Changelog

Every recorded change to every standard on this map, newest first.

2026-09-07 — ERC-8004: Trustless Agents — added the arXiv 2606.26028 empirical study on live endpoints and Sybil feedback
2026-09-07 — Content Signals Policy — added Google's 2026-07-06 statement that no crawler honours the directive (Search Engine Roundtable, Search Engine Journal)
2026-09-07 — Natural Language Interaction Protocol — created and verified against Ecma International ECMA-430 standard page, the NLIP arXiv paper (2609.04135, Sept 2026), nlip-project.org, an Enterprise Neurosystem blog post on Ecma recognition, and the nlip-project GitHub org's reference implementation repos
2026-09-07 — EMV Agentic Payments – Framework for Specifications — created and verified against EMVCo's 2026-09-01 news release, the companion EMV Insights article by Clinton Allen, independent trade press (fintech.global, 2026-09-04), and the EMVCo overview page
2026-09-07 — Identity Assertion JWT Authorization Grant — created and verified against datatracker.ietf.org/doc/draft-ietf-oauth-identity-assertion-authz-grant/ (rev -04, 2026-05-21), xaa.dev, and vendor implementation announcements from Okta, Auth0 and Descope
2026-09-07 — AI Agent Authentication and Authorization (AIMS) — created from IETF datatracker (draft-klrc-aiagent-auth-03), WIMSE WG document list, and reporting on the 2026-08-24 WIMSE adoption call
2026-09-07 — DNS-Based Agent Naming — created as a new discover-step record; verified against draft-seethiraju-dawn-dan-00 (datatracker.ietf.org), the verisign/dan proof-of-concept repository, and Verisign's 2026-09-01 blog announcement
2026-09-06 — Model Context Protocol — verified against modelcontextprotocol.io/specification/2026-07-28, github.com/modelcontextprotocol/experimental-ext-server-card, github.com/modelcontextprotocol/registry, modelcontextprotocol.io/docs/2026-07-28/sdk, modelcontextprotocol.io/docs/extensions/apps, en.wikipedia.org/wiki/Model_Context_Protocol, workos.com MCP-2026 blog
2026-09-06 — Agent2Agent Protocol — verified against a2a-protocol.org/latest/specification/, github.com/a2aproject/A2A README and agent-discovery.md, and the LF/A2A one-year press release (prnewswire)
2026-09-06 — Agent Client Protocol — verified against agentclientprotocol.com/get-started/introduction, agentclientprotocol.com/updates, agentclientprotocol.com/rfds/about
2026-09-06 — Agent Client Protocol — collisions updated to add Agent Connect Protocol (Cisco/AGNTCY), verified against github.com/agntcy/acp-spec, spec.acp.agntcy.org
2026-09-06 — Agent Communication Protocol — verified against github.com/i-am-bee/acp (archived banner, archive date) and its OpenAPI spec; set phase withdrawn per Ruling 11 as merged into A2A
2026-09-06 — Agent Communication Protocol — collisions updated to add Agent Connect Protocol (Cisco/AGNTCY), verified against github.com/agntcy/acp-spec, spec.acp.agntcy.org
2026-09-06 — Agentic Commerce Protocol — verified against agentic-commerce-protocol GitHub repo (README, docs/governance.md, MAINTAINERS.md, spec/2026-04-17), developers.openai.com/commerce, docs.stripe.com/agentic-commerce
2026-09-06 — Agentic Commerce Protocol — collisions updated to add Agent Connect Protocol (Cisco/AGNTCY), verified against github.com/agntcy/acp-spec, spec.acp.agntcy.org
2026-09-06 — Universal Commerce Protocol — verified against ucp.dev (home, core-concepts), Universal-Commerce-Protocol/ucp README, and Universal-Commerce-Protocol/.github MAINTAINERS.md / GOVERNANCE.md
2026-09-06 — Agent Payments Protocol — verified against google-agentic-commerce/AP2 (README, CONTRIBUTING.md, docs/ap2/specification.md, docs/ap2/checkout_mandate.md) and Google Cloud blog launch announcement; folded in ap2-checkout-mandate as a component rather than a separate protocol
2026-09-06 — AP2 Checkout Mandate — verified: confirmed this is a component of ap2's specification.md, not a distinct protocol; set phase=withdrawn and merged content into ap2
2026-09-06 — x402 — verified against x402.org (homepage, /announcement), x402-foundation/x402 specs/transports-v2/http.md
2026-09-06 — L402 — verified against lightninglabs/L402 README.md and protocol-specification.md on GitHub
2026-09-06 — Machine Payments Protocol — verified against mpp.dev (homepage, /protocol, /governance)
2026-09-06 — ERC-8004: Trustless Agents — verified against EIP-8004 primary text, Forbes mainnet-launch report (2026-02-05), and community deployment tracker (awesome-erc8004)
2026-09-06 — ERC-8183: Agentic Commerce — verified against eips.ethereum.org/EIPS/eip-8183; flagged name collision with agentic-commerce-protocol (ACP)
2026-09-06 — ERC-8226 Regulated Agent Mandate — verified against eips.ethereum.org/EIPS/eip-8226 and github.com/ethereum/ERCs/pull/1844
2026-09-06 — WebMCP — verified against webmachinelearning.github.io/webmcp (4 Sept 2026 draft) and developer.chrome.com/docs/ai/webmcp (updated 2026-08-07); Cloudflare BrowserRun claim dropped, unverified in this pass
2026-09-06 — NLWeb — verified against github.com/microsoft/NLWeb (redirects to github.com/nlweb-ai/NLWeb); nlweb.ai/spec confirmed unreachable via curl and firecrawl
2026-09-06 — Agent Skills — verified against agentskills.io and agentskills.io/specification
2026-09-06 — llms.txt — verified against llmstxt.org (v2, Aug 2026), llmstxt.org/changes.html, Google's AI optimization guide, and three independent third-party adoption studies (Rankability, SE Ranking, Ahrefs)
2026-09-06 — AGENTS.md — verified against agents.md, OpenAI's harness-engineering post, and a secondary account of the August 2025 launch
2026-09-06 — AIPREF Content-Usage Attachment — verified against ietf.org/archive/id/draft-ietf-aipref-attach-05.html
2026-09-06 — AIPREF Vocabulary — verified against datatracker.ietf.org/doc/html/draft-ietf-aipref-vocab-07
2026-09-06 — Text and Data Mining Reservation Protocol — verified against w3.org/community/reports/tdmrep/CG-FINAL-tdmrep-20240510/
2026-09-06 — Content Signals Policy — verified against blog.cloudflare.com/content-signals-policy/
2026-09-06 — Web Bot Auth HTTP Message Signatures — verified against draft-meunier-webbotauth-httpsig-protocol-00, its WG-adopted successor draft-ietf-webbotauth-httpsig-protocol-00 (2026-09-01), and Cloudflare's Web Bot Auth integration docs
2026-09-06 — Signature Agent Card (Web Bot Auth registry) — verified against draft-meunier-webbotauth-registry-03 primary text and its current datatracker status page
2026-09-06 — HTTP Message Signatures — verified against RFC 9421 primary source and confirmed as the base standard profiled by Web Bot Auth
2026-09-06 — Agentic Resource Discovery — verified against ARD v0.91 spec text (raw.githubusercontent.com/ards-project/ard-spec/main/spec/ard.md); corrected canonical path from ai-catalog.json to ard.json; folded ai-catalog-well-known-file into this record
2026-09-06 — AI Catalog well-known file — merged into ard: confirmed via ARD v0.91 spec text that ai-catalog.json is ARD's own deprecated predecessor path, not a separate specification
2026-09-06 — AI Catalog well-known file — fix round 1: added second evidence entry (Google ARD launch blog post, fetched directly) to satisfy the two-evidence gate
2026-09-06 — DNS for AI Discovery — verified against draft-mozleywilliams-dnsop-dnsaid-02 spec text via datatracker.ietf.org
2026-09-06 — Agent Name Service v2 (ANS) — verified against draft-narajala-courtney-ansv2-01 primary text and the GoDaddy/Infoblox press release
2026-09-06 — Agent Identity and Discovery — verified against AID v2.1.0 spec text via raw.githubusercontent.com
2026-09-06 — Agent Identity and Discovery — fix round 1: added second evidence entry (agentcommunity GitHub repo, fetched directly) showing real published multi-language packages; upgraded implementation unknown -> shipping and adoption unmeasured -> observed on that basis
2026-09-06 — Agent Discovery Protocol — verified against draft-pro-adp-agent-discovery-02 spec text via datatracker.ietf.org
2026-09-06 — Agent Discovery Protocol — fix round 1: added second evidence entry (harrylian8766/adp-protocol reference implementation, fetched directly); upgraded implementation unknown -> prototype on that basis
2026-09-06 — Agent Registration and Discovery Protocol — verified against draft-pioli-agent-discovery-00 spec text via datatracker.ietf.org; noted draft expired 2026-08-05 with no successor found
2026-09-06 — Agent Registration and Discovery Protocol — fix round 1: fetched IETF Datatracker status page as second, independent evidence entry confirming Expired/archived state; corrected version/spec_url from -00 to the actual latest revision -01; set phase from unknown to withdrawn on the strength of the datatracker's own Expired status (resolves the phase-unknown gate without needing an explanatory sentence)
2026-09-06 — Agent Directory Service — verified against draft-mp-agntcy-ads-02 spec text via datatracker.ietf.org
2026-09-06 — Open Agentic Schema Framework — verified against live OASF schema browser at schema.oasf.outshift.com and cross-checked against draft-mp-agntcy-ads-02
2026-09-06 — A2UI (Agent to UI) Protocol — verified against a2ui.org v1.0 spec and github.com/a2ui-project/a2ui
2026-09-06 — Agent-User Interaction Protocol — verified against docs.ag-ui.com/introduction, github.com/ag-ui-protocol/ag-ui, and CopilotKit's original announcement
2026-09-06 — Apache Ossie (formerly Open Semantic Interchange) — verified against github.com/apache/ossie (README, core-spec/spec.md), incubator.apache.org/projects/ossie.html, and Snowflake's 2025-09-23 and 2026-01-27 posts; moved step from 'account' to 'read', corrected spec_url, name, governance, and version; flagged draft-vs-finalized dispute
2026-09-06 — Open Knowledge Format — verified against the OKF v0.2 SPEC.md, the original Google Cloud blog announcement, and the repo-migration notice in the old knowledge-catalog/okf directory
2026-09-06 — OpenAI Plugins (formerly Apps SDK) — verified against developers.openai.com/apps-sdk (redirects to /plugins), developers.openai.com/plugins/concepts/mcp-server, developers.openai.com/plugins/build/chatgpt-ui, modelcontextprotocol.io/docs/extensions/apps; name changed to reflect OpenAI's Apps SDK -> Plugins rebrand
2026-09-06 — Agentic Advertising Management Protocols — verified against iabtechlab.com/standards/aamp-agentic-advertising-management-protocols/, the 2026-07-30 AAMP 2.3 press release, and github.com/IABTechLab/AAMP; moved step from 'account' to 'coordinate'; flagged umbrella-program dispute and acronym collision with IETF AAP (Agent Authorization Profile)
2026-09-06 — Agentic Real Time Framework — verified against iabtechlab.com/standards/artf/, the 2025-11-13 launch press release, the 2026-08-12 milestone post, and github.com/IABTechLab/agentic-real-time-framework (README, internal/health, cmd/agent/main.go); moved step from 'account' to 'act'; filled probe, discovery, adoption=claimed
2026-09-06 — Ad Context Protocol — verified against docs.adcontextprotocol.org/dist/docs/3.1.20/intro
2026-09-06 — Visa Trusted Agent Protocol — verified against Visa's live merchant specification page and the 2025-10-14 launch announcement
2026-09-06 — Verifiable Intent — verified against mastercard.com/.../verifiable-intent.html (via firecrawl, curl 403s), verifiableintent.dev/spec/, and github.com/agent-intent/verifiable-intent README and spec/credential-format.md; corrected version date to 2026-02-18, origin.date to 2026-03-05, governance and scope; kept step=account
2026-09-06 — SPIFFE (Secure Production Identity Framework for Everyone) — verified against spiffe.io's own overview/ecosystem page and draft-klrc-aiagent-auth-03; corrected framing to make clear SPIFFE itself is agent-agnostic and the agent application is an outside proposal
2026-09-06 — Workload Identity in Multi System Environments (WIMSE) Architecture — verified against draft-ietf-wimse-arch-08's datatracker status page, confirming chartered WG status and 2026-07-06 update
2026-09-06 — Agent Authorization Grant — verified against datatracker.ietf.org/doc/html/draft-rosenberg-oauth-aauth; found expired
2026-09-06 — OAuth Profile for Delegated AI Agent Authorization — verified against datatracker.ietf.org/doc/html/draft-mishra-oauth-agent-grants-02; corrected name from seed
2026-09-06 — Agent Authorization Profile — verified against datatracker.ietf.org/doc/draft-aap-oauth-profile/ and github.com/aapspec/spec; found expired
2026-09-06 — Agent Identity Protocol (AIP) — verified against draft-singla-agent-identity-protocol-03's abstract, introduction and document header; flagged limited depth of review and the AIP acronym collision
2026-09-06 — Agent Transfer Protocol — verified against IETF datatracker and draft-hood-independent-agtp-09 (updated spec_url from -04 to current -09, dated 2026-06-28); no implementations found
2026-09-06 — VCAP: Verified Commerce for Agent Protocols — verified against datatracker.ietf.org/doc/draft-stone-vcap/ and the draft-stone-vcap-02 text; confirmed individual-submission, no-IETF-standing status
2026-09-06 — Agent Network Protocol — verified against agent-network-protocol.com and github.com/agent-network-protocol/AgentNetworkProtocol README + ANP-08 discovery spec; corrected version from v0.1/experimental to released v1.1 and filled discovery path
2026-09-06 — Agora Protocol — verified against agora-protocol paper-demo README, agora-protocol.github.io specs.html, and agoraproto.org's own disambiguation notice; confirmed distinct from agora-commerce-protocol
2026-09-06 — Agora (agent marketplace protocol) — verified against api.agoraproto.org openapi.json and .well-known manifests, and agoraproto.org homepage; moved step from coordinate to pay given its payments/escrow/marketplace scope; confirmed distinct project from agora-protocol (Oxford academic) via the project's own disambiguation notice
2026-09-06 — s402 — verified against s402-protocol/core (README.md, docs/specification.md) and GitHub repo metadata; corrected discovery mechanism from a nonexistent /.well-known/s402.json to the x402-envelope extensions.s402 signal
2026-09-06 — Agent Attribution Protocol — new record: found via search for post-hoc agent commerce attribution specs; verified against rako.sh/aap, rako.sh/docs, and github.com/rakohq/aap-spec (README, spec/v1/README.md); flagged as single-vendor 'open spec, closed operation' and acronym collision
2026-09-06 — Agent Audit Trail — new record: found via search for 'agent audit log standard'; verified against datatracker.ietf.org and the archived draft text (revision -03, 2026-09-05); no implementation found
2026-09-06 — Secure Low-Latency Interactive Messaging — new record created during coordinate-step verification; verified against github.com/agntcy/slim README, Linux Foundation/AGNTCY donation coverage, and the IETF individual draft draft-mpsb-agntcy-slim-00
2026-09-06 — api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs — new record created from the occupant-diff candidate list; verified against RFC 9727 text via rfc-editor.org
2026-09-06 — api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs — fix round 1: added second evidence entry (IANA Well-Known URIs registry, fetched directly) confirming permanent registration
2026-09-06 — Really Simple Licensing — created and verified against rslstandard.org/rsl (occupant-diff candidate)
2026-09-06 — agent-permissions.json — created and verified against github.com/las-wg/agent-permissions.json and arxiv.org/html/2601.02371v2 (occupant-diff candidate)
2026-09-06 — auth.md — created and verified against auth-md.com/specification and auth-md.com (occupant-diff candidate)
2026-09-06 — OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization) — created and verified against rfc-editor.org/rfc/rfc9728.html and rfc-editor.org/rfc/rfc8414.html (occupant-diff candidate)
2026-09-06 — AI Crawler User-Agent Tokens in robots.txt — created and verified against developers.openai.com/api/docs/bots, support.claude.com/en/articles/8896518, developers.google.com/search/docs/crawling-indexing/google-common-crawlers, docs.perplexity.ai/guides/bots (occupant-diff candidate)
2026-09-06 — MCP Apps — new record: verified against github.com/modelcontextprotocol/ext-apps, its dated spec file, and github.com/MCP-UI-Org/mcp-ui; found via search for other agent-rendered-UI specs during A2UI/AG-UI verification
2026-09-06 — Agent Readability Spec — new record added during read-step verification; verified against vercel.com/kb/guide/agent-readability-spec and independent commentary
2026-09-06 — agents.json — new record added during read-step verification; reclassified to the act step and verified against the wild-card-ai/agents-json README and repository metadata
2026-09-06 — agents.txt — new record added during read-step verification; reclassified to the discover step after finding the name covers multiple non-converging, competing specifications
2026-09-06 — ai.txt — new record added during read-step verification; reclassified to the permit step after finding the name covers multiple unrelated policy proposals plus one unrelated content-description product
2026-09-06 — LMOS (Language Model Operating System) — added from arXiv 2504.16736 survey comparison, verified against eclipse.dev/lmos/, eclipse.dev/lmos/docs/lmos_protocol/introduction/, github.com/eclipse-lmos
2026-09-06 — Agent Connect Protocol (AGNTCY) — added from arXiv 2504.16736 survey comparison, verified against github.com/agntcy/acp-spec, spec.acp.agntcy.org, github.com/orgs/agntcy/repositories
2026-09-06 — Agent Connect Protocol (AGNTCY) — governance corrected to reflect Cisco donating AGNTCY to the Linux Foundation, per sibling records ads/oasf/slim; verified against existing agenticweb.wiki records
2026-09-06 — Agent Protocol — added from arXiv 2504.16736 survey comparison, verified against github.com/AI-Engineer-Foundation/agent-protocol (redirects to agi-inc/agent-protocol), agentprotocol.ai
2026-09-06 — AITP (Agent Interaction & Transaction Protocol) — added from arXiv 2504.16736 survey comparison, verified against aitp.dev, github.com/nearai/aitp
2026-09-06 — Coral Protocol (CoralOS) — added from arXiv 2504.16736 survey comparison, verified against docs.coralos.ai/about, docs.coralos.ai/api-reference/local/create-session
2026-09-06 — Web Agent Protocol (WAP) — added from arXiv 2504.16736 survey comparison, verified against github.com/OTA-Tech-AI/web-agent-protocol
2026-09-06 — Web Agent Protocol (WAP) — added second evidence entry (otatech.ai) to satisfy the two-source verification requirement
2026-09-05 — Model Context Protocol — seeded from Exa Agent research run
2026-09-05 — Agent2Agent Protocol — seeded from Exa Agent research run
2026-09-05 — Agent Client Protocol — seeded from Exa Agent research run
2026-09-05 — Agent Communication Protocol — seeded from Exa Agent research run
2026-09-05 — Agentic Commerce Protocol — seeded from Exa Agent research run
2026-09-05 — Universal Commerce Protocol — seeded from Exa Agent research run
2026-09-05 — Agent Payments Protocol — seeded from Exa Agent research run
2026-09-05 — AP2 Checkout Mandate — seeded from Exa Agent research run
2026-09-05 — x402 — seeded from Exa Agent research run
2026-09-05 — L402 — seeded from Exa Agent research run
2026-09-05 — Machine Payments Protocol — seeded from Exa Agent research run
2026-09-05 — ERC-8004: Trustless Agents — seeded from Exa Agent research run
2026-09-05 — ERC-8183: Agentic Commerce — seeded from Exa Agent research run
2026-09-05 — ERC-8226 Regulated Agent Mandate — seeded from Exa Agent research run
2026-09-05 — WebMCP — seeded from Exa Agent research run
2026-09-05 — NLWeb — seeded from Exa Agent research run
2026-09-05 — Agent Skills — seeded from Exa Agent research run
2026-09-05 — llms.txt — seeded from Exa Agent research run
2026-09-05 — AGENTS.md — seeded from Exa Agent research run
2026-09-05 — AIPREF Content-Usage Attachment — seeded from Exa Agent research run
2026-09-05 — AIPREF Vocabulary — seeded from Exa Agent research run
2026-09-05 — Text and Data Mining Reservation Protocol — seeded from Exa Agent research run
2026-09-05 — Content Signals Policy — seeded from Exa Agent research run
2026-09-05 — Web Bot Auth HTTP Message Signatures — seeded from Exa Agent research run
2026-09-05 — Signature Agent Card (Web Bot Auth registry) — seeded from Exa Agent research run
2026-09-05 — HTTP Message Signatures — seeded from Exa Agent research run
2026-09-05 — Agentic Resource Discovery — seeded from Exa Agent research run
2026-09-05 — AI Catalog well-known file — seeded from Exa Agent research run
2026-09-05 — DNS for AI Discovery — seeded from Exa Agent research run
2026-09-05 — Agent Name Service v2 (ANS) — seeded from Exa Agent research run
2026-09-05 — Agent Identity and Discovery — seeded from Exa Agent research run
2026-09-05 — Agent Discovery Protocol — seeded from Exa Agent research run
2026-09-05 — Agent Registration and Discovery Protocol — seeded from Exa Agent research run
2026-09-05 — Agent Directory Service — seeded from Exa Agent research run
2026-09-05 — Open Agentic Schema Framework — seeded from Exa Agent research run
2026-09-05 — A2UI (Agent to UI) Protocol — seeded from Exa Agent research run
2026-09-05 — Agent-User Interaction Protocol — seeded from Exa Agent research run
2026-09-05 — Apache Ossie (formerly Open Semantic Interchange) — seeded from Exa Agent research run
2026-09-05 — Open Knowledge Format — seeded from Exa Agent research run
2026-09-05 — OpenAI Plugins (formerly Apps SDK) — seeded from Exa Agent research run
2026-09-05 — Agentic Advertising Management Protocols — seeded from Exa Agent research run
2026-09-05 — Agentic Real Time Framework — seeded from Exa Agent research run
2026-09-05 — Ad Context Protocol — seeded from Exa Agent research run
2026-09-05 — Visa Trusted Agent Protocol — seeded from Exa Agent research run
2026-09-05 — Verifiable Intent — seeded from Exa Agent research run
2026-09-05 — SPIFFE (Secure Production Identity Framework for Everyone) — seeded from Exa Agent research run
2026-09-05 — Workload Identity in Multi System Environments (WIMSE) Architecture — seeded from Exa Agent research run
2026-09-05 — Agent Authorization Grant — seeded from Exa Agent research run
2026-09-05 — OAuth Profile for Delegated AI Agent Authorization — seeded from Exa Agent research run
2026-09-05 — Agent Authorization Profile — seeded from Exa Agent research run
2026-09-05 — Agent Identity Protocol (AIP) — seeded from Exa Agent research run
2026-09-05 — Agent Transfer Protocol — seeded from Exa Agent research run
2026-09-05 — VCAP: Verified Commerce for Agent Protocols — seeded from Exa Agent research run
2026-09-05 — Agent Network Protocol — seeded from Exa Agent research run
2026-09-05 — Agora Protocol — seeded from Exa Agent research run
2026-09-05 — Agora (agent marketplace protocol) — seeded from Exa Agent research run
2026-09-05 — s402 — seeded from Exa Agent research run