verifiable Intent](/protocols/vi/) · [source](https://www.mastercard.com/global/en/news-and-trends/stories/2026/verifiable-intent.html)

- [Act](/category/act/)Observed 2026-07-22 [Google (Gemini CLI)](https://juliamaehler.com/blog/claude-agent-skills-guide-2026) Gemini CLI listed among platforms reading the same SKILL.md folder structure; evidence REPORTED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://juliamaehler.com/blog/claude-agent-skills-guide-2026)

- [Act](/category/act/)Recorded 2026-09-06 [Google DeepMind](https://en.wikipedia.org/wiki/Model_Context_Protocol) Listed as an adopter in the Model Context Protocol record; evidence REPORTED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://en.wikipedia.org/wiki/Model_Context_Protocol)

- [Pay](/category/pay/)Recorded 2026-09-06 [Google, Shopify, Etsy, Wayfair, Target, Walmart, Amazon, Microsoft, Meta, Salesforce, Stripe (Shopping)](https://ucp.dev) Listed as an adopter in the Universal Commerce Protocol record; evidence VERIFIED.

 [Universal Commerce Protocol](/protocols/ucp/) · [source](https://ucp.dev)

- [Identify](/category/identify/)Observed 2026-07-17 [HSBC UK](https://www.hsbc.co.uk) HSBC UK and Visa completed a live AI agent payment on a real merchant site, using TAP to distinguish the legitimate agent from bot traffic; evidence REPORTED.

 [Visa Trusted Agent Protocol](/protocols/tap/) · [source](https://stellagent.ai/insights/hsbc-visa-live-agentic-payment-uk)

- [Discover](/category/discover/)Observed 2026-06-17 [Hugging Face](https://huggingface.co/blog/agentic-resource-discovery-launch) Co-launched ARD alongside Google and Microsoft and publishes its own catalog; the only one of the 11 launch backers our own probe found serving at root, evidence VERIFIED.

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://huggingface.co/blog/agentic-resource-discovery-launch)

- [Coordinate](/category/coordinate/)Observed 2026-07-30 [HyperMindZ (Deals Sync MCP Server contribution)](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/) Listed as an adopter in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/)

- [Act](/category/act/)Observed 2026-08-12 [IAB Tech Lab claim: 'used in production by a number of companies' (unnamed)](https://iabtechlab.com/a-milestone-for-the-agentic-advertising-ecosystem/) Listed as an adopter in the Agentic Real Time Framework record; evidence REPORTED.

 [Agentic Real Time Framework](/protocols/artf/) · [source](https://iabtechlab.com/a-milestone-for-the-agentic-advertising-ecosystem/)

- [Act](/category/act/)Observed 2025-11-13 [Index Exchange (design/implementation quote)](https://iabtechlab.com/press-releases/iab-tech-lab-announces-agentic-rtb-framework-artf-v1-0-for-public-comment/) Listed as an adopter in the Agentic Real Time Framework record; evidence REPORTED.

 [Agentic Real Time Framework](/protocols/artf/) · [source](https://iabtechlab.com/press-releases/iab-tech-lab-announces-agentic-rtb-framework-artf-v1-0-for-public-comment/)

- [Discover](/category/discover/)Observed 2026-05-14 [Infoblox / GoDaddy joint support announcement](https://aboutus.godaddy.net/newsroom/news-releases/press-release-details/2026/Infoblox-and-GoDaddy-Support-Open-Standards-for-AI-Agent-Discovery-Identity-and-Verification-2026-0acKMntvOC/default.aspx) Listed as an adopter in the DNS for AI Discovery record; evidence REPORTED.

 [DNS for AI Discovery](/protocols/dns-aid/) · [source](https://aboutus.godaddy.net/newsroom/news-releases/press-release-details/2026/Infoblox-and-GoDaddy-Support-Open-Standards-for-AI-Agent-Discovery-Identity-and-Verification-2026-0acKMntvOC/default.aspx)

- [Act](/category/act/)Observed 2026-06-04 [JetBrains IDEs](https://www.danilchenko.dev/posts/agent-client-protocol/) Native ACP support since December 2025 and co-launched the ACP Registry with Zed in January 2026; evidence REPORTED.

 [Agent Client Protocol](/protocols/agent-client-protocol/) · [source](https://www.danilchenko.dev/posts/agent-client-protocol/)

- [Coordinate](/category/coordinate/)Observed 2026-03-24 [Kochava (StationOne)](https://www.kochava.com) Put IAB Tech Lab's AAMP into open beta via its StationOne agentic ad nodes, the first platform to host a working AAMP workspace; evidence REPORTED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://ppc.land/kochava-puts-iab-tech-labs-aamp-into-open-beta-for-agentic-ad-buying/)

- [Read](/category/read/)Observed 2026-08-12 [Kyvos](https://www.kyvosinsights.com) Kyvos joined the Apache Ossie (OSI) ecosystem to standardize business semantics for enterprise AI across its platform; evidence VERIFIED (press release quotes Kyvos).

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://www.newswire.ca/news-releases/kyvos-joins-apache-ossie-ecosystem-bringing-speed-and-context-to-enterprise-ai-890870146.html)

- [Act](/category/act/)Observed 2026-03-24 [LangChain (LangGraph Platform)](https://github.com/langchain-ai/agent-protocol) LangGraph Platform is described as implementing a superset of the (AI Engineer Foundation) Agent Protocol spec; evidence REPORTED (from a fork mirroring the upstream README).

 [Agent Protocol](/protocols/agent-protocol-aief/) · [source](https://github.com/endlessc/agent-protocol)

- [Pay](/category/pay/)Recorded 2026-09-06 [Lightning Labs (steward)](https://raw.githubusercontent.com/lightninglabs/L402/master/README.md) Listed as an adopter in the L402 record; evidence VERIFIED.

 [L402](/protocols/l402/) · [source](https://raw.githubusercontent.com/lightninglabs/L402/master/README.md)

- [Permit](/category/permit/)Observed 2026-08-26 [Medium](https://medium.com) Named as one of the platforms backing RSL, evidence REPORTED.

 [Really Simple Licensing](/protocols/rsl/) · [source](https://www.lilachbullock.com/rsl-licensing-ai-content-small-business/)

- [Pay](/category/pay/)Recorded 2026-09-06 [Meta (Lead Maintainer)](https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/blob/main/MAINTAINERS.md) Listed as an adopter in the Agentic Commerce Protocol record; evidence VERIFIED.

 [Agentic Commerce Protocol](/protocols/agentic-commerce-protocol/) · [source](https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/blob/main/MAINTAINERS.md)

- [Coordinate](/category/coordinate/)Observed 2026-05-20 [Microsoft (Azure AI Foundry / Copilot Studio)](https://azure.microsoft.com/en-us/products/ai-foundry) Runs A2A support in Azure AI Foundry and Copilot Studio, cited among 150+ organisations running A2A in production; evidence REPORTED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://www.ailoitte.com/blog/google-a2a-protocol-enterprise/)

- [Act](/category/act/)Recorded 2026-09-06 [Microsoft (Semantic Kernel, Azure OpenAI integration)](https://en.wikipedia.org/wiki/Model_Context_Protocol) Listed as an adopter in the Model Context Protocol record; evidence REPORTED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://en.wikipedia.org/wiki/Model_Context_Protocol)

- [Act](/category/act/)Observed 2026-07-10 [Microsoft Edge](https://byteiota.com/webmcp-chrome-149-origin-trial/) Reported to ship native WebMCP support in Edge 147 (other sources describe Edge's support as flag-gated/origin-trial only, so treat as disputed); evidence REPORTED.

 [WebMCP](/protocols/webmcp/) · [source](https://byteiota.com/webmcp-chrome-149-origin-trial/)

- [Coordinate](/category/coordinate/)Observed 2026-07-30 [Mixpeek (Content Taxonomy Parser contribution)](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/) Listed as an adopter in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/)

- [Discover](/category/discover/)Observed 2026-08-29 [Mnemom](https://www.mnemom.ai/agents.txt) Serves a live /agents.txt as its agent guide, referenced from its public agent-readability commitment page. evidence VERIFIED

 [agents.txt](/protocols/agents-txt/) · [source](https://www.mnemom.ai/for-agents/)

- [Read](/category/read/)Observed 2026-06-05 [n8n](https://docs.n8n.io) n8n serves llms.txt at docs.n8n.io/llms.txt; evidence REPORTED (third-party SaaS llms.txt adoption survey).

 [llms.txt](/protocols/llms-txt/) · [source](https://automatelab.tech/blog/ai-agents/llms-txt-across-top-1-000-saas-sites-may-2026-who-ships-what/)

- [Permit](/category/permit/)Observed 2026-08-26 [O'Reilly Media](https://www.oreilly.com) Named as an RSL-backing publisher, evidence REPORTED.

 [Really Simple Licensing](/protocols/rsl/) · [source](https://www.lilachbullock.com/rsl-licensing-ai-content-small-business/)

- [Permit](/category/permit/)Observed 2026-04-07 [Okta](https://okta.com) Reported shipping MCP OAuth 2.1 / RFC 9728 support for enterprise MCP deployments, evidence REPORTED.

 [OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization)](/protocols/oauth-metadata-for-agents/) · [source](https://agentmarketcap.ai/blog/2026/04/07/mcp-identity-layer-race-auth0-okta-workos-stytch-sso-enterprise)

- [Act](/category/act/)Observed 2026-07-11 [OpenAI (ChatGPT + Codex CLI)](https://devtoollab.com/blog/agent-skills-open-standard-guide) Wired SKILL.md support into ChatGPT and Codex CLI within 48 hours of Anthropic's December 2025 publication; evidence REPORTED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://devtoollab.com/blog/agent-skills-open-standard-guide)

- [Act](/category/act/)Recorded 2026-09-06 [OpenAI (ChatGPT desktop app, then ChatGPT apps)](https://en.wikipedia.org/wiki/Model_Context_Protocol) Listed as an adopter in the Model Context Protocol record; evidence VERIFIED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://en.wikipedia.org/wiki/Model_Context_Protocol)

- [Pay](/category/pay/)Recorded 2026-09-06 [OpenAI (Founding Maintainer)](https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/blob/main/MAINTAINERS.md) Listed as an adopter in the Agentic Commerce Protocol record; evidence VERIFIED.

 [Agentic Commerce Protocol](/protocols/agentic-commerce-protocol/) · [source](https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/blob/main/MAINTAINERS.md)

- [Act](/category/act/)Recorded 2026-09-06 [openai-apps-sdk-examples (Pizzaz component gallery)](https://developers.openai.com/plugins/build/chatgpt-ui) Listed as an adopter in the OpenAI Plugins (formerly Apps SDK) record; evidence REPORTED.

 [OpenAI Plugins (formerly Apps SDK)](/protocols/openai-apps-sdk-manifests/) · [source](https://developers.openai.com/plugins/build/chatgpt-ui)

- [Read](/category/read/)Observed 2026-08-21 [OpenKnowledge](https://openknowledge.ai) OpenKnowledge ships an OKF plugin for its LLM-wiki app that applies linting rules, skills, and automations to keep wikis OKF-conformant; evidence VERIFIED (own blog).

 [Open Knowledge Format](/protocols/okf/) · [source](https://openknowledge.ai/blog/open-knowledge-format-okf-plugin-linter)

- [Present](/category/present/)Observed 2026-03-12 [Oracle Open Agent Spec](https://www.copilotkit.ai/blog/reusable-agents-meet-generative-uis) CopilotKit blog states Oracle, Google, and CopilotKit jointly shipped 'transportless A2UI' with Oracle's Open Agent Spec as the first adopter; evidence REPORTED (third-party/co-author blog, no direct Oracle-published page seen in this sweep).

 [A2UI (Agent to UI) Protocol](/protocols/a2ui/) · [source](https://www.copilotkit.ai/blog/reusable-agents-meet-generative-uis)

- [Identify](/category/identify/)Observed 2026-07-20 [Palo Alto Networks (Idira Secrets Manager)](https://www.paloaltonetworks.com) Idira Secrets Manager's Secure Workload Access issues cryptographically verifiable, ephemeral SPIFFE identities to autonomous AI agents; evidence VERIFIED (vendor's own blog).

 [SPIFFE (Secure Production Identity Framework for Everyone)](/protocols/spiffe/) · [source](https://www.paloaltonetworks.com/blog/identity-security/ai-agent-security-spiffe-machine-identity/)

- [Pay](/category/pay/)Observed 2026-08-21 [PayPal](https://www.paypal.com) PayPal co-launched AP2 with Google Cloud as a named payment-service-provider partner among 120+ organizations - evidence REPORTED (third-party outlet summarizing the announcement, not the primary press release)

 [Agent Payments Protocol](/protocols/ap2/), [Agentic Commerce Protocol](/protocols/agentic-commerce-protocol/) · [source](https://www.gate.com/news/detail/google-cloud-and-paypal-launch-ap2-protocol-with-120-partners-execs-say-ai-20996834)

- [Coordinate](/category/coordinate/)Observed 2026-04-07 [PMG (Alli)](https://www.pmg.com) Integrated IAB Tech Lab AAMP standards into its Alli proprietary operating system for agentic buying; evidence REPORTED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://www.prnewswire.com/news-releases/pmg-integrates-iab-tech-lab-aamp-standards-into-alli-operating-system-302734906.html)

- [Coordinate](/category/coordinate/)Observed 2026-03-30 [PubMatic MCP Server (AAMP Seller Agent integration)](https://pubmatic.com) IAB Tech Lab's AAMP Seller Agent integrates with the PubMatic MCP Server so it can communicate with PubMatic; evidence REPORTED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://iabtechlab.com/aamp-two-months-in-progress-report/)

- [Permit](/category/permit/)Observed 2026-07-23 [Quora](https://www.quora.com) Named among platforms endorsing RSL to specify AI compensation terms, evidence REPORTED.

 [Really Simple Licensing](/protocols/rsl/) · [source](https://xix.ai/ainews/web-system-ai-companies-pay.html)

- [Permit](/category/permit/)Observed 2026-07-12 [Reddit](https://www.reddit.com) Cited as one of roughly 1,500 publishers behind RSL 1.0 (shipped December 2025), alongside Yahoo, Quora, O'Reilly, Medium and Vox. evidence REPORTED

 [Really Simple Licensing](/protocols/rsl/) · [source](https://dev.to/fernforge/blocking-ai-crawlers-earns-you-nothing-heres-how-to-price-them-instead-1j6k)

- [Permit](/category/permit/)Observed 2025-12-10 [RSL Collective editorial roster: Condé Nast, Ziff Davis, Yahoo, Automattic, O'Reilly Media, Fastly, Schema.org](https://rslstandard.org/rsl) Listed as an adopter in the Really Simple Licensing record; evidence VERIFIED.

 [Really Simple Licensing](/protocols/rsl/) · [source](https://rslstandard.org/rsl)

- [Coordinate](/category/coordinate/)Observed 2026-07-30 [SafeGuard Privacy (Diligence Platform integration)](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/) Listed as an adopter in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://iabtechlab.com/press-releases/iab-tech-lab-releases-aamp-2-3-bringing-enterprise-grade-infrastructure-and-privacy-diligence-to-agentic-advertising/)

- [Present](/category/present/)Observed 2026-07-31 [Salesforce](https://www.salesforce.com) Listed among day-one MCP Apps server implementers (Jan 26, 2026 launch) shipping an interactive UI via an MCP tool server; evidence REPORTED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://www.usecarly.com/blog/mcp-apps/)

- [Coordinate](/category/coordinate/)Observed 2026-05-20 [Salesforce (Agentforce)](https://www.salesforce.com/agentforce/) Agentforce is listed among enterprises running A2A in production alongside Microsoft, AWS, SAP and ServiceNow; evidence REPORTED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://www.ailoitte.com/blog/google-a2a-protocol-enterprise/)

- [Coordinate](/category/coordinate/)Observed 2026-04-24 [SAP](https://www.sap.com) Named as running A2A in production at Google Cloud Next 2026 alongside Microsoft, AWS, Salesforce, ServiceNow; evidence REPORTED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://www.cloudmagazin.com/en/2026/04/25/a2a-protocol-1-2-in-production-what-dach-cloud-architects-need-to-change-in-their-istio-setup-now/)

- [Act](/category/act/)Observed 2026-03-20 [Scout24 / ImmoScout24](https://medium.com/scout24-engineering/what-we-learned-from-launching-immoscout24-app-in-chatgpt-efbed0f7375b) Built a real-estate search app for ChatGPT using MCP and the OpenAI Apps SDK, shipped and written up by their own engineering team; evidence VERIFIED.

 [OpenAI Plugins (formerly Apps SDK)](/protocols/openai-apps-sdk-manifests/) · [source](https://medium.com/scout24-engineering/what-we-learned-from-launching-immoscout24-app-in-chatgpt-efbed0f7375b)

- [Coordinate](/category/coordinate/)Observed 2026-04-24 [ServiceNow](https://www.servicenow.com) Named as one of the organisations running A2A 1.2 in production at Google Cloud Next 2026; evidence REPORTED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://www.cloudmagazin.com/en/2026/04/25/a2a-protocol-1-2-in-production-what-dach-cloud-architects-need-to-change-in-their-istio-setup-now/)

- [Discover](/category/discover/)Observed 2026-09-06 [ServiceNow](https://outshift.cisco.com/blog/ai-ml/service-now-outshift-multi-agent-enterprise) Cisco Outshift blog on ServiceNow's use of AGNTCY (Directory/Identity) for multi-agent enterprise workflows. evidence REPORTED

 [Agent Directory Service](/protocols/ads/) · [source](https://outshift.cisco.com/blog/ai-ml/service-now-outshift-multi-agent-enterprise)

- [Act](/category/act/)Observed 2026-03-09 [Shopify (Agentic Storefronts on NLWeb)](https://salespeak.ai/blog/nlweb-mcp-endpoint-out-of-the-box/) Launched "Agentic Storefronts" selling products through NLWeb-powered AI conversations; evidence REPORTED.

 [NLWeb](/protocols/nlweb/) · [source](https://salespeak.ai/blog/nlweb-mcp-endpoint-out-of-the-box/)

- [Act](/category/act/)Observed 2026-06-12 [Shopify (WebMCP experimentation)](https://www.developersdigest.tech/blog/webmcp-google-browser-agent-standard-2026) Named among sites experimenting with WebMCP alongside Expedia, Booking.com, Credit Karma and Target; evidence THIN (listing only).

 [WebMCP](/protocols/webmcp/) · [source](https://www.developersdigest.tech/blog/webmcp-google-browser-agent-standard-2026)

- [Pay](/category/pay/)Recorded 2026-09-06 [Shopping Tech Council seat-holders (Google, Shopify, Etsy, Meta, Amazon, Microsoft, Target, Stripe, Salesforce, Wayfair)](https://raw.githubusercontent.com/Universal-Commerce-Protocol/.github/main/MAINTAINERS.md) Listed as an adopter in the Universal Commerce Protocol record; evidence VERIFIED.

 [Universal Commerce Protocol](/protocols/ucp/) · [source](https://raw.githubusercontent.com/Universal-Commerce-Protocol/.github/main/MAINTAINERS.md)

- [Present](/category/present/)Observed 2026-07-31 [Slack](https://slack.com) Listed among day-one MCP Apps server implementers shipping an interactive UI via an MCP tool server; evidence REPORTED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://www.usecarly.com/blog/mcp-apps/)

- [Permit](/category/permit/)Observed 2026-09-04 [SleekNova](https://sleeknova.com/tdm-policy/) Publishes a TDM policy page reserving text-and-data-mining rights via TDMRep-compliant machine-readable means, evidence VERIFIED (own policy page).

 [Text and Data Mining Reservation Protocol](/protocols/tdmrep/) · [source](https://sleeknova.com/tdm-policy/)

- [Read](/category/read/)Observed 2025-09-23 [Snowflake, Salesforce, dbt Labs, BlackRock, RelationalAI (co-leading partners)](https://www.snowflake.com/en/news/press-releases/snowflake-salesforce-dbt-labs-and-more-revolutionize-data-readiness-for-ai-with-open-semantic-interchange-initiative/) Listed as an adopter in the Apache Ossie (formerly Open Semantic Interchange) record; evidence VERIFIED.

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://www.snowflake.com/en/news/press-releases/snowflake-salesforce-dbt-labs-and-more-revolutionize-data-readiness-for-ai-with-open-semantic-interchange-initiative/)

- [Permit](/category/permit/)Observed 2026-06-16 [Spawning](https://spawning.ai) Spawning popularized the deployed root-file ai.txt pattern for AI training/data-mining consent; adoption and crawler obedience remain thin. evidence THIN

 [ai.txt](/protocols/ai-txt/) · [source](https://github.com/ItamarZand88/awesome-agent-conventions/tree/main/conventions/ai-txt)

- [Permit](/category/permit/)Observed 2026-06-15 [Springer Nature](https://www.springernature.com) Named STM publisher adopter of TDMRep per the W3C adopters register and Lumar's readiness scoring. evidence REPORTED

 [Text and Data Mining Reservation Protocol](/protocols/tdmrep/) · [source](https://agentic-readiness.lumar.io/docs/access/tdm-rep)

- [Act](/category/act/)Observed 2026-06-03 [Stars In Hands Gift Studio](https://karangoyal.cc/blog/openai-approved-chatgpt-app-custom-gifts) OpenAI-approved ChatGPT app for custom gifts, built with the Apps SDK by its own developer; evidence VERIFIED.

 [OpenAI Plugins (formerly Apps SDK)](/protocols/openai-apps-sdk-manifests/) · [source](https://karangoyal.cc/blog/openai-approved-chatgpt-app-custom-gifts)

- [Pay](/category/pay/)Recorded 2026-09-07 [Stripe](https://docs.stripe.com/payments/machine/x402) Stripe's Machine Payments product accepts both stablecoin payments over x402 (USDC on Base) and native MPP settlement (Tempo, Solana), per Stripe's own docs - evidence VERIFIED

 [x402](/protocols/x402/), [Machine Payments Protocol](/protocols/mpp/) · [source](https://docs.stripe.com/payments/machine/x402)

- [Pay](/category/pay/)Recorded 2026-09-06 [Stripe (co-author)](https://mpp.dev/governance) Listed as an adopter in the Machine Payments Protocol record; evidence VERIFIED.

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://mpp.dev/governance)

- [Pay](/category/pay/)Recorded 2026-09-06 [Stripe (Founding Maintainer)](https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/blob/main/MAINTAINERS.md) Listed as an adopter in the Agentic Commerce Protocol record; evidence VERIFIED.

 [Agentic Commerce Protocol](/protocols/agentic-commerce-protocol/) · [source](https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/blob/main/MAINTAINERS.md)

- [Permit](/category/permit/)Observed 2026-04-07 [Stytch](https://stytch.com) Reported shipping MCP OAuth 2.1 / RFC 9728 support for enterprise MCP deployments, evidence REPORTED.

 [OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization)](/protocols/oauth-metadata-for-agents/) · [source](https://agentmarketcap.ai/blog/2026/04/07/mcp-identity-layer-race-auth0-okta-workos-stytch-sso-enterprise)

- [Discover](/category/discover/)Observed 2026-04-15 [Supabase](https://github.com/supabase/supabase/pull/44880) Merged PR adding a /.well-known/api-catalog file to Supabase's own docs/website for agent discovery. evidence VERIFIED

 [api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs](/protocols/api-catalog-rfc9727/) · [source](https://github.com/supabase/supabase/pull/44880)

- [Pay](/category/pay/)Observed 2026-09-06 [SwarmSync](https://benstone-ai.com/work/swarmsync) SwarmSync's agent-commerce trust infrastructure uses AP2-oriented escrow and verified-delivery patterns from the VCAP protocol family its own team authors - evidence THIN (single-author portfolio page, same team that wrote the VCAP draft)

 [VCAP: Verified Commerce for Agent Protocols](/protocols/vcap/) · [source](https://benstone-ai.com/work/swarmsync)

- [Coordinate](/category/coordinate/)Observed 2026-07-30 [Swisscom](https://www.linkedin.com/posts/vijoy_happy-1st-birthday-agntcy-a-year-ago-this-activity-7488620714682408962-LJBs) Cisco Outshift SVP states Swisscom built multi-agent systems on AGNTCY (whose messaging layer is SLIM) to catch production outages via a digital twin, 100x faster than physical lab testing; evidence REPORTED (vendor testimonial, no independent Swisscom-side confirmation seen).

 [Secure Low-Latency Interactive Messaging](/protocols/slim/) · [source](https://www.linkedin.com/posts/vijoy_happy-1st-birthday-agntcy-a-year-ago-this-activity-7488620714682408962-LJBs)

- [Act](/category/act/)Observed 2026-04-12 [Taskade](https://www.taskade.com/blog/hosted-mcp-server) Shipped a hosted MCP v2 server exposing 50+ auto-generated tools; evidence VERIFIED (their own engineering blog).

 [Model Context Protocol](/protocols/mcp/) · [source](https://www.taskade.com/blog/hosted-mcp-server)

- [Pay](/category/pay/)Recorded 2026-09-06 [Tempo (co-author)](https://mpp.dev/governance) Listed as an adopter in the Machine Payments Protocol record; evidence VERIFIED.

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://mpp.dev/governance)

- [Permit](/category/permit/)Observed 2026-04-21 [The Guardian](https://www.theguardian.com) Named among 1,500+ publishers and organizations endorsing RSL 1.0 as an official industry standard. evidence REPORTED

 [Really Simple Licensing](/protocols/rsl/) · [source](https://www.linkedin.com/posts/supertab_really-simple-licensing-rsl-10-is-now-activity-7452323067600515074-tRa_)

- [Act](/category/act/)Observed 2025-11-13 [The Trade Desk (design/implementation quote)](https://iabtechlab.com/press-releases/iab-tech-lab-announces-agentic-rtb-framework-artf-v1-0-for-public-comment/) Listed as an adopter in the Agentic Real Time Framework record; evidence REPORTED.

 [Agentic Real Time Framework](/protocols/artf/) · [source](https://iabtechlab.com/press-releases/iab-tech-lab-announces-agentic-rtb-framework-artf-v1-0-for-public-comment/)

- [Coordinate](/category/coordinate/)Observed 2026-06-18 [The Walt Disney Company](https://thewaltdisneycompany.com) Listed by IAB Tech Lab as an adopter of the AAMP Buyer Agent SDK; evidence REPORTED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://www.linkedin.com/posts/iabtechlab_wpp-media-unveils-prototype-for-new-buyer-activity-7473428850970955777-XCQC)

- [Act](/category/act/)Observed 2026-05-29 [TripAdvisor](https://www.techradar.com/pro/could-microsoft-kill-the-web-browser-at-build-everything-developers-need-to-know-about-the-nlweb-protocol) Named as an NLWeb early adopter serving structured catalog content to agents; evidence REPORTED.

 [NLWeb](/protocols/nlweb/) · [source](https://www.techradar.com/pro/could-microsoft-kill-the-web-browser-at-build-everything-developers-need-to-know-about-the-nlweb-protocol)

- [Pay](/category/pay/)Observed 2026-03-18 [Visa (mpp-card SDK)](https://www.npmjs.com/package/mpp-card) Visa publishes mpp-card, a TypeScript client/server SDK implementing the Machine Payments Protocol's card payment method - evidence VERIFIED

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://www.npmjs.com/package/mpp-card)

- [Identify](/category/identify/)Observed 2025-10-14 [Visa Trusted Agent Protocol launch announcement](https://investor.visa.com/news/news-details/2025/Visa-Introduces-Trusted-Agent-Protocol-An-Ecosystem-Led-Framework-for-AI-Commerce/default.aspx) Listed as an adopter in the Visa Trusted Agent Protocol record; evidence VERIFIED.

 [Visa Trusted Agent Protocol](/protocols/tap/) · [source](https://investor.visa.com/news/news-details/2025/Visa-Introduces-Trusted-Agent-Protocol-An-Ecosystem-Led-Framework-for-AI-Commerce/default.aspx)

- [Discover](/category/discover/)Observed 2026-03-10 [Webex (Cisco)](https://outshift.cisco.com/blog/ai-ml/webex-integrates-agntcy-directory-and-identity) Cisco's own blog: Webex integrates AGNTCY Directory and Identity for trusted onboarding, discovery and verification of agentic apps. evidence VERIFIED

 [Agent Directory Service](/protocols/ads/) · [source](https://outshift.cisco.com/blog/ai-ml/webex-integrates-agntcy-directory-and-identity)

- [Coordinate](/category/coordinate/)Observed 2026-06-18 [WPP Media](https://www.wppmedia.com) Adopted the AAMP Buyer Agent SDK as part of its Buyer Agent, per IAB Tech Lab announcement; evidence REPORTED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://www.linkedin.com/posts/iabtechlab_wpp-media-unveils-prototype-for-new-buyer-activity-7473428850970955777-XCQC)

- [Pay](/category/pay/)Observed 2026-07-14 [x402 Foundation (Linux Foundation, LF Projects LLC)](https://x402.org/announcement) Listed as an adopter in the x402 record; evidence VERIFIED.

 [x402](/protocols/x402/) · [source](https://x402.org/announcement)

- [Act](/category/act/)Observed 2026-07-05 [Yahoo](https://rtblint.org/blog/aamp-adcp-openrtb-2026/) Founding member of AdCP at its October 2025 launch; evidence REPORTED.

 [Ad Context Protocol](/protocols/adcp/) · [source](https://rtblint.org/blog/aamp-adcp-openrtb-2026/)

- [Permit](/category/permit/)Observed 2026-04-02 [Yahoo](https://www.yahoo.com) Named as an RSL-backing publisher, evidence REPORTED.

 [Really Simple Licensing](/protocols/rsl/) · [source](https://wan-ifra.org/2026/04/rsls-ai-use-compensation-plan-for-news-we-think-this-is-a-100-billion-opportunity-for-publishers/)

- [Act](/category/act/)Observed 2026-04-01 [Zed](https://zed.dev/docs/ai/external-agents) ACP's creator and reference editor with native agent-panel support for external ACP agents; evidence REPORTED.

 [Agent Client Protocol](/protocols/agent-client-protocol/) · [source](https://github.com/roelfdiedericks/acp-go)

## Networks 15

- [Identify](/category/identify/)Observed 2026-07-14 [0G](https://0g.ai) 0G merged ERC-8004's IdentityRegistry and ReputationRegistry contracts live on 0G mainnet/testnet, integrating them with its own Agentic ID system; evidence VERIFIED.

 [ERC-8004: Trustless Agents](/protocols/erc-8004/) · [source](https://0g.ai/blog/0g-supports-erc-8004)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [agent-network-protocol/AgentNetworkProtocol (specification repository)](https://github.com/agent-network-protocol/AgentNetworkProtocol) Listed as an implementation in the Agent Network Protocol record; evidence VERIFIED.

 [Agent Network Protocol](/protocols/anp/) · [source](https://github.com/agent-network-protocol/AgentNetworkProtocol)

- [Act](/category/act/)Observed 2026-07-13 [AgenticAdvertising.org](https://agenticadvertising.org/perspectives/adcp-31-is-ga-from-mcp-access-to-production-grade-agentic-advertising-mrj9ld7d) Governing body of AdCP; published the AdCP 3.1 GA announcement grown to 100+ member companies; evidence VERIFIED (their own site).

 [Ad Context Protocol](/protocols/adcp/) · [source](https://agenticadvertising.org/perspectives/adcp-31-is-ga-from-mcp-access-to-production-grade-agentic-advertising-mrj9ld7d)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [agora-protocol/paper-demo (original paper demo, 100-agent network)](https://github.com/agora-protocol/paper-demo) Listed as an implementation in the Agora Protocol record; evidence VERIFIED.

 [Agora Protocol](/protocols/agora-protocol/) · [source](https://github.com/agora-protocol/paper-demo)

- [Identify](/category/identify/)Observed 2026-08-13 [BNB Chain](https://www.bnbchain.org) BNB Chain launched an on-chain agent framework based on ERC-8004 for decentralized identity, peer-to-peer payments, delegation via ERC-8183, and reputation surfaced through 8004scan; evidence REPORTED.

 [ERC-8004: Trustless Agents](/protocols/erc-8004/) · [source](https://www.gate.com/news/detail/bnb-chain-launches-erc-8004-ai-agent-identity-and-payment-framework-21089737)

- [Pay](/category/pay/)Observed 2026-03-17 [BNB Chain (BNBAgent SDK)](https://www.bnbchain.org/en/blog/bnbagent-sdk-the-first-live-erc-8183-implementation-for-onchain-ai-agents) BNB Chain's BNBAgent SDK is described as the first live ERC-8183 implementation, combining ERC-8004 identity, escrow, and arbitration, live on BNB Chain testnet with mainnet planned - evidence VERIFIED

 [ERC-8183: Agentic Commerce](/protocols/erc-8183/) · [source](https://www.bnbchain.org/en/blog/bnbagent-sdk-the-first-live-erc-8183-implementation-for-onchain-ai-agents)

- [Permit](/category/permit/)Observed 2026-05-28 [Cloudflare, Firecrawl, Resend, Monday.com](https://bmdpat.com/blog/auth-md-agent-user-registration-2026) Third-party writeup reports these four companies have already shipped auth.md-based agent self-registration. evidence REPORTED

 [auth.md](/protocols/auth-md/) · [source](https://bmdpat.com/blog/auth-md-agent-user-registration-2026)

- [Discover](/category/discover/)Observed 2026-07-07 [Databricks / GitHub / Salesforce / ServiceNow / Snowflake / Cisco / Nvidia (ARD launch backers)](https://qail.ai/agentic-resource-discovery-ai-catalog-json/) Named as launch backers of the Agentic Resource Discovery spec alongside Google; our own probe found none of these serving a manifest at root, evidence THIN (backer list only, not confirmed live deployment).

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://qail.ai/agentic-resource-discovery-ai-catalog-json/)

- [Account](/category/account/)Observed 2026-04-28 [FIDO Alliance](https://fidoalliance.org) Standards body announced Mastercard contributed its Verifiable Intent framework (co-developed with Google) into its new Agentic Authentication Working Group for further development into an interoperable standard; evidence VERIFIED.

 [Verifiable Intent](/protocols/vi/) · [source](https://fidoalliance.org/fido-alliance-to-develop-standards-for-trusted-ai-agent-interactions/)

- [Permit](/category/permit/)Observed 2026-04-21 [IAB Tech Lab](https://iabtechlab.com) Named endorsing organization behind RSL 1.0 becoming an official industry standard. evidence REPORTED

 [Really Simple Licensing](/protocols/rsl/) · [source](https://www.linkedin.com/posts/supertab_really-simple-licensing-rsl-10-is-now-activity-7452323067600515074-tRa_)

- [Permit](/category/permit/)Observed 2026-05-28 [OpenAI (GPTBot), Anthropic (ClaudeBot), Perplexity (PerplexityBot), Google (Google-Extended), Common Crawl (CCBot)](https://www.honeyb.ai/blog/ai-crawler-user-agents-reference-2026) Vendors operate and publish named user-agent tokens (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot, Google-Extended, CCBot) that sites allow/disallow per-purpose in robots.txt. evidence REPORTED

 [AI Crawler User-Agent Tokens in robots.txt](/protocols/ai-crawler-tokens-robots/) · [source](https://www.honeyb.ai/blog/ai-crawler-user-agents-reference-2026)

- [Pay](/category/pay/)Observed 2026-03-24 [Solana Foundation](https://github.com/solana-foundation/mpp) Solana Foundation co-maintains a fork of the open-source MPP repository standardizing HTTP 402 machine-to-machine payments on Solana - evidence VERIFIED

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://github.com/solana-foundation/mpp)

- [Permit](/category/permit/)Observed 2026-03-18 [STM Association](https://stm-assoc.org/document/stm-tdm-reservation-protocol-tdmrep-publisher-implementation-testimonial/) Scholarly/academic publisher trade association collects and publishes member testimonials on TDMRep implementation, evidence REPORTED.

 [Text and Data Mining Reservation Protocol](/protocols/tdmrep/) · [source](https://stm-assoc.org/document/stm-tdm-reservation-protocol-tdmrep-publisher-implementation-testimonial/)

- [Permit](/category/permit/)Observed 2026-06-15 [STM Association members (French newspapers, trade publishers)](https://stm-assoc.org/eu-commissions-consultation-on-tdm-rights-reservation-protocols/) STM Association recommends TDMRep to members and helped expand it to cover PDF/EPUB; the protocol with most rightsholder support at the EU Commission's June 2026 TDM workshop. evidence REPORTED

 [Text and Data Mining Reservation Protocol](/protocols/tdmrep/) · [source](https://stm-assoc.org/eu-commissions-consultation-on-tdm-rights-reservation-protocols/)

- [Pay](/category/pay/)Observed 2026-04-02 [Tempo](https://tempo.xyz/blog/mpp-sessions/) Tempo co-authored MPP with Stripe and its live mainnet settles MPP payments via its native pathUSD stablecoin - evidence VERIFIED

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://tempo.xyz/blog/mpp-sessions/)

## Registries 21

- [Discover](/category/discover/)Observed 2026-06-08 [Agent Community / Open Agent Registry, Inc. (AID)](https://agentcommunity.org/blog/aid-v2) Author org's own announcement of AID v2 shipping, with a reference implementation repo (agent-identity-discovery) and an IETF Internet-Draft filed under its authorship. evidence VERIFIED

 [Agent Identity and Discovery](/protocols/aid/) · [source](https://agentcommunity.org/blog/aid-v2)

- [Discover](/category/discover/)Observed 2026-07-29 [AGNTCY (Linux Foundation)](https://agntcy.org) Cisco-originated Agent Directory Service stack donated to the Linux Foundation, formative members Cisco/Dell/Google Cloud/Oracle/Red Hat plus 65+ supporting companies. evidence REPORTED

 [Agent Directory Service](/protocols/ads/) · [source](https://www.linkedin.com/posts/outshiftbycisco_one-year-ago-we-donated-agntcy-to-the-linux-activity-7488224330846375936-FmIB)

- [Discover](/category/discover/)Observed 2026-06-17 [AGNTCY / Cisco Outshift (Directory over ARD)](https://blogs.agntcy.org/technical/2026/06/17/ai-catalog-over-directory.html) AGNTCY's own blog explains layering its Agent Directory registry on top of ARD/ai-catalog.json for interoperable discovery. evidence VERIFIED

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://blogs.agntcy.org/technical/2026/06/17/ai-catalog-over-directory.html)

- [Discover](/category/discover/)Observed 2026-07-06 [AGNTCY Agent Directory Service (ai-catalog.json export/import)](https://datatracker.ietf.org/doc/html/draft-mp-agntcy-ads-02) Listed as an implementation in the Agentic Resource Discovery record; evidence VERIFIED.

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://datatracker.ietf.org/doc/html/draft-mp-agntcy-ads-02)

- [Discover](/category/discover/)Observed 2026-07-06 [AGNTCY Agent Directory Service (native OASF record storage)](https://datatracker.ietf.org/doc/html/draft-mp-agntcy-ads-02) Listed as an implementation in the Open Agentic Schema Framework record; evidence VERIFIED.

 [Open Agentic Schema Framework](/protocols/oasf/) · [source](https://datatracker.ietf.org/doc/html/draft-mp-agntcy-ads-02)

- [Discover](/category/discover/)Observed 2026-07-06 [agntcy/dir (AGNTCY Directory reference implementation)](https://github.com/agntcy/dir) Listed as an implementation in the Agent Directory Service record; evidence VERIFIED.

 [Agent Directory Service](/protocols/ads/) · [source](https://github.com/agntcy/dir)

- [Coordinate](/category/coordinate/)Observed 2026-04-20 [AGTP reference implementation (nomoticai/agtp)](https://github.com/nomoticai/agtp) Author Chris Hood/Nomotic's own core spec, server/client/registry reference implementation and IETF draft submission for AGTP; evidence VERIFIED (page states the repo contents directly).

 [Agent Transfer Protocol](/protocols/agtp/) · [source](http://github.com/nomoticai/agtp)

- [Discover](/category/discover/)Observed 2026-06-17 [Cisco Outshift / AGNTCY Directory](https://outshift.cisco.com/blog/ai-ml/agentic-resource-discover-specification-helps-agents-find-each-other) Cisco's own Outshift/AGNTCY blog on Agent Directory (ADS) at enterprise scale, with OASF as the underlying description schema and SDKs (dir-sdk-python, dir-sdk-javascript). evidence VERIFIED

 [Agent Directory Service](/protocols/ads/) · [source](https://outshift.cisco.com/blog/ai-ml/agentic-resource-discover-specification-helps-agents-find-each-other)

- [Permit](/category/permit/)Observed 2026-06-03 [Crawlytics](https://crawlytics.app/resources/ai-bots-list) Maintains a live registry of AI crawler user-agent tokens and robots.txt directives, tracked from observed crawler traffic, evidence VERIFIED (own maintained resource).

 [AI Crawler User-Agent Tokens in robots.txt](/protocols/ai-crawler-tokens-robots/) · [source](https://crawlytics.app/resources/ai-bots-list)

- [Discover](/category/discover/)Observed 2026-07-20 [Eclipse LMOS](https://github.com/eclipse-lmos/lmos-router) Eclipse Foundation's own LMOS project (runtime, router) is under active release (0.27.0 as of April 2026) and was recognized by IDC as one of 16 AI projects to watch in 2026. evidence VERIFIED

 [LMOS (Language Model Operating System)](/protocols/lmos/) · [source](https://www.linkedin.com/posts/eclipse-lmos_activity-7484991448355004417-mseE)

- [Identify](/category/identify/)Observed 2025-10-08 [ERC-8004 registry contracts, curated by the 8004 team (Solidity + TypeScript, mainnet/Base/Sepolia addresses)](https://github.com/erc-8004/erc-8004-contracts) Listed as an implementation in the ERC-8004: Trustless Agents record; evidence VERIFIED.

 [ERC-8004: Trustless Agents](/protocols/erc-8004/) · [source](https://github.com/erc-8004/erc-8004-contracts)

- [Pay](/category/pay/)Observed 2026-04-29 [FIDO Alliance](https://fidoalliance.org/google-donates-agent-payments-protocol-to-fido-alliance/) Google donated stewardship and ownership of the AP2 specification to the FIDO Alliance, which now governs the protocol's development - evidence VERIFIED

 [Agent Payments Protocol](/protocols/ap2/) · [source](https://blog.google/products-and-platforms/platforms/google-pay/agent-payments-protocol-fido-alliance/)

- [Identify](/category/identify/)Observed 2026-05-16 [GoDaddy (ans reference implementation, "Plan G")](https://github.com/godaddy/ans) GoDaddy is actively building an open-source reference implementation of Agent Name Service v2 (registry, transparency log, offline verifier in Go) based on the IETF draft; evidence VERIFIED.

 [Agent Name Service v2 (ANS)](/protocols/ans/) · [source](https://github.com/godaddy/ans/pull/15)

- [Identify](/category/identify/)Observed 2026-01-29 [Identity Registry (mainnet + 16 chains)](https://etherscan.io/address/0x8004A169FB4a3325136EB29fA0ceB6D2e539a432) Listed as an implementation in the ERC-8004: Trustless Agents record; evidence VERIFIED.

 [ERC-8004: Trustless Agents](/protocols/erc-8004/) · [source](https://etherscan.io/address/0x8004A169FB4a3325136EB29fA0ceB6D2e539a432)

- [Discover](/category/discover/)Observed 2026-05-27 [Infoblox / DNS-AID project (Linux Foundation)](https://www.linuxfoundation.org/press/linux-foundation-announces-dns-aid-project-to-advance-decentralized-ai-agent-discovery) Infoblox donated DNS-AID to the Linux Foundation as a vendor-neutral open-source project with a reference implementation (dns-aid-core) using SVCB records and DNSSEC. evidence VERIFIED

 [DNS for AI Discovery](/protocols/dns-aid/) · [source](https://www.linuxfoundation.org/press/linux-foundation-announces-dns-aid-project-to-advance-decentralized-ai-agent-discovery)

- [Act](/category/act/)Observed 2026-08-15 [MCP Registry (official)](https://registry.modelcontextprotocol.io) Official centralized metadata catalog for public MCP servers, backed by Anthropic, GitHub, Microsoft and PulseMCP, hosted at registry.modelcontextprotocol.io; evidence REPORTED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://businessmcp.com/guides/mcp-registry)

- [Identify](/category/identify/)Observed 2026-04-12 [Newt Foundation ERC-8004 Reference Implementation](https://github.com/newt-foundation/trustless-agents-erc-ri) Open-source reference implementation of the ERC-8004 registries (Jan 2026 spec v1.2), 74/74 tests passing and claimed 100% spec compliant; evidence VERIFIED.

 [ERC-8004: Trustless Agents](/protocols/erc-8004/) · [source](https://github.com/newt-foundation/trustless-agents-erc-ri)

- [Permit](/category/permit/)Observed 2026-06-01 [opena2a Agent Authorization Protocol](https://github.laiyagushi.com/opena2a-standards/agent-authorization-protocol) opena2a-standards' Agent Authorization Protocol (AAP): scoped, attested authorization token model + broker/resolution layer, evidence VERIFIED.

 [Agent Authorization Profile](/protocols/aap/) · [source](https://github.laiyagushi.com/opena2a-standards/agent-authorization-protocol)

- [Identify](/category/identify/)Observed 2026-01-29 [Reputation Registry (mainnet + 16 chains)](https://etherscan.io/address/0x8004BAa17C55a88189AE136b182e5fdA19dE9b63) Listed as an implementation in the ERC-8004: Trustless Agents record; evidence VERIFIED.

 [ERC-8004: Trustless Agents](/protocols/erc-8004/) · [source](https://etherscan.io/address/0x8004BAa17C55a88189AE136b182e5fdA19dE9b63)

- [Pay](/category/pay/)Observed 2026-03-05 [UCP Registry](https://ucpregistry.com) Third-party registry that verifies and lists merchants with live UCP endpoints and documents how to get listed - evidence VERIFIED

 [Universal Commerce Protocol](/protocols/ucp/) · [source](https://ucpregistry.com/blog/how-to-implement-ucp-endpoint)

- [Pay](/category/pay/)Observed 2026-07-14 [x402 Foundation (Linux Foundation)](https://www.linuxfoundation.org/press/linux-foundation-announces-operational-launch-of-x402-foundation-to-standardize-internet-native-payments-for-ai-agents-and-applications) The Linux Foundation operationally launched the x402 Foundation after Coinbase contributed the protocol, making it the neutral governance body for x402 (40 members including Visa, Mastercard, AWS, Stripe) - evidence VERIFIED

 [x402](/protocols/x402/) · [source](https://www.linuxfoundation.org/press/linux-foundation-announces-operational-launch-of-x402-foundation-to-standardize-internet-native-payments-for-ai-agents-and-applications)

## Services 153

- [Pay](/category/pay/)Recorded 2026-09-06 [@sweefi/sui (Sui chain binding / reference implementation)](https://raw.githubusercontent.com/s402-protocol/core/main/README.md) Listed as an implementation in the s402 record; evidence VERIFIED.

 [s402](/protocols/s402/) · [source](https://raw.githubusercontent.com/s402-protocol/core/main/README.md)

- [Read](/category/read/)Observed 2026-05-09 [a14y (independent implementation)](https://github.com/jesserobbins/a14y) Independent open-source implementation of the Vercel Agent Readability Specification; evidence VERIFIED.

 [Agent Readability Spec](/protocols/vercel-agent-readability/) · [source](https://github.com/jesserobbins/a14y)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [a2a-dotnet](https://github.com/a2aproject/a2a-dotnet) Listed as an implementation in the Agent2Agent Protocol record; evidence VERIFIED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://github.com/a2aproject/a2a-dotnet)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [a2a-go](https://github.com/a2aproject/a2a-go) Listed as an implementation in the Agent2Agent Protocol record; evidence VERIFIED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://github.com/a2aproject/a2a-go)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [a2a-java](https://github.com/a2aproject/a2a-java) Listed as an implementation in the Agent2Agent Protocol record; evidence VERIFIED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://github.com/a2aproject/a2a-java)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [a2a-js](https://github.com/a2aproject/a2a-js) Listed as an implementation in the Agent2Agent Protocol record; evidence VERIFIED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://github.com/a2aproject/a2a-js)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [a2a-python (reference SDK)](https://github.com/a2aproject/a2a-python) Listed as an implementation in the Agent2Agent Protocol record; evidence VERIFIED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://github.com/a2aproject/a2a-python)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [a2a-rs (Rust)](https://github.com/a2aproject/a2a-rs) Listed as an implementation in the Agent2Agent Protocol record; evidence VERIFIED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://github.com/a2aproject/a2a-rs)

- [Present](/category/present/)Observed 2026-09-05 [A2UI Composer (visual JSON editor)](https://a2ui-project.github.io/composer/) Listed as an implementation in the A2UI (Agent to UI) Protocol record; evidence REPORTED.

 [A2UI (Agent to UI) Protocol](/protocols/a2ui/) · [source](https://a2ui-project.github.io/composer/)

- [Present](/category/present/)Observed 2026-09-05 [A2UI Theater (Lit/React/Angular streaming demo renderers)](https://a2ui-composer.ag-ui.com/theater) Listed as an implementation in the A2UI (Agent to UI) Protocol record; evidence REPORTED.

 [A2UI (Agent to UI) Protocol](/protocols/a2ui/) · [source](https://a2ui-composer.ag-ui.com/theater)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [AAMP GitHub hub (5 constituent repos)](https://github.com/IABTechLab/AAMP) Listed as an implementation in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://github.com/IABTechLab/AAMP)

- [Permit](/category/permit/)Observed 2026-02-07 [aapspec/reference-impl](https://github.com/aapspec/reference-impl) Listed as an implementation in the Agent Authorization Profile record; evidence REPORTED.

 [Agent Authorization Profile](/protocols/aap/) · [source](https://github.com/aapspec/reference-impl)

- [Permit](/category/permit/)Observed 2026-05-01 [AAuth for MCP (packages-js)](https://github.com/clawdreyhepburn/packages-js) TypeScript packages adding AAuth (Agent Auth) to MCP servers and agents, maintained with DickHardt as top contributor, evidence VERIFIED.

 [Agent Authorization Grant](/protocols/aauth/) · [source](https://github.com/clawdreyhepburn/packages-js)

- [Present](/category/present/)Observed 2026-09-05 [AG-UI / CopilotKit (names AG-UI as A2UI's standard transport binding; ships an a2ui-toolkit package and catalog-forwarding integration)](https://docs.ag-ui.com/introduction) Listed as an adopter in the A2UI (Agent to UI) Protocol record; evidence VERIFIED.

 [A2UI (Agent to UI) Protocol](/protocols/a2ui/) · [source](https://docs.ag-ui.com/introduction)

- [Present](/category/present/)Observed 2026-09-05 [AG-UI Dojo (building-blocks demo viewer across all supported frameworks)](https://dojo.ag-ui.com/) Listed as an implementation in the Agent-User Interaction Protocol record; evidence REPORTED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://dojo.ag-ui.com/)

- [Read](/category/read/)Observed 2026-05-11 [agent-ready-mcp](https://github.com/mlava/agent-ready-mcp) MCP-based checker running 71 checks across four spec families, including the Vercel Agent Readability Spec and llmstxt.org; evidence VERIFIED.

 [Agent Readability Spec](/protocols/vercel-agent-readability/), [llms.txt](/protocols/llms-txt/) · [source](https://github.com/mlava/agent-ready-mcp)

- [Read](/category/read/)Recorded 2026-09-06 [agent-ready.dev (scores sites against the Vercel Agent Readability Spec and llmstxt.org)](https://agent-ready.dev/) Listed as an implementation in the Agent Readability Spec record; evidence REPORTED.

 [Agent Readability Spec](/protocols/vercel-agent-readability/) · [source](https://agent-ready.dev/)

- [Coordinate](/category/coordinate/)Observed 2026-06-01 [AgentConnect (ANP reference SDK)](https://github.com/agent-network-protocol/AgentConnect) Open-source SDK implementing ANP (did:wba auth, agent description, negotiation, secure comms) maintained by the protocol's own project; evidence REPORTED (own-ecosystem tooling, not third-party adoption).

 [Agent Network Protocol](/protocols/anp/) · [source](https://tomevault.io/tome/agent-network-protocol/anp)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [Agentic Audiences (formerly LiveRamp UCP donation)](https://github.com/IABTechLab/agentic-audiences) Listed as an implementation in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://github.com/IABTechLab/agentic-audiences)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [Agentic Direct reference implementation](https://github.com/IABTechLab/agentic-direct) Listed as an implementation in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://github.com/IABTechLab/agentic-direct)

- [Pay](/category/pay/)Observed 2026-02-25 [AgenticCommerce.sol / IACPHook.sol (reference implementation in the EIP text)](https://eips.ethereum.org/EIPS/eip-8183) Listed as an implementation in the ERC-8183: Agentic Commerce record; evidence VERIFIED.

 [ERC-8183: Agentic Commerce](/protocols/erc-8183/) · [source](https://eips.ethereum.org/EIPS/eip-8183)

- [Act](/category/act/)Observed 2026-09-06 [agenticweb.wiki MCP server](https://agenticweb.wiki/mcp/server-card) Stateless streamable-HTTP MCP server on Cloudflare Workers; listed in the site's own ARD manifest.

 [Model Context Protocol](/protocols/mcp/) · [source](https://agenticweb.wiki/.well-known/ard.json)

- [Discover](/category/discover/)Observed 2026-05-13 [agents-txt/agents-txt (GitHub project)](https://trendshift.io/repositories/32945) Independent open-source implementation of the agents.txt capability-declaration convention, trending with multiple contributors and social discussion of production use. evidence REPORTED

 [agents.txt](/protocols/agents-txt/) · [source](https://trendshift.io/repositories/32945)

- [Discover](/category/discover/)Observed 2026-04-02 [agntcy/dir-sdk-javascript](https://github.com/agntcy/dir-sdk-javascript) Official JavaScript/TypeScript SDK for the AGNTCY Directory (ADS) API, evidence VERIFIED.

 [Agent Directory Service](/protocols/ads/) · [source](https://github.com/agntcy/dir-sdk-javascript)

- [Discover](/category/discover/)Observed 2026-04-02 [agntcy/dir-sdk-python](https://github.com/agntcy/dir-sdk-python) Official Python SDK for the AGNTCY Directory (ADS) API, evidence VERIFIED.

 [Agent Directory Service](/protocols/ads/) · [source](https://github.com/agntcy/dir-sdk-python)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [agntcy/slim (Rust core, data plane / session layer / control plane)](https://github.com/agntcy/slim) Listed as an implementation in the Secure Low-Latency Interactive Messaging record; evidence VERIFIED.

 [Secure Low-Latency Interactive Messaging](/protocols/slim/) · [source](https://github.com/agntcy/slim)

- [Pay](/category/pay/)Observed 2026-05-25 [Agora API (agoraproto.org, testnet)](https://api.agoraproto.org/v1/openapi.json) Listed as an implementation in the Agora (agent marketplace protocol) record; evidence VERIFIED.

 [Agora (agent marketplace protocol)](/protocols/agora-commerce-protocol/) · [source](https://api.agoraproto.org/v1/openapi.json)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [agora-protocol/python (Python library)](https://raw.githubusercontent.com/agora-protocol/paper-demo/main/README.md) Listed as an implementation in the Agora Protocol record; evidence REPORTED.

 [Agora Protocol](/protocols/agora-protocol/) · [source](https://raw.githubusercontent.com/agora-protocol/paper-demo/main/README.md)

- [Coordinate](/category/coordinate/)Observed 2026-05-16 [AGTP module for Drupal](https://www.drupal.org/project/agtp) Third-party Drupal module bringing AGTP multi-agent messaging to Drupal sites, independent of the protocol's own creator; evidence REPORTED (single third-party integration, low usage confirmed).

 [Agent Transfer Protocol](/protocols/agtp/) · [source](https://www.drupal.org/project/agtp)

- [Identify](/category/identify/)Observed 2026-04-02 [aip-agents (Sunil Prakash)](https://sunilprakash.com/aip/quickstart/) Independent reference implementation wrapping AIP cryptographic agent identity (token minting, delegation) into Google ADK, CrewAI, and LangChain framework adapters; evidence THIN (single-maintainer project, no independent adoption verification).

 [Agent Identity Protocol (AIP)](/protocols/aip/) · [source](https://sunilprakash.com/writing/agent-identity-crewai/)

- [Permit](/category/permit/)Recorded 2026-09-06 [aitxt.ing (unrelated content-description product using the same filename)](https://aitxt.ing/) Listed as an implementation in the ai.txt record; evidence THIN.

 [ai.txt](/protocols/ai-txt/) · [source](https://aitxt.ing/)

- [Identify](/category/identify/)Observed 2026-07-06 [Akamai](https://www.akamai.com) Akamai implements the Web Bot Auth / HTTP message signature drafts as a verifier alongside Cloudflare; evidence REPORTED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://github.laiyagushi.com/sitedex/web-bot-auth-lint)

- [Act](/category/act/)Recorded 2026-09-06 [Amp](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Permit](/category/permit/)Recorded 2026-09-06 [Anthropic crawlers (ClaudeBot, Claude-User, Claude-SearchBot)](https://support.claude.com/en/articles/8896518) Listed as an implementation in the AI Crawler User-Agent Tokens in robots.txt record; evidence VERIFIED.

 [AI Crawler User-Agent Tokens in robots.txt](/protocols/ai-crawler-tokens-robots/) · [source](https://support.claude.com/en/articles/8896518)

- [Pay](/category/pay/)Recorded 2026-09-06 [AP2 SDK + samples (Python, Go, Android) using Google ADK](https://raw.githubusercontent.com/google-agentic-commerce/AP2/main/README.md) Listed as an implementation in the Agent Payments Protocol record; evidence VERIFIED.

 [Agent Payments Protocol](/protocols/ap2/) · [source](https://raw.githubusercontent.com/google-agentic-commerce/AP2/main/README.md)

- [Pay](/category/pay/)Recorded 2026-09-06 [Aperture (Lightning Labs reverse-proxy L402 gateway)](https://github.com/lightninglabs/aperture) Listed as an implementation in the L402 record; evidence REPORTED.

 [L402](/protocols/l402/) · [source](https://github.com/lightninglabs/aperture)

- [Permit](/category/permit/)Recorded 2026-09-06 [auth.md (chains RFC 9728 + RFC 8414 as its discovery layer)](https://auth-md.com/specification) Listed as an implementation in the OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization) record; evidence REPORTED.

 [OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization)](/protocols/oauth-metadata-for-agents/) · [source](https://auth-md.com/specification)

- [Coordinate](/category/coordinate/)Observed 2026-04-09 [AWS Bedrock AgentCore Runtime](https://aws.amazon.com/bedrock/agentcore/) Bedrock AgentCore Runtime provides managed A2A server infrastructure, named by the Linux Foundation as deep platform integration; evidence REPORTED.

 [Agent2Agent Protocol](/protocols/a2a/) · [source](https://www.linuxfoundation.org/press/a2a-protocol-surpasses-150-organizations-lands-in-major-cloud-platforms-and-sees-enterprise-production-use-in-first-year?hs_amp=true)

- [Present](/category/present/)Observed 2026-06-28 [AWS Strands Agents](https://strandsagents.com) AWS's open-source agent SDK listed as a supported AG-UI integration in the ag-ui-protocol repo's own integrations table; evidence REPORTED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://deepwiki.com/ag-ui-protocol/ag-ui/3-getting-started)

- [Present](/category/present/)Observed 2026-09-05 [AWS Strands Agents / AWS Bedrock AgentCore (1st party)](https://docs.ag-ui.com/introduction) Listed as an adopter in the Agent-User Interaction Protocol record; evidence VERIFIED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://docs.ag-ui.com/introduction)

- [Identify](/category/identify/)Observed 2026-08-03 [AWS WAF](https://aws.amazon.com/waf/) AWS WAF added Web Bot Auth (RFC 9421 HTTP message signature) verification support; evidence REPORTED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://packet.guru/blog/web-bot-auth-signed-agents)

- [Act](/category/act/)Observed 2026-04-29 [Azure MCP Server](https://github.com/mcp/com.microsoft/azure) Microsoft's own hosted/self-hostable remote MCP server exposing Azure services to AI agents, GA as of Azure MCP Server 2.0; evidence VERIFIED (Microsoft's own listing page).

 [Model Context Protocol](/protocols/mcp/) · [source](https://github.com/mcp/com.microsoft/azure)

- [Identify](/category/identify/)Recorded 2026-09-06 [Bot-Authentication (Python)](https://github.com/cyberstormdotmu/bot-authentication) Listed as an implementation in the Web Bot Auth HTTP Message Signatures record; evidence REPORTED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://github.com/cyberstormdotmu/bot-authentication)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [Buyer Agent SDK](https://github.com/IABTechLab/buyer-agent) Listed as an implementation in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://github.com/IABTechLab/buyer-agent)

- [Identify](/category/identify/)Recorded 2026-09-06 [cert-manager](https://spiffe.io/docs/latest/spiffe-about/overview/) Listed as an implementation in the SPIFFE (Secure Production Identity Framework for Everyone) record; evidence VERIFIED.

 [SPIFFE (Secure Production Identity Framework for Everyone)](/protocols/spiffe/) · [source](https://spiffe.io/docs/latest/spiffe-about/overview/)

- [Act](/category/act/)Recorded 2026-09-06 [ChatGPT & Codex](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Present](/category/present/)Observed 2026-09-05 [ChatGPT (supported client, first-party docs)](https://developers.openai.com/apps-sdk/mcp-apps-in-chatgpt/) Listed as an adopter in the MCP Apps record; evidence VERIFIED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://developers.openai.com/apps-sdk/mcp-apps-in-chatgpt/)

- [Permit](/category/permit/)Observed 2026-05-11 [christian-posta / aauth-go-library](https://github.laiyagushi.com/christian-posta/aauth-go-library) Go implementation of AAuth used in production by extauth-aauth-resource, an Agentgateway/Envoy ext_authz filter enforcing AAuth on inbound service requests. evidence VERIFIED

 [Agent Authorization Grant](/protocols/aauth/) · [source](https://github.laiyagushi.com/christian-posta/aauth-go-library)

- [Present](/category/present/)Observed 2026-09-05 [Claude (supported client, first-party docs)](https://claude.com/docs/connectors/building/mcp-apps/getting-started) Listed as an adopter in the MCP Apps record; evidence VERIFIED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://claude.com/docs/connectors/building/mcp-apps/getting-started)

- [Act](/category/act/)Recorded 2026-09-06 [Claude / Claude Desktop (Anthropic)](https://modelcontextprotocol.io/docs/extensions/apps) Listed as an implementation in the Model Context Protocol record; evidence VERIFIED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://modelcontextprotocol.io/docs/extensions/apps)

- [Act](/category/act/)Recorded 2026-09-06 [Claude Code](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Act](/category/act/)Recorded 2026-09-06 [Claude.ai](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Pay](/category/pay/)Observed 2026-03-10 [ClawPlaza erc8183-reference](https://github.com/erc8183/erc8183-reference) ClawPlaza open-sourced a reference implementation deployed to Base Mainnet, built from the production ClawWork agent-labor marketplace (work.clawplaza.ai) that predates the ERC-8183 spec - evidence VERIFIED

 [ERC-8183: Agentic Commerce](/protocols/erc-8183/) · [source](https://github.com/erc8183/erc8183-reference)

- [Discover](/category/discover/)Observed 2026-04-22 [Cloudflare (docs)](https://github.com/cloudflare/cloudflare-docs/commit/4732607805c4fab35530c9466f62e54a29f20e48) Merged commit publishing Cloudflare's own API catalog for automated discovery per RFC 9727. evidence VERIFIED

 [api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs](/protocols/api-catalog-rfc9727/) · [source](https://github.com/cloudflare/cloudflare-docs/commit/4732607805c4fab35530c9466f62e54a29f20e48)

- [Permit](/category/permit/)Observed 2025-09-24 [Cloudflare (native robots.txt content-signal management for Cloudflare-hosted zones)](https://blog.cloudflare.com/content-signals-policy/) Listed as an implementation in the Content Signals Policy record; evidence VERIFIED.

 [Content Signals Policy](/protocols/cloudflare-content-signals-policy/) · [source](https://blog.cloudflare.com/content-signals-policy/)

- [Identify](/category/identify/)Recorded 2026-09-06 [cloudflare/web-bot-auth (Chrome MV3, Cloudflare Workers, Rust binaries, server verifier)](https://github.com/cloudflare/web-bot-auth) Listed as an implementation in the Web Bot Auth HTTP Message Signatures record; evidence VERIFIED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://github.com/cloudflare/web-bot-auth)

- [Present](/category/present/)Observed 2026-04-17 [CopilotKit](https://www.copilotkit.ai/blog/a2ui-whats-new-in-google-generative-ui-spec) CopilotKit states it is a design partner on the A2UI spec, shipped A2UI Composer, and added A2UI v0.9 support (Python SDK + React renderer) so any AG-UI agent can drive A2UI; evidence VERIFIED (CopilotKit's own blog and merged PR CopilotKit/CopilotKit#3453).

 [A2UI (Agent to UI) Protocol](/protocols/a2ui/) · [source](https://www.copilotkit.ai/blog/a2ui-whats-new-in-google-generative-ui-spec)

- [Present](/category/present/)Observed 2026-09-05 [CopilotKit (reference/1st-party client)](https://github.com/CopilotKit/CopilotKit) Listed as an implementation in the Agent-User Interaction Protocol record; evidence VERIFIED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://github.com/CopilotKit/CopilotKit)

- [Present](/category/present/)Observed 2026-07-24 [CrewAI](https://www.crewai.com) Multi-agent framework listed among first-party AG-UI framework integrations (alongside LangGraph, Mastra, LlamaIndex, Agno, PydanticAI, ADK) that let agents communicate with AG-UI-speaking frontends; evidence REPORTED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://deepwiki.com/CopilotKit/CopilotKit/4.3-agent-framework-integrations)

- [Act](/category/act/)Recorded 2026-09-06 [Cursor](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Act](/category/act/)Recorded 2026-09-06 [Databricks Genie Code](https://agentskills.io) Listed as an adopter in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Discover](/category/discover/)Observed 2026-04-27 [Eclipse LMOS project](https://mvnrepository.com/artifact/org.eclipse.lmos/lmos-runtime-spring-boot-starter) Eclipse Foundation LMOS runtime and router published as actively versioned Maven artifacts with real usage counts. evidence VERIFIED

 [LMOS (Language Model Operating System)](/protocols/lmos/) · [source](https://mvnrepository.com/artifact/org.eclipse.lmos/lmos-runtime-spring-boot-starter)

- [Present](/category/present/)Observed 2026-09-05 [examples/basic-host (reference host example in the ext-apps repo)](https://github.com/modelcontextprotocol/ext-apps) Listed as an implementation in the MCP Apps record; evidence VERIFIED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://github.com/modelcontextprotocol/ext-apps)

- [Act](/category/act/)Recorded 2026-09-06 [Factory](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Pay](/category/pay/)Observed 2026-05-18 [Fireblocks](https://github.com/fireblocks/x402-facilitator) Fireblocks ships an open-source x402 payment facilitator plus a fully managed hosted facilitator offering - evidence VERIFIED

 [x402](/protocols/x402/) · [source](https://github.com/fireblocks/x402-facilitator)

- [Act](/category/act/)Recorded 2026-09-06 [Gemini CLI](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Act](/category/act/)Recorded 2026-09-06 [GitHub Copilot](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Act](/category/act/)Observed 2026-06-18 [GitHub MCP Server](https://github.com/mcp/github/github-mcp-server) GitHub's own hosted remote MCP server connecting AI tools to repos, issues, PRs and workflows; evidence VERIFIED (GitHub's own listing page).

 [Model Context Protocol](/protocols/mcp/) · [source](https://github.com/mcp/github/github-mcp-server)

- [Present](/category/present/)Observed 2026-09-05 [Google ADK (1st party)](https://docs.ag-ui.com/introduction) Listed as an adopter in the Agent-User Interaction Protocol record; evidence VERIFIED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://docs.ag-ui.com/introduction)

- [Present](/category/present/)Observed 2026-06-28 [Google Agent Development Kit (ADK)](https://google.github.io/adk-docs/) AG-UI protocol repo lists Google ADK as a supported integration with its own integrations/adk-middleware package; evidence REPORTED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://deepwiki.com/ag-ui-protocol/ag-ui/3-getting-started)

- [Act](/category/act/)Observed 2026-08-07 [Google Chrome (origin trial, from Chrome 149)](https://developer.chrome.com/docs/ai/webmcp) Listed as an implementation in the WebMCP record; evidence VERIFIED.

 [WebMCP](/protocols/webmcp/) · [source](https://developer.chrome.com/docs/ai/webmcp)

- [Read](/category/read/)Observed 2026-08-26 [Google Cloud Knowledge Catalog](https://cloud.google.com/blog/products/data-analytics/scale-okf-bundles-across-an-organization-with-knowledge-catalog) Google Cloud's Knowledge Catalog ingests OKF bundles and makes their concepts discoverable and access-governed for agents (OKF v0.2 update); evidence VERIFIED (Google's own blog).

 [Open Knowledge Format](/protocols/okf/) · [source](https://cloud.google.com/blog/products/data-analytics/scale-okf-bundles-across-an-organization-with-knowledge-catalog)

- [Permit](/category/permit/)Recorded 2026-09-06 [Google crawlers (Googlebot, Google-Extended)](https://developers.google.com/search/docs/crawling-indexing/google-common-crawlers) Listed as an implementation in the AI Crawler User-Agent Tokens in robots.txt record; evidence VERIFIED.

 [AI Crawler User-Agent Tokens in robots.txt](/protocols/ai-crawler-tokens-robots/) · [source](https://developers.google.com/search/docs/crawling-indexing/google-common-crawlers)

- [Present](/category/present/)Observed 2026-05-14 [Google Maps Agentic UI Toolkit (A2UI)](https://github.com/googlemaps/a2ui) Google Maps ships an A2UI implementation as part of its Maps Agentic UI Toolkit, letting agents present rich interactive map interfaces; evidence VERIFIED (repo README states this directly, homepage at developers.google.com/maps/ai/agentic-ui-toolkit).

 [A2UI (Agent to UI) Protocol](/protocols/a2ui/) · [source](https://github.com/googlemaps/a2ui)

- [Act](/category/act/)Observed 2026-08-07 [GoogleChromeLabs demo suite (webmcp-tools)](https://developer.chrome.com/docs/ai/webmcp) Listed as an adopter in the WebMCP record; evidence VERIFIED.

 [WebMCP](/protocols/webmcp/) · [source](https://developer.chrome.com/docs/ai/webmcp)

- [Act](/category/act/)Observed 2026-04-22 [Goose (Block)](https://agentclientprotocol.com/updates) Listed as an implementation in the Agent Client Protocol record; evidence REPORTED.

 [Agent Client Protocol](/protocols/agent-client-protocol/) · [source](https://agentclientprotocol.com/updates)

- [Act](/category/act/)Recorded 2026-09-06 [Goose (Block)](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Permit](/category/permit/)Recorded 2026-09-06 [Grantex (incomplete reference implementation, not required for conformance)](https://datatracker.ietf.org/doc/html/draft-mishra-oauth-agent-grants-02) Listed as an implementation in the OAuth Profile for Delegated AI Agent Authorization record; evidence REPORTED.

 [OAuth Profile for Delegated AI Agent Authorization](/protocols/daap/) · [source](https://datatracker.ietf.org/doc/html/draft-mishra-oauth-agent-grants-02)

- [Identify](/category/identify/)Recorded 2026-09-06 [guzzle-web-bot-auth-middleware (PHP)](https://github.com/olipayne/guzzle-web-bot-auth-middleware) Listed as an implementation in the Web Bot Auth HTTP Message Signatures record; evidence REPORTED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://github.com/olipayne/guzzle-web-bot-auth-middleware)

- [Identify](/category/identify/)Observed 2026-06-01 [HashiCorp Vault](https://www.hashicorp.com/products/vault) HashiCorp Vault 1.21 added a native SPIFFE auth method and can issue X.509-SVID certificates to authenticated agent workloads; evidence REPORTED.

 [SPIFFE (Secure Production Identity Framework for Everyone)](/protocols/spiffe/) · [source](https://alatirok.com/spiffe-spire-ai-agents-svid-mtls/)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [i-am-bee/acp (archived reference server)](https://github.com/i-am-bee/acp) Listed as an implementation in the Agent Communication Protocol record; evidence VERIFIED.

 [Agent Communication Protocol](/protocols/agent-communication-protocol/) · [source](https://github.com/i-am-bee/acp)

- [Act](/category/act/)Observed 2026-07-20 [IAB Tech Lab ARTF Go reference implementation](https://github.com/IABTechLab/agentic-real-time-framework) Listed as an implementation in the Agentic Real Time Framework record; evidence VERIFIED.

 [Agentic Real Time Framework](/protocols/artf/) · [source](https://github.com/IABTechLab/agentic-real-time-framework)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [IBM BeeAI Platform (historical, prior to migration to A2A)](https://github.com/i-am-bee/beeai-platform) Listed as an adopter in the Agent Communication Protocol record; evidence REPORTED.

 [Agent Communication Protocol](/protocols/agent-communication-protocol/) · [source](https://github.com/i-am-bee/beeai-platform)

- [Discover](/category/discover/)Observed 2026-05-12 [Infoblox DNS-AID reference implementation](https://github.com/cherbst-IB/dns-aid-core) Fork of infobloxopen/dns-aid-core, Infoblox's open-source reference implementation of DNS-AID, evidence VERIFIED.

 [DNS for AI Discovery](/protocols/dns-aid/) · [source](https://github.com/cherbst-IB/dns-aid-core)

- [Read](/category/read/)Recorded 2026-09-06 [is-agentic.com (separate agent-readiness scoring API referenced in Vercel's own follow-up guide)](https://vercel.com/kb/guide/make-your-site-readable-by-ai-agents) Listed as an implementation in the Agent Readability Spec record; evidence THIN.

 [Agent Readability Spec](/protocols/vercel-agent-readability/) · [source](https://vercel.com/kb/guide/make-your-site-readable-by-ai-agents)

- [Permit](/category/permit/)Observed 2026-04-17 [isitagentready.com (Cloudflare Agent Readiness)](https://blog.cloudflare.com/agent-readiness/) Cloudflare's own scanning tool checks sites for Content Signals Policy adoption alongside other agent-readiness signals, evidence VERIFIED (own blog).

 [Content Signals Policy](/protocols/cloudflare-content-signals-policy/) · [source](https://blog.cloudflare.com/agent-readiness/)

- [Identify](/category/identify/)Recorded 2026-09-06 [Istio](https://spiffe.io/docs/latest/spiffe-about/overview/) Listed as an implementation in the SPIFFE (Secure Production Identity Framework for Everyone) record; evidence VERIFIED.

 [SPIFFE (Secure Production Identity Framework for Everyone)](/protocols/spiffe/) · [source](https://spiffe.io/docs/latest/spiffe-about/overview/)

- [Act](/category/act/)Observed 2026-02-18 [JetBrains IDEs](https://agentclientprotocol.com/updates) Listed as an implementation in the Agent Client Protocol record; evidence VERIFIED.

 [Agent Client Protocol](/protocols/agent-client-protocol/) · [source](https://agentclientprotocol.com/updates)

- [Act](/category/act/)Recorded 2026-09-06 [JetBrains Junie](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Identify](/category/identify/)Observed 2026-03-05 [Kagenti](https://next.redhat.com/2026/03/05/zero-trust-ai-agents-on-kubernetes-what-i-learned-deploying-multi-agent-systems-on-kagenti/) Kagenti (Red Hat Emerging Technologies project) issues each AI agent pod a SPIFFE/SPIRE workload identity (X.509 SVID) for zero-trust multi-agent systems on Kubernetes; evidence VERIFIED (author's own deployment writeup).

 [SPIFFE (Secure Production Identity Framework for Everyone)](/protocols/spiffe/) · [source](https://next.redhat.com/2026/03/05/zero-trust-ai-agents-on-kubernetes-what-i-learned-deploying-multi-agent-systems-on-kagenti/)

- [Present](/category/present/)Observed 2026-09-05 [LangChain / LangGraph and CrewAI (launch partnerships)](https://github.com/ag-ui-protocol/ag-ui) Listed as an adopter in the Agent-User Interaction Protocol record; evidence VERIFIED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://github.com/ag-ui-protocol/ag-ui)

- [Permit](/category/permit/)Observed 2026-07-17 [las-wg/agent-permissions.json (JSON Schema + spec)](https://github.com/las-wg/agent-permissions.json) Listed as an implementation in the agent-permissions.json record; evidence VERIFIED.

 [agent-permissions.json](/protocols/agent-permissions-json/) · [source](https://github.com/las-wg/agent-permissions.json)

- [Permit](/category/permit/)Observed 2026-05-02 [Mapsoft PDF Hub](https://mapsoft.com/posts/ai-training-opt-out-publishers.html) Free hosted tool letting publishers embed TDM-reservation (TDMRep) flags into PDFs, evidence VERIFIED (own product page).

 [Text and Data Mining Reservation Protocol](/protocols/tdmrep/) · [source](https://mapsoft.com/posts/ai-training-opt-out-publishers.html)

- [Permit](/category/permit/)Observed 2026-07-30 [marcofanti / aauth-java-library](https://github.laiyagushi.com/marcofanti/aauth-java-library) Independent Java implementation of AAuth (RFC 9421 HTTP Message Signatures + JWT proof-of-possession) with an accompanying Person Server + Agent Server demo portal. evidence VERIFIED

 [Agent Authorization Grant](/protocols/aauth/) · [source](https://github.laiyagushi.com/marcofanti/aauth-java-library)

- [Account](/category/account/)Observed 2026-09-05 [Mastercard Verifiable Intent reference implementation](https://github.com/agent-intent/verifiable-intent) Listed as an implementation in the Verifiable Intent record; evidence VERIFIED.

 [Verifiable Intent](/protocols/vi/) · [source](https://github.com/agent-intent/verifiable-intent)

- [Present](/category/present/)Observed 2026-06-28 [Mastra](https://mastra.ai) TypeScript agent framework listed as a supported AG-UI integration in the ag-ui-protocol repo's own integrations table; evidence REPORTED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://deepwiki.com/ag-ui-protocol/ag-ui/3-getting-started)

- [Present](/category/present/)Observed 2026-09-05 [MCP-UI client (@mcp-ui/client, AppRenderer — full MCP Apps framework used by several hosts)](https://github.com/MCP-UI-Org/mcp-ui) Listed as an implementation in the MCP Apps record; evidence VERIFIED.

 [MCP Apps](/protocols/mcp-apps/) · [source](https://github.com/MCP-UI-Org/mcp-ui)

- [Discover](/category/discover/)Observed 2026-05-11 [MetricSpot](https://metricspot.com/docs/agents-txt/) SEO/AI-readiness audit tool checks sites for a valid /agents.txt as part of its 'AI-ready' audit profile, evidence VERIFIED (own documented check).

 [agents.txt](/protocols/agents-txt/) · [source](https://metricspot.com/docs/agents-txt/)

- [Act](/category/act/)Recorded 2026-09-06 [Microsoft 365 Copilot](https://modelcontextprotocol.io/docs/extensions/apps) Listed as an implementation in the Model Context Protocol record; evidence VERIFIED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://modelcontextprotocol.io/docs/extensions/apps)

- [Present](/category/present/)Observed 2026-04-08 [Microsoft Agent Framework](https://github.com/microsoft/agent-framework) Microsoft's own agent orchestration framework ships an agent_framework.ag_ui bridge package that wraps any MAF workflow into an AG-UI-compatible SSE endpoint, with active PRs adding reasoning-event support in both Python and .NET; evidence VERIFIED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://devblogs.microsoft.com/agent-framework/ag-ui-multi-agent-workflow-demo/)

- [Present](/category/present/)Observed 2026-09-05 [Microsoft Agent Framework (1st party)](https://docs.ag-ui.com/introduction) Listed as an adopter in the Agent-User Interaction Protocol record; evidence VERIFIED.

 [Agent-User Interaction Protocol](/protocols/ag-ui/) · [source](https://docs.ag-ui.com/introduction)

- [Permit](/category/permit/)Observed 2026-06-30 [modelcontextprotocol/rust-sdk](https://deepwiki.com/modelcontextprotocol/rust-sdk/4.1-oauth-2.0-framework) MCP's official Rust SDK implements OAuth 2.1 metadata discovery per RFC 8414/RFC 9728 for MCP server authorization. evidence VERIFIED

 [OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization)](/protocols/oauth-metadata-for-agents/) · [source](https://deepwiki.com/modelcontextprotocol/rust-sdk/4.1-oauth-2.0-framework)

- [Pay](/category/pay/)Recorded 2026-09-06 [MPP-go (Go)](https://mpp.dev) Listed as an implementation in the Machine Payments Protocol record; evidence REPORTED.

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://mpp.dev)

- [Pay](/category/pay/)Recorded 2026-09-06 [MPP-rb (Ruby)](https://mpp.dev) Listed as an implementation in the Machine Payments Protocol record; evidence REPORTED.

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://mpp.dev)

- [Pay](/category/pay/)Recorded 2026-09-06 [MPP-rs (Rust)](https://mpp.dev) Listed as an implementation in the Machine Payments Protocol record; evidence REPORTED.

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://mpp.dev)

- [Pay](/category/pay/)Recorded 2026-09-06 [mppx (TypeScript)](https://mpp.dev) Listed as an implementation in the Machine Payments Protocol record; evidence REPORTED.

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://mpp.dev)

- [Coordinate](/category/coordinate/)Observed 2026-06-08 [NEAR AI Shade Workers](https://bingx.com/en/learn/article/what-are-near-intelligence-ai-agents-on-near-protocol) Third-party explainer states NEAR AI's Shade Workers use AITP (Agent Interaction and Transaction Protocol) to interact in a marketplace, managing liquidity portfolios and settling assets; evidence REPORTED, THIN (secondary source, no NEAR AI first-party page confirming AITP use was found in this sweep).

 [AITP (Agent Interaction & Transaction Protocol)](/protocols/aitp/) · [source](https://bingx.com/en/learn/article/what-are-near-intelligence-ai-agents-on-near-protocol)

- [Pay](/category/pay/)Observed 2026-05-09 [Nevermined](https://facilitator.live.nevermined.app) Nevermined runs a live mainnet x402 facilitator processing production transactions - evidence VERIFIED

 [x402](/protocols/x402/) · [source](https://nevermined.ai/blog/the-payment-layer-ai-agents-actually-need-introducing-the-nevermined-x402-facilitator)

- [Act](/category/act/)Recorded 2026-09-06 [NLWeb reference implementation (Python)](https://github.com/nlweb-ai/NLWeb) Listed as an implementation in the NLWeb record; evidence VERIFIED.

 [NLWeb](/protocols/nlweb/) · [source](https://github.com/nlweb-ai/NLWeb)

- [Act](/category/act/)Recorded 2026-09-06 [OpenAI ChatGPT (Plugins)](https://developers.openai.com/plugins/concepts/mcp-server) Listed as an implementation in the OpenAI Plugins (formerly Apps SDK) record; evidence VERIFIED.

 [OpenAI Plugins (formerly Apps SDK)](/protocols/openai-apps-sdk-manifests/) · [source](https://developers.openai.com/plugins/concepts/mcp-server)

- [Act](/category/act/)Recorded 2026-09-06 [OpenAI ChatGPT / Codex (Plugins, formerly Apps SDK)](https://developers.openai.com/plugins/concepts/mcp-server) Listed as an implementation in the Model Context Protocol record; evidence VERIFIED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://developers.openai.com/plugins/concepts/mcp-server)

- [Act](/category/act/)Recorded 2026-09-06 [OpenAI Codex](https://developers.openai.com/plugins) Listed as an implementation in the OpenAI Plugins (formerly Apps SDK) record; evidence VERIFIED.

 [OpenAI Plugins (formerly Apps SDK)](/protocols/openai-apps-sdk-manifests/) · [source](https://developers.openai.com/plugins)

- [Pay](/category/pay/)Recorded 2026-09-06 [OpenAI Commerce (ChatGPT checkout)](https://developers.openai.com/commerce/) Listed as an implementation in the Agentic Commerce Protocol record; evidence REPORTED.

 [Agentic Commerce Protocol](/protocols/agentic-commerce-protocol/) · [source](https://developers.openai.com/commerce/)

- [Permit](/category/permit/)Recorded 2026-09-06 [OpenAI crawlers (GPTBot, OAI-SearchBot, OAI-AdsBot)](https://developers.openai.com/api/docs/bots) Listed as an implementation in the AI Crawler User-Agent Tokens in robots.txt record; evidence VERIFIED.

 [AI Crawler User-Agent Tokens in robots.txt](/protocols/ai-crawler-tokens-robots/) · [source](https://developers.openai.com/api/docs/bots)

- [Act](/category/act/)Recorded 2026-09-06 [OpenCode](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Act](/category/act/)Recorded 2026-09-06 [OpenHands](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Permit](/category/permit/)Observed 2026-05-08 [OpenRSL](https://openrsl.org/) Open-source toolkit for publishers to generate and serve RSL licensing declarations and monetize AI traffic. evidence VERIFIED

 [Really Simple Licensing](/protocols/rsl/) · [source](https://openrsl.org/)

- [Read](/category/read/)Observed 2026-09-05 [Ossie converters: Databricks](https://github.com/apache/ossie/tree/main/converters/databricks) Listed as an implementation in the Apache Ossie (formerly Open Semantic Interchange) record; evidence VERIFIED.

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://github.com/apache/ossie/tree/main/converters/databricks)

- [Read](/category/read/)Observed 2026-09-05 [Ossie converters: dbt](https://github.com/apache/ossie/tree/main/converters/dbt) Listed as an implementation in the Apache Ossie (formerly Open Semantic Interchange) record; evidence VERIFIED.

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://github.com/apache/ossie/tree/main/converters/dbt)

- [Read](/category/read/)Observed 2026-09-05 [Ossie converters: GoodData](https://github.com/apache/ossie/tree/main/converters/gooddata) Listed as an implementation in the Apache Ossie (formerly Open Semantic Interchange) record; evidence VERIFIED.

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://github.com/apache/ossie/tree/main/converters/gooddata)

- [Read](/category/read/)Observed 2026-09-05 [Ossie converters: Salesforce](https://github.com/apache/ossie/tree/main/converters/salesforce) Listed as an implementation in the Apache Ossie (formerly Open Semantic Interchange) record; evidence VERIFIED.

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://github.com/apache/ossie/tree/main/converters/salesforce)

- [Read](/category/read/)Observed 2026-09-05 [Ossie converters: Snowflake](https://github.com/apache/ossie/tree/main/converters/snowflake) Listed as an implementation in the Apache Ossie (formerly Open Semantic Interchange) record; evidence VERIFIED.

 [Apache Ossie (formerly Open Semantic Interchange)](/protocols/osi/) · [source](https://github.com/apache/ossie/tree/main/converters/snowflake)

- [Act](/category/act/)Observed 2026-03-18 [OTA Technologies (Web Agent Protocol MCP server)](https://github.com/OTA-Tech-AI/web-agent-protocol) The protocol's own creator runs a live MCP server generated from recorded browser sessions (WAP-Replay); no independent third-party adopters were found. Evidence REPORTED (third-party security-scan listing).

 [Web Agent Protocol (WAP)](/protocols/web-agent-protocol/) · [source](https://agentseal.org/mcp/https-githubcom-ota-tech-ai-web-agent-protocol)

- [Permit](/category/permit/)Recorded 2026-09-06 [Perplexity crawlers (PerplexityBot, Perplexity-User)](https://docs.perplexity.ai/guides/bots) Listed as an implementation in the AI Crawler User-Agent Tokens in robots.txt record; evidence VERIFIED.

 [AI Crawler User-Agent Tokens in robots.txt](/protocols/ai-crawler-tokens-robots/) · [source](https://docs.perplexity.ai/guides/bots)

- [Act](/category/act/)Recorded 2026-09-06 [Prebid Sales Agent (community example, Prebid working group)](https://docs.adcontextprotocol.org/) Listed as an implementation in the Ad Context Protocol record; evidence VERIFIED.

 [Ad Context Protocol](/protocols/adcp/) · [source](https://docs.adcontextprotocol.org/)

- [Pay](/category/pay/)Recorded 2026-09-06 [PyMPP (Python)](https://mpp.dev) Listed as an implementation in the Machine Payments Protocol record; evidence REPORTED.

 [Machine Payments Protocol](/protocols/mpp/) · [source](https://mpp.dev)

- [Pay](/category/pay/)Observed 2026-03-12 [qntx/market-contract](https://github.com/qntx/market-contract) Gas-optimized, actively maintained (commits through Aug 2026) Solidity implementation of the ERC-8183 job/escrow/evaluator state machine, published by QuantX - evidence VERIFIED

 [ERC-8183: Agentic Commerce](/protocols/erc-8183/) · [source](https://github.com/qntx/market-contract)

- [Account](/category/account/)Observed 2026-04-01 [Rako](https://rako.sh) Rako HQ Ltd operates a live commercial 'commission rail for AI agents' platform built on the Agent Attribution Protocol (AAP), the spec's own first production deployment; evidence VERIFIED.

 [Agent Attribution Protocol](/protocols/agent-attribution-protocol/) · [source](https://rako.sh/privacy)

- [Account](/category/account/)Observed 2026-09-05 [Rako AAP platform (api.rako.sh)](https://rako.sh/docs) Listed as an implementation in the Agent Attribution Protocol record; evidence VERIFIED.

 [Agent Attribution Protocol](/protocols/agent-attribution-protocol/) · [source](https://rako.sh/docs)

- [Permit](/category/permit/)Observed 2026-04-12 [RAMS reference implementation and test suite (IAgentMandate, IComplianceProvider, RamsGated)](https://eips.ethereum.org/EIPS/eip-8226) Listed as an implementation in the ERC-8226 Regulated Agent Mandate record; evidence REPORTED.

 [ERC-8226 Regulated Agent Mandate](/protocols/erc-8226/) · [source](https://eips.ethereum.org/EIPS/eip-8226)

- [Discover](/category/discover/)Observed 2026-07-05 [Ronu (laravel-agent-protocol)](https://packalyst.com/packages/package/ronu/laravel-agent-protocol) Independent third-party Composer package implementing the Agent Discovery Protocol for Laravel APIs. evidence VERIFIED

 [Agent Discovery Protocol](/protocols/adp/) · [source](https://packalyst.com/packages/package/ronu/laravel-agent-protocol)

- [Act](/category/act/)Recorded 2026-09-06 [Roo Code](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Pay](/category/pay/)Observed 2026-09-04 [s402-protocol/core (TypeScript reference, npm package s402)](https://github.com/s402-protocol/core) Listed as an implementation in the s402 record; evidence VERIFIED.

 [s402](/protocols/s402/) · [source](https://github.com/s402-protocol/core)

- [Pay](/category/pay/)Observed 2026-09-02 [Salesforce Commerce (PWA Kit Managed Runtime)](https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/ucp-index.html) Salesforce ships a GA UCP implementation in its Commerce PWA Kit so merchants can be discovered and sold to via Google's UCP-supporting surfaces while remaining merchant of record - evidence VERIFIED

 [Universal Commerce Protocol](/protocols/ucp/) · [source](https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/ucp-index.html)

- [Pay](/category/pay/)Observed 2026-04-02 [Satgate](https://satgate.io) Satgate offers L402-based API payment gating combining Lightning invoices with macaroon proof-of-payment tokens - evidence VERIFIED

 [L402](/protocols/l402/) · [source](https://satgate.io/blog/l402-protocol-explained)

- [Permit](/category/permit/)Observed 2026-06-01 [secretless-ai (opena2a-org)](https://github.com/opena2a-org/secretless-ai) Secrets-management tool for AI coding agents shipped an AAP v1 Exchange broker (RFC 8693) in a merged commit, evidence VERIFIED.

 [Agent Authorization Profile](/protocols/aap/) · [source](https://github.com/opena2a-org/secretless-ai/commit/055bbbf92f1c451bca93c6f8515fe1c02a917b84)

- [Coordinate](/category/coordinate/)Observed 2026-09-05 [Seller Agent SDK](https://github.com/IABTechLab/seller-agent) Listed as an implementation in the Agentic Advertising Management Protocols record; evidence VERIFIED.

 [Agentic Advertising Management Protocols](/protocols/aamp/) · [source](https://github.com/IABTechLab/seller-agent)

- [Pay](/category/pay/)Observed 2026-04-20 [ShinyDapps l402-kit](https://github.com/ShinyDapps/l402-kit) Open-source TypeScript/Python/Go/Rust toolkit that adds Bitcoin Lightning pay-per-call gating to any API using L402, published on npm - evidence VERIFIED

 [L402](/protocols/l402/) · [source](https://github.com/ShinyDapps/l402-kit)

- [Act](/category/act/)Recorded 2026-09-06 [Snowflake Cortex Code](https://agentskills.io) Listed as an adopter in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Identify](/category/identify/)Recorded 2026-09-06 [SPIRE](https://spiffe.io/docs/latest/spiffe-about/overview/) Listed as an implementation in the SPIFFE (Secure Production Identity Framework for Everyone) record; evidence VERIFIED.

 [SPIFFE (Secure Production Identity Framework for Everyone)](/protocols/spiffe/) · [source](https://spiffe.io/docs/latest/spiffe-about/overview/)

- [Act](/category/act/)Recorded 2026-09-06 [Spring AI](https://agentskills.io) Listed as an adopter in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Act](/category/act/)Recorded 2026-09-06 [StreamHaus (illustrative example publisher in AdCP's own walkthrough docs)](https://docs.adcontextprotocol.org/) Listed as an adopter in the Ad Context Protocol record; evidence THIN.

 [Ad Context Protocol](/protocols/adcp/) · [source](https://docs.adcontextprotocol.org/)

- [Pay](/category/pay/)Recorded 2026-09-06 [Stripe Agentic Commerce](https://docs.stripe.com/agentic-commerce) Listed as an implementation in the Agentic Commerce Protocol record; evidence REPORTED.

 [Agentic Commerce Protocol](/protocols/agentic-commerce-protocol/) · [source](https://docs.stripe.com/agentic-commerce)

- [Pay](/category/pay/)Observed 2026-04-26 [SweeFi](https://github.com/sweeinc/platform/tree/main/products/sweefi/sui) SweeFi ships client, facilitator, and server support for the s402 scheme in its published @sweefi/sui npm package (repo migrated from sweeinc/sweefi, archived but browsable, to sweeinc/platform) - evidence VERIFIED

 [s402](/protocols/s402/) · [source](https://registry.npmjs.org/@sweefi/sui)

- [Act](/category/act/)Recorded 2026-09-06 [VS Code](https://agentskills.io) Listed as an implementation in the Agent Skills record; evidence VERIFIED.

 [Agent Skills](/protocols/anthropic-agent-skills-format/) · [source](https://agentskills.io)

- [Act](/category/act/)Recorded 2026-09-06 [VS Code GitHub Copilot](https://modelcontextprotocol.io/docs/extensions/apps) Listed as an implementation in the Model Context Protocol record; evidence VERIFIED.

 [Model Context Protocol](/protocols/mcp/) · [source](https://modelcontextprotocol.io/docs/extensions/apps)

- [Identify](/category/identify/)Observed 2026-04-13 [wba (managed Web Bot Auth directory server)](https://github.com/calvernaz/wba) Open-source server that hosts JWKS/signature-agent-card key directories on behalf of registered agents so they don't need to self-host; evidence VERIFIED.

 [Signature Agent Card (Web Bot Auth registry)](/protocols/web-bot-auth-signature-agent-card/), [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://github.com/calvernaz/wba)

- [Identify](/category/identify/)Recorded 2026-09-06 [web-bot-auth-apache (Apache module, C)](https://github.com/garyillyes/web-bot-auth-apache) Listed as an implementation in the Web Bot Auth HTTP Message Signatures record; evidence REPORTED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://github.com/garyillyes/web-bot-auth-apache)

- [Identify](/category/identify/)Recorded 2026-09-06 [web-bot-auth-example (Puppeteer script)](https://github.com/stytchauth/web-bot-auth-example) Listed as an implementation in the Web Bot Auth HTTP Message Signatures record; evidence REPORTED.

 [Web Bot Auth HTTP Message Signatures](/protocols/webbotauth/) · [source](https://github.com/stytchauth/web-bot-auth-example)

- [Permit](/category/permit/)Observed 2026-05-21 [WorkOS (AuthKit Agent Registration)](https://workos.com/blog/agent-registration-with-auth-md) WorkOS published auth.md and shipped AuthKit's Agent Registration feature implementing it end to end (discover, register, get claimed by a user). evidence VERIFIED

 [auth.md](/protocols/auth-md/) · [source](https://workos.com/blog/agent-registration-with-auth-md)

- [Permit](/category/permit/)Observed 2026-09-03 [WorkOS (MCP authorization)](https://workos.com/blog/what-is-mcp-authorization) WorkOS documents and ships MCP server authorization built on RFC 9728 protected resource metadata for agent OAuth flows. evidence REPORTED

 [OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization)](/protocols/oauth-metadata-for-agents/) · [source](https://workos.com/blog/what-is-mcp-authorization)

- [Permit](/category/permit/)Observed 2026-07-30 [WorkOS AuthKit](https://workos.com/blog/build-stateless-mcp-server-2026-07-28-authkit) AuthKit serves as the OAuth 2.1 authorization server (RFC 9728 protected resource metadata) securing MCP servers, evidence VERIFIED (own guide).

 [OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization)](/protocols/oauth-metadata-for-agents/) · [source](https://workos.com/blog/build-stateless-mcp-server-2026-07-28-authkit)

- [Act](/category/act/)Recorded 2026-09-06 [Zed editor](https://agentclientprotocol.com/get-started/introduction) Listed as an implementation in the Agent Client Protocol record; evidence VERIFIED.

 [Agent Client Protocol](/protocols/agent-client-protocol/) · [source](https://agentclientprotocol.com/get-started/introduction)

## Sites 55

- [Identify](/category/identify/)Observed 2026-01-29 [8004.org project site](https://www.8004.org/blog/welcome-to-8004) Listed as an adopter in the ERC-8004: Trustless Agents record; evidence REPORTED.

 [ERC-8004: Trustless Agents](/protocols/erc-8004/) · [source](https://www.8004.org/blog/welcome-to-8004)

- [Discover](/category/discover/)Observed 2026-09-04 [agenticresources.dev probe (31/50 domains serving a manifest, all on ai-catalog.json, 6 also on ard.json)](https://agenticresources.dev/) Listed as an adopter in the Agentic Resource Discovery record; evidence REPORTED.

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://agenticresources.dev/)

- [Discover](/category/discover/)Observed 2026-09-06 [agenticweb.wiki](https://agenticweb.wiki/.well-known/ard.json) Our own site, checked by our own probe rules at build time (tests/test_self_probe.py).

 [Agentic Resource Discovery](/protocols/ard/), [AI Catalog well-known file](/protocols/ai-catalog-well-known-file/) · [source](https://agenticweb.wiki/data/probes.json)

- [Read](/category/read/)Observed 2026-09-06 [agenticweb.wiki](https://agenticweb.wiki/llms.txt) llms.txt, llms-full.txt, sitemap.md, AGENTS.md and Markdown twins served; checked by our own rules at build time.

 [llms.txt](/protocols/llms-txt/), [Agent Readability Spec](/protocols/vercel-agent-readability/) · [source](https://agenticweb.wiki/data/probes.json)

- [Discover](/category/discover/)Observed 2026-09-06 [agenticweb.wiki](https://agenticweb.wiki/.well-known/api-catalog) RFC 9727 api-catalog linkset pointing at openapi.json.

 [api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs](/protocols/api-catalog-rfc9727/) · [source](https://agenticweb.wiki/data/probes.json)

- [Pay](/category/pay/)Observed 2026-06-10 [Agora Marketplace](https://agoraproto.org) Live testnet marketplace (295 jobs completed, 48.72 USDC settled on-chain as of read) where agents discover, hire, pay and review each other via HTTP-402 escrow on Base Sepolia - evidence VERIFIED

 [Agora (agent marketplace protocol)](/protocols/agora-commerce-protocol/) · [source](https://github.com/agoraproto/agora)

- [Read](/category/read/)Recorded 2026-09-06 [Aider](https://aider.chat/docs/usage/conventions.html#always-load-conventions) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://aider.chat/docs/usage/conventions.html#always-load-conventions)

- [Read](/category/read/)Recorded 2026-09-06 [AIOSEO (WordPress plugin with an llms.txt generator)](https://aioseo.com/features/llms-txt/) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://aioseo.com/features/llms-txt/)

- [Read](/category/read/)Recorded 2026-09-06 [Amp](https://ampcode.com/) Listed as an implementation in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://ampcode.com/)

- [Read](/category/read/)Recorded 2026-09-06 [Anthropic docs llms.txt](https://docs.anthropic.com/llms.txt) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://docs.anthropic.com/llms.txt)

- [Read](/category/read/)Recorded 2026-09-06 [apache/airflow](https://github.com/apache/airflow/blob/-/AGENTS.md) Listed as an adopter in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://github.com/apache/airflow/blob/-/AGENTS.md)

- [Read](/category/read/)Recorded 2026-09-06 [Augment Code](https://docs.augmentcode.com/cli/overview) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://docs.augmentcode.com/cli/overview)

- [Permit](/category/permit/)Recorded 2026-09-06 [auth-md.com specification and reference skill](https://auth-md.com/specification) Listed as an implementation in the auth.md record; evidence VERIFIED.

 [auth.md](/protocols/auth-md/) · [source](https://auth-md.com/specification)

- [Read](/category/read/)Recorded 2026-09-06 [Bitcoin public-dataset sample bundle (Google-produced)](https://github.com/GoogleCloudPlatform/open-knowledge-format) Listed as an adopter in the Open Knowledge Format record; evidence VERIFIED.

 [Open Knowledge Format](/protocols/okf/) · [source](https://github.com/GoogleCloudPlatform/open-knowledge-format)

- [Permit](/category/permit/)Recorded 2026-09-06 [Cloudflare](https://cloudflare.com/auth.md) Listed as an adopter in the auth.md record; evidence REPORTED.

 [auth.md](/protocols/auth-md/) · [source](https://cloudflare.com/auth.md)

- [Read](/category/read/)Recorded 2026-09-06 [Cursor](https://cursor.com/) Listed as an implementation in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://cursor.com/)

- [Read](/category/read/)Recorded 2026-09-06 [Devin (Cognition)](https://devin.ai/) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://devin.ai/)

- [Discover](/category/discover/)Observed 2026-07-23 [Dries Buytaert (dri.es)](https://dri.es/helping-agents-discover-my-site-search-with-agentic-resource-discovery) Personal site owner's own post describing publishing an ai-catalog.json for ARD on his domain to be found by agents. evidence VERIFIED

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://dri.es/helping-agents-discover-my-site-search-with-agentic-resource-discovery)

- [Discover](/category/discover/)Observed 2026-07-22 [Dries Buytaert (dri.es) api-catalog](https://dri.es/helping-agents-discover-my-site-search-with-an-api-catalog) Personal site owner's own post on adding /.well-known/api-catalog per RFC 9727 so agents can find his site search API. evidence VERIFIED

 [api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs](/protocols/api-catalog-rfc9727/) · [source](https://dri.es/helping-agents-discover-my-site-search-with-an-api-catalog)

- [Read](/category/read/)Recorded 2026-09-06 [Factory](https://factory.ai/) Listed as an implementation in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://factory.ai/)

- [Read](/category/read/)Recorded 2026-09-06 [FastHTML / Answer.AI docs (reference implementation cited by the spec itself)](https://www.fastht.ml/docs/llms.txt) Listed as an adopter in the llms.txt record; evidence VERIFIED.

 [llms.txt](/protocols/llms-txt/) · [source](https://www.fastht.ml/docs/llms.txt)

- [Permit](/category/permit/)Recorded 2026-09-06 [Firecrawl](https://firecrawl.dev/auth.md) Listed as an adopter in the auth.md record; evidence REPORTED.

 [auth.md](/protocols/auth-md/) · [source](https://firecrawl.dev/auth.md)

- [Read](/category/read/)Recorded 2026-09-06 [GA4 e-commerce sample bundle (Google-produced)](https://github.com/GoogleCloudPlatform/open-knowledge-format) Listed as an adopter in the Open Knowledge Format record; evidence VERIFIED.

 [Open Knowledge Format](/protocols/okf/) · [source](https://github.com/GoogleCloudPlatform/open-knowledge-format)

- [Read](/category/read/)Recorded 2026-09-06 [GitBook (serves an llms.txt for published docs sites)](https://www.gitbook.com/blog/what-is-llms-txt) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://www.gitbook.com/blog/what-is-llms-txt)

- [Read](/category/read/)Recorded 2026-09-06 [GitHub Copilot coding agent](https://gh.io/coding-agent-docs) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://gh.io/coding-agent-docs)

- [Read](/category/read/)Recorded 2026-09-06 [Google Cloud Knowledge Catalog (updated to ingest and serve OKF to agents)](https://cloud.google.com/blog/products/data-analytics/introducing-the-google-cloud-knowledge-catalog) Listed as an implementation in the Open Knowledge Format record; evidence REPORTED.

 [Open Knowledge Format](/protocols/okf/) · [source](https://cloud.google.com/blog/products/data-analytics/introducing-the-google-cloud-knowledge-catalog)

- [Read](/category/read/)Recorded 2026-09-06 [Google Gemini API docs llms.txt](https://ai.google.dev/gemini-api/docs/llms.txt) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://ai.google.dev/gemini-api/docs/llms.txt)

- [Read](/category/read/)Recorded 2026-09-06 [Google Jules](https://jules.google/) Listed as an implementation in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://jules.google/)

- [Read](/category/read/)Recorded 2026-09-06 [goose (Block)](https://github.com/block/goose) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://github.com/block/goose)

- [Discover](/category/discover/)Observed 2026-09-04 [Hugging Face (ard/ai-catalog manifest at huggingface.co)](https://huggingface.co/.well-known/ai-catalog.json) Serves an ARD manifest at /.well-known/ai-catalog.json; recorded by the publisher probe of 50 domains and re-fetched on 2026-09-06.

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://agenticresources.dev/)

- [Read](/category/read/)Recorded 2026-09-06 [JetBrains Junie](https://jetbrains.com/junie) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://jetbrains.com/junie)

- [Read](/category/read/)Recorded 2026-09-06 [Kilo Code](https://kilocode.ai/) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://kilocode.ai/)

- [Permit](/category/permit/)Observed 2026-04-23 [mcp-shark/aauth-explorer](https://github.com/mcp-shark/aauth-explorer) Interactive knowledge graph visualizing 72 AAuth protocol flows, evidence VERIFIED.

 [Agent Authorization Grant](/protocols/aauth/) · [source](https://github.com/mcp-shark/aauth-explorer)

- [Act](/category/act/)Observed 2026-06-05 [Microsoft News (NLWeb live endpoint)](https://byteiota.com/nlweb-mcp-ai-ready-websites/) Runs a live NLWeb /ask endpoint cited as a working demo of the protocol; evidence REPORTED.

 [NLWeb](/protocols/nlweb/) · [source](https://byteiota.com/nlweb-mcp-ai-ready-websites/)

- [Read](/category/read/)Recorded 2026-09-06 [Mintlify (auto-generates llms.txt and markdown page twins for hosted docs sites)](https://www.mintlify.com/docs/ai/llmstxt) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://www.mintlify.com/docs/ai/llmstxt)

- [Read](/category/read/)Recorded 2026-09-06 [OpenAI Codex](https://openai.com/codex/) Listed as an implementation in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://openai.com/codex/)

- [Read](/category/read/)Recorded 2026-09-06 [OpenAI developer docs llms.txt](https://developers.openai.com/llms.txt) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://developers.openai.com/llms.txt)

- [Read](/category/read/)Recorded 2026-09-06 [openai/codex](https://github.com/openai/codex/blob/-/AGENTS.md) Listed as an adopter in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://github.com/openai/codex/blob/-/AGENTS.md)

- [Read](/category/read/)Recorded 2026-09-06 [opencode](https://opencode.ai/docs/rules/) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://opencode.ai/docs/rules/)

- [Read](/category/read/)Recorded 2026-09-06 [Reference enrichment agent (BigQuery-to-OKF, proof of concept)](https://github.com/GoogleCloudPlatform/open-knowledge-format) Listed as an implementation in the Open Knowledge Format record; evidence VERIFIED.

 [Open Knowledge Format](/protocols/okf/) · [source](https://github.com/GoogleCloudPlatform/open-knowledge-format)

- [Permit](/category/permit/)Recorded 2026-09-06 [Resend](https://resend.com/auth.md) Listed as an adopter in the auth.md record; evidence REPORTED.

 [auth.md](/protocols/auth-md/) · [source](https://resend.com/auth.md)

- [Read](/category/read/)Recorded 2026-09-06 [RooCode](https://roocode.com/) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://roocode.com/)

- [Discover](/category/discover/)Observed 2026-07-03 [skillsandagents.co](https://edakrong.com/skillsandagents-agentic-resource-discovery/) Site owner's own writeup of adding ARD endpoints alongside its existing Markdown Agent Mode directory. evidence VERIFIED

 [Agentic Resource Discovery](/protocols/ard/) · [source](https://edakrong.com/skillsandagents-agentic-resource-discovery/)

- [Read](/category/read/)Recorded 2026-09-06 [Stack Overflow sample bundle (Google-produced)](https://github.com/GoogleCloudPlatform/open-knowledge-format) Listed as an adopter in the Open Knowledge Format record; evidence VERIFIED.

 [Open Knowledge Format](/protocols/okf/) · [source](https://github.com/GoogleCloudPlatform/open-knowledge-format)

- [Read](/category/read/)Recorded 2026-09-06 [Static HTML graph visualizer (Cytoscape.js + marked, proof of concept)](https://github.com/GoogleCloudPlatform/open-knowledge-format) Listed as an implementation in the Open Knowledge Format record; evidence VERIFIED.

 [Open Knowledge Format](/protocols/okf/) · [source](https://github.com/GoogleCloudPlatform/open-knowledge-format)

- [Read](/category/read/)Recorded 2026-09-06 [temporalio/sdk-java](https://github.com/temporalio/sdk-java/blob/-/AGENTS.md) Listed as an adopter in the AGENTS.md record; evidence VERIFIED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://github.com/temporalio/sdk-java/blob/-/AGENTS.md)

- [Read](/category/read/)Recorded 2026-09-06 [VS Code](https://code.visualstudio.com/docs/editor/artificial-intelligence) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://code.visualstudio.com/docs/editor/artificial-intelligence)

- [Read](/category/read/)Recorded 2026-09-06 [Warp](https://docs.warp.dev/knowledge-and-collaboration/rules#project-scoped-rules-1) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://docs.warp.dev/knowledge-and-collaboration/rules#project-scoped-rules-1)

- [Permit](/category/permit/)Observed 2026-06-02 [webhooks.cc](https://webhooks.cc/blog/ai-agents-self-register-auth-md) webhooks.cc's own post states it now implements auth.md, letting AI coding agents self-register for an API key through three flows. evidence VERIFIED

 [auth.md](/protocols/auth-md/) · [source](https://webhooks.cc/blog/ai-agents-self-register-auth-md)

- [Act](/category/act/)Recorded 2026-09-06 [Wildcard Bridge (Python reference runtime: load, parse, run agents.json flows)](https://github.com/wild-card-ai/agents-json) Listed as an implementation in the agents.json record; evidence VERIFIED.

 [agents.json](/protocols/agents-json/) · [source](https://github.com/wild-card-ai/agents-json)

- [Read](/category/read/)Recorded 2026-09-06 [Windsurf (Cognition)](https://windsurf.com/) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://windsurf.com/)

- [Read](/category/read/)Recorded 2026-09-06 [Wix (generates an llms.txt for every Wix site)](https://support.wix.com/en/article/understanding-your-sites-llmstxt-file) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://support.wix.com/en/article/understanding-your-sites-llmstxt-file)

- [Permit](/category/permit/)Recorded 2026-09-06 [WorkOS](https://workos.com/auth.md) Listed as an adopter in the auth.md record; evidence REPORTED.

 [auth.md](/protocols/auth-md/) · [source](https://workos.com/auth.md)

- [Read](/category/read/)Recorded 2026-09-06 [Yoast SEO (WordPress plugin, generates and maintains llms.txt)](https://yoast.com/features/llms-txt/) Listed as an implementation in the llms.txt record; evidence REPORTED.

 [llms.txt](/protocols/llms-txt/) · [source](https://yoast.com/features/llms-txt/)

- [Read](/category/read/)Recorded 2026-09-06 [Zed](https://zed.dev/docs/ai/instructions) Listed as an implementation in the AGENTS.md record; evidence REPORTED.

 [AGENTS.md](/protocols/agents-md/) · [source](https://zed.dev/docs/ai/instructions)

[JSON](/instances/index.json)

## Probed origins

Every origin our MCP probe has checked, with what it found. Probed origins are whoever was asked about, not a sample; every count on this site is a floor, not a rate. Census generated 2026-09-04.

| Origin | Checked | Found |
| --- | --- | --- |
| 2s.io | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| agenticresourcediscovery.org | 2026-09-04 |  |
| airtable.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| amplitude.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| anthropic.com | 2026-09-04 |  |
| api.mcp.github.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| apify.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| aws.amazon.com | 2026-09-04 |  |
| bird.com | 2026-09-04 | [ard](/protocols/ard/), [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| cisco.com | 2026-09-04 |  |
| clickhouse.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| cloudflare.com | 2026-09-04 |  |
| databricks.com | 2026-09-04 |  |
| desvela.dev | 2026-09-04 | [ard](/protocols/ard/), [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| developers.cloudflare.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| eodly.io | 2026-09-04 | [ard](/protocols/ard/), [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| fly.io | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| getlago.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| github.com | 2026-09-04 |  |
| godaddy.com | 2026-09-04 |  |
| google.com | 2026-09-04 |  |
| gtmetrix.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| hostinger.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| huggingface.co | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| img.ly | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| loops.so | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| microsoft.com | 2026-09-04 |  |
| neon.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| neuronto.com | 2026-09-04 | [ard](/protocols/ard/), [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| nextjs.org | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| notion.so | 2026-09-04 |  |
| nvidia.com | 2026-09-04 |  |
| openai.com | 2026-09-04 |  |
| padlet.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| publica.la | 2026-09-04 | [ard](/protocols/ard/), [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| quicknode.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| railway.com | 2026-09-04 | [ard](/protocols/ard/), [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| roboflow.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| rudderstack.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| salesforce.com | 2026-09-04 |  |
| servicenow.com | 2026-09-04 |  |
| shopify.com | 2026-09-04 |  |
| slack.com | 2026-09-04 |  |
| snowflake.com | 2026-09-04 |  |
| speakeasy.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| stripe.com | 2026-09-04 |  |
| surrealdb.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| telnyx.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| vercel.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |
| zapier.com | 2026-09-04 | [ai-catalog-well-known-file](/protocols/ai-catalog-well-known-file/) |