--- type: Agentic Web Standard title: "Eclipse LMOS (Language Model Operating System)" description: "How does an agent or tool from one organization describe itself and get discovered by agents from another organization, across network boundaries?" resource: "https://eclipse.dev/lmos/docs/lmos_protocol/introduction/" tags: ["discover", "document-format", "community", "describe-agent-capabilities", "discover-my-api", "agent-to-agent-messaging", "prove-agent-identity"] status: draft generated: { by: agenticweb-builder/1.0, at: 2026-10-30T00:00:00Z } verified: { by: process:agenticweb-engine, at: 2026-10-29T00:00:00Z } stale_after: 2026-11-28T00:00:00Z sources: - id: ref-1 resource: "https://eclipse.dev/lmos/docs/lmos_protocol/introduction/" title: "Eclipse LMOS, LMOS Protocol documentation, Introduction (undated page), checked 2026-10-29: \"The primary goal of the LMOS Protocol is to pave the way for an Internet of Agents (IoA) — an internet-scale multi-agent system where AI agents and tools from different organizations can be easily published, discovered, and interconnected, regardless of the technologies they are built on.\" \"The LMOS Protocol is published by the Eclipse LMOS project. It is not a W3C Standard nor is it on the W3C Standards Track. However, we plan to initiate the formal W3C process once the protocol reaches a mature state.\" \"Please note that this protocol is work in progress and contains empty sections.\" \"Namespace URI: https://eclipse.dev/lmos/protocol/v1\" \"To guarantee authenticity and integrity, the description document must be signed using a W3C Decentralized Identifier (DID).\" \"For local network discovery and registration, DNS-SD/mDNS can be used. For broader network discovery, agents can publish their metadata to Agent registries.\" \"The LMOS Protocol is designed to leverage the established W3C Web of Things (WoT) architecture which addresses fragmentation across the Internet of Things (IoT) by building upon widely adopted web technologies.\" \"It includes a decentralized identity authentication scheme based on W3C DID, but also supports OAuth2, Bearer, and other security schemes.\" \"the protocol addresses challenges in ad-hoc interoperability by defining an HTTP sub-protocol for REST-based interactions and a WebSocket sub-protocol for real-time communication.\"" last_modified: 2026-10-29T00:00:00Z - id: ref-2 resource: "https://eclipse.dev/lmos/docs/lmos_protocol/agent_description/" title: "Eclipse LMOS, LMOS Protocol documentation, Agent Description Format (undated page), checked 2026-10-29: \"The LMOS Agent Description Format builds on top of the Thing Description (TD) format from the Web of Things (WoT) specification and extends it by specifying an additional schema tailored to the needs of intelligent agents.\"" last_modified: 2026-10-29T00:00:00Z - id: ref-3 resource: "https://eclipse.dev/lmos/docs/lmos_protocol/discovery/" title: "Eclipse LMOS, LMOS Protocol documentation, Discovery (undated page), checked 2026-10-29: \"This can be done through various introduction mechanisms like mDNS, DNS-SD, or well-known URLs.\" \"WoT things use a specific service type for DNS-SD: \"_wot._tcp\".\" \"Federated, decentralized protocols like the AT Protocol or dat protocol could provide an efficient way to propagate agent and tool descriptions.\"" last_modified: 2026-10-29T00:00:00Z - id: ref-4 resource: "https://eclipse.dev/lmos/docs/lmos_protocol/registry/" title: "Eclipse LMOS, LMOS Protocol documentation, Registry (undated page), checked 2026-10-29: \"However, it must not be a centralized registry. Instead, it can utilize decentralized protocols such as peer-to-peer (P2P) networks or distributed hash tables (DHT), ensuring that agents can interact and discover one another without relying on a single central authority.\" \"A Thing Directory in W3C Web of Things (WoT) serves as a registry for Thing Descriptions (TDs).\" \"A centralized registry can implement and enforce security policies\"" last_modified: 2026-10-29T00:00:00Z - id: ref-5 resource: "https://www.w3.org/TR/wot-discovery/" title: "W3C, Web of Things (WoT) Discovery, W3C Recommendation, 2023-12-05, checked 2026-10-29: \"W3C Recommendation 05 December 2023\" \"it MUST register its own Thing Description into the following path: /.well-known/wot\"" last_modified: 2023-12-05T00:00:00Z - id: ref-6 resource: "https://www.w3.org/TR/wot-thing-description11/" title: "W3C, Web of Things (WoT) Thing Description 1.1, W3C Recommendation, 2023-12-05, checked 2026-10-29: \"Web of Things (WoT) Thing Description 1.1 W3C Recommendation 05 December 2023\"" last_modified: 2023-12-05T00:00:00Z - id: ref-7 resource: "https://projects.eclipse.org/projects/technology.lmos" title: "Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (project overview), checked 2026-10-29: \"The Eclipse LMOS project (Language Model Operating System) is essentially a platform for building and running AI systems that can handle complex tasks.\" \"State Incubating\" \"Licenses Apache Software License 2.0\" \"Industry Collaborations Eclipse Software Defined Vehicle\"" last_modified: 2026-10-29T00:00:00Z - id: ref-8 resource: "https://projects.eclipse.org/projects/technology.lmos/governance" title: "Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (governance tab: reviews), checked 2026-10-29: \"Creation Review 2024-12-04\" \"2026.09 Progress Review 2026-09-23\"" last_modified: 2026-09-23T00:00:00Z - id: ref-9 resource: "https://projects.eclipse.org/projects/technology.lmos/who" title: "Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (who's involved tab), checked 2026-10-29: \"Project Leads Arun joseph Jasbir Singh amant kumar Patrick Whelan Kai Kreuzer\" \"Historical Committers Robert Winkler\"" last_modified: 2026-10-29T00:00:00Z - id: ref-10 resource: "https://projects.eclipse.org/proposals/eclipse-lmos" title: "Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (project proposal, 2024), checked 2026-10-29: \"So far, all contributors to these repos are employees of Deutsche Telekom.\" \"The initial contribution consists out of a couple of repositories that currently exist under https://github.com/lmos-ai\" \"A trademark search has given two potential issues that should probably be evaluated by a legal expert\"" last_modified: 2024-12-04T00:00:00Z - id: ref-11 resource: "https://eclipse.dev/lmos/about_us/" title: "Eclipse LMOS, About us (letter by Arun Joseph, undated), checked 2026-10-29: \"It was around the time that I joined Deutsche Telekom's AI task force to explore how LLMs could be applied to customer sales and service\" \"we ported our entire LangChain RAG implementation into Kotlin, marking the beginning of the Large Model Operating System (LMOS) in October 2023.\"" last_modified: 2026-10-29T00:00:00Z - id: ref-12 resource: "https://eclipse.dev/lmos/" title: "Eclipse LMOS, Eclipse LMOS (project home page), checked 2026-10-29: \"LMOS leverages established open W3C standards for agent meta data description, discovery and communication across network boundaries.\"" last_modified: 2026-10-29T00:00:00Z - id: ref-13 resource: "https://newsroom.eclipse.org/news/announcements/eclipse-lmos-redefines-agentic-ai-industry%E2%80%99s-first-open-agent-definition" title: "Eclipse Foundation, Eclipse LMOS Redefines Agentic AI with Industry’s First Open Agent Definition Language (ADL) for Enterprises (press release), 2025-10-28, checked 2026-10-29: \"BRUSSELS – 28 October 2025 – The Eclipse Foundation, one of the world's largest open source software foundations, today announced the introduction of the Agent Definition Language (ADL) functionality to the Eclipse LMOS (Language Models Operating System) project.\" \"Eclipse LMOS Platform: An open, vendor-neutral orchestration layer for agent lifecycle management, discovery, semantic routing, and observability, built on the CNCF stack and currently in Alpha.\" \"At Deutsche Telekom, Eclipse LMOS powers the award-winning Frag Magenta OneBOT assistant and other customer-facing AI systems. This deployment, one of Europe's largest multi-agent enterprise deployments, has processed millions of service and sales interactions across several countries, showcasing LMOS's enterprise-grade scalability and reliability in production environments.\" \"Agentic AI is redefining enterprise software, yet until now there has been no open source alternatives to proprietary offerings,\"" last_modified: 2025-10-28T00:00:00Z - id: ref-14 resource: "https://api.github.com/orgs/eclipse-lmos/repos?per_page=100" title: "GitHub REST API, eclipse-lmos organisation repository list (JSON; 15 public repositories, none archived), checked 2026-10-29: \"\"full_name\": \"eclipse-lmos/arc\"\" \"\"archived\": false\"" last_modified: 2026-10-29T00:00:00Z - id: ref-15 resource: "https://github.com/eclipse-lmos/lmos-kotlin-sdk" title: "GitHub, GitHub - eclipse-lmos/lmos-kotlin-sdk: The LMOS Kotlin SDK to develop WoT-enabled Agents. (README), checked 2026-10-29: \"The LMOS Kotlin SDK allows you to connect to a Web of Things-enabled agents by pointing to its well-known Thing Description (TD).\" \"lmos-kotlin-sdk-client:0.1.0-SNAPSHOT\"" last_modified: 2026-10-29T00:00:00Z - id: ref-16 resource: "https://api.github.com/repos/eclipse-lmos/arc/releases?per_page=5" title: "GitHub REST API, eclipse-lmos/arc releases (JSON), checked 2026-10-29: \"\"tag_name\": \"0.234.0\"\" \"\"published_at\": \"2026-09-02T06:37:53Z\"\"" last_modified: 2026-09-02T00:00:00Z - id: ref-17 resource: "https://api.github.com/repos/eclipse-lmos/lmos-runtime/releases?per_page=3" title: "GitHub REST API, eclipse-lmos/lmos-runtime releases (JSON), checked 2026-10-29: \"\"tag_name\": \"0.32.0\"\" \"\"published_at\": \"2026-08-10T08:34:09Z\"\"" last_modified: 2026-08-10T00:00:00Z - id: ref-18 resource: "https://api.github.com/repos/eclipse-lmos/lmos-router/releases?per_page=3" title: "GitHub REST API, eclipse-lmos/lmos-router releases (JSON), checked 2026-10-29: \"\"tag_name\": \"0.29.0\"\" \"\"published_at\": \"2026-06-26T10:17:37Z\"\"" last_modified: 2026-06-26T00:00:00Z - id: ref-19 resource: "https://api.github.com/repos/eclipse-lmos/lmos-operator/releases?per_page=3" title: "GitHub REST API, eclipse-lmos/lmos-operator releases (JSON), checked 2026-10-29: \"\"tag_name\": \"0.11.0\"\" \"\"published_at\": \"2026-06-26T10:16:35Z\"\"" last_modified: 2026-06-26T00:00:00Z - id: ref-20 resource: "https://eclipse.dev/lmos/docs/arc/mcp/" title: "Eclipse LMOS, Arc documentation, Model Context Protocol (MCP) (undated page), checked 2026-10-29: \"Model Context Protocol (MCP) From version 0.122.0\"" last_modified: 2026-10-29T00:00:00Z - id: ref-21 resource: "https://eclipse.dev/lmos/docs/arc/dsl/defining_agents/" title: "Eclipse LMOS, Arc documentation, Defining Agents (undated page), checked 2026-10-29: \"fetchSkills() and A2A agent cards publish this list unchanged\"" last_modified: 2026-10-29T00:00:00Z - id: ref-22 resource: "https://www.w3.org/events/meetings/5a77b997-467b-4d5d-bb40-b84789c17d2e/20250314T090000/" title: "W3C, Joint WebAgents, WoT CG and WebThing Protocol CG - BiWeekly Call of WebAgents CG - Meetup 25 WoT CG (event page), 2025-03-14, checked 2026-10-29: \"In this special session, we have three community groups joining for a presentation by Robert Winkler from Deutsche Telekom on the Eclipse LMOS project\" \"Date: 14 March 2025\"" last_modified: 2025-03-14T00:00:00Z - id: ref-23 resource: "https://lists.w3.org/Archives/Public/public-webagents/2025Mar/0006.html" title: "W3C public-webagents mailing list archive, message from Robert Winkler (Deutsche Telekom), 2025-03-06, checked 2026-10-29: \"We formulate a Agent/Tool Description Format and Capability Model based on Web of Things and it's already running in scale at DT.\" \"Date: Thu, 6 Mar 2025\"" last_modified: 2025-03-06T00:00:00Z - id: ref-24 resource: "https://www.w3.org/community/webagents/participants" title: "W3C, Participants in the Autonomous Agents on the Web Community Group, checked 2026-10-29: \"Kai Kreuzer Deutsche Telekom AG\" \"Robert Winkler Deutsche Telekom AG\"" last_modified: 2026-10-29T00:00:00Z - id: ref-25 resource: "https://eclipse.dev/lmos/blog/LMOS-Accelerated-Agent-Dev/" title: "Eclipse LMOS, Rahul Jamwal, LMOS - Accelerated Agent Development (project blog), 2025-03-06, checked 2026-10-29: \"LMOS has been instrumental in the development and success of Deutsche Telekom's chatbot, \"Frag Magenta\".\" \"LMOS platform has been operational since 2023, helping the chatbot provide round-the-clock assistance on various topics, including contract inquiries, billing issues, and technical support through the deployed ARC agents.\"" last_modified: 2025-03-06T00:00:00Z - id: ref-26 resource: "https://blogs.eclipse.org/post/thabang-mashologu/building-smarter-scalable-ai-how-eclipse-lmos-redefining-agent-design" title: "Eclipse Foundation, Thabang Mashologu, Building smarter, scalable AI: how Eclipse LMOS is redefining agent design (blog), 2025-11-04, checked 2026-10-29: \"Their Frag Magenta OneBOT assistant, built on LMOS, has handled millions of customer service and sales interactions across multiple countries\"" last_modified: 2025-11-04T00:00:00Z - id: ref-27 resource: "https://eclipse-foundation.blog/2025/12/18/whats-in-store-for-open-source-in-2026/" title: "Eclipse Foundation, What’s in store for open source in 2026? (Life at Eclipse blog), 2025-12-18, checked 2026-10-29: \"Eclipse LMOS and its Agent Definition Language (ADL) provide one model-neutral option for defining agent behaviour in a structured and maintainable way.\"" last_modified: 2025-12-18T00:00:00Z - id: ref-28 resource: "https://newsroom.eclipse.org/news/announcements/eclipse-foundation-launches-sovereign-ai-foundation" title: "Eclipse Foundation, Eclipse Foundation Launches the Sovereign AI Foundation (press release), 2026-09-30, checked 2026-10-29: \"Relevant projects include Eclipse Theia and Theia AI for AI-enabled developer tools; Eclipse Enclave for running AI coding agents in isolated, policy-controlled environments; Eclipse PanEval for evaluating model capability, safety, and cybersecurity; and Eclipse LMOS for developing and managing multi-agent systems.\"" last_modified: 2026-09-30T00:00:00Z - id: ref-29 resource: "https://www.telekom.com/en/newsroom/latest-updates/media-information/2026/10/deutsche-telekom-boosts-growth-efficiency-and-quality-through-t" title: "Deutsche Telekom, Deutsche Telekom boosts growth, efficiency and quality through the use of AI (media information), 2026-10-05, checked 2026-10-29: \"The chatbot \"Frag Magenta\" handled approximately 2.6 million customer service calls in the first half of 2026 alone.\"" last_modified: 2026-10-05T00:00:00Z - id: ref-30 resource: "https://thenewstack.io/eclipse-opens-up-enterprise-ai-agent-development-with-adl/" title: "Darryl K. Taft, The New Stack, Eclipse Opens Up Enterprise AI Agent Development With ADL, 2025-10-29, checked 2026-10-29: \"Arun Joseph, Eclipse LMOS project lead, developed the platform in 2023 while leading Deutsche Telekom's AI program. His mission was to deploy AI across 10 European countries for sales and service operations.\" \"This \"looks like a real signal that agents are moving from demos to ops,\" David Mytton, CEO of AI-based dev security platform provider Arcjet, told The New Stack.\" \"Others have explored 'agent definition' ideas, but Eclipse's governance and Java footprint matter for adoption because the JVM is widely used throughout serious enterprises.\"" last_modified: 2025-10-29T00:00:00Z - id: ref-31 resource: "https://www.heise.de/news/Eclipse-ADL-Standardisierte-Sprache-fuer-Entwurf-und-Steuerung-von-KI-Agenten-10962462.html" title: "Wolf Hosbach, heise online, Eclipse ADL: Standardisierte Sprache für Entwurf und Steuerung von KI-Agenten (in German), 2025-10-29, checked 2026-10-29: \"LMOS ist bereits bei der Telekom als Basis für den Chatbot \"Frag Magenta\" im Einsatz.\" \"Die LMOS-Plattform befindet sich noch im Alphastadium und soll als offene Orchestrierungsschicht für die Infrastruktur dienen und basiert auf den Open-Source-Tools aus dem Ökosystem der CNCF (Cloud Native Computing Foundation).\"" last_modified: 2025-10-29T00:00:00Z - id: ref-32 resource: "https://adtmag.com/articles/2025/11/11/eclipse-foundation-launches-open-language-for-building-enterprise-ai-agents.aspx" title: "John K. Waters, ADTmag, Eclipse Foundation Launches Open Language for Building Enterprise AI Agents, 2025-11-09 (the URL path says 2025/11/11), checked 2026-10-29: \"The new Agent Definition Language (ADL) was developed to address a growing challenge in enterprise technology: the lack of common standards for creating AI systems capable of performing complex business tasks autonomously.\"" last_modified: 2025-11-09T00:00:00Z --- # Eclipse LMOS (Language Model Operating System) Eclipse LMOS (Language Model Operating System) is an agentic-web standard (document format — /.well-known/wot-thing-description) at step 1, Discover, governed by Eclipse Foundation, as an Eclipse Technology project. State Incubating; its status is "Protocol: Please note that this protocol is work in progress and contains empty sections". It answers: "How does an agent or tool from one organization describe itself and get discovered by agents from another organization, across network boundaries?" Implementation status is shipping (Deutsche Telekom, Frag Magenta OneBOT assistant), last verified 2026-10-29. # Overview Eclipse LMOS is an Eclipse Foundation open-source project, begun inside Deutsche Telekom in October 2023, for building and running multi-agent AI systems [^ref-7][^ref-11]. Its LMOS Protocol describes agents with a signed description based on the W3C Web of Things Thing Description, and lets agents find each other through DNS-SD/mDNS on local networks or through decentralised registries [^ref-1][^ref-2][^ref-4]. The project publishes the protocol itself as a work in progress, outside the W3C Standards Track and without a numbered release, while the platform code ships regular component releases [^ref-1][^ref-16]. Since October 2025 the project has been presented mainly through its Agent Definition Language and its Alpha-stage platform, with Deutsche Telekom's Frag Magenta assistant as the named production user [^ref-13][^ref-30]. ### Architecture and project details * **Name.** The spelling varies by source. Project page: "The Eclipse LMOS project (Language Model Operating System) is essentially a platform for building and running AI systems that can handle complex tasks." [^ref-7]. Eclipse Foundation, 2025: "BRUSSELS – 28 October 2025 – The Eclipse Foundation, one of the world's largest open source software foundations, today announced the introduction of the Agent Definition Language (ADL) functionality to the Eclipse LMOS (Language Models Operating System) project." [^ref-13]. The founder's letter: "we ported our entire LangChain RAG implementation into Kotlin, marking the beginning of the Large Model Operating System (LMOS) in October 2023." [^ref-11] * **Agent description.** "The LMOS Agent Description Format builds on top of the Thing Description (TD) format from the Web of Things (WoT) specification and extends it by specifying an additional schema tailored to the needs of intelligent agents." [^ref-2]. "To guarantee authenticity and integrity, the description document must be signed using a W3C Decentralized Identifier (DID)." [^ref-1]. "The LMOS Protocol is designed to leverage the established W3C Web of Things (WoT) architecture which addresses fragmentation across the Internet of Things (IoT) by building upon widely adopted web technologies." [^ref-1] * **Discovery and registry.** "For local network discovery and registration, DNS-SD/mDNS can be used. For broader network discovery, agents can publish their metadata to Agent registries." [^ref-1]. "A Thing Directory in W3C Web of Things (WoT) serves as a registry for Thing Descriptions (TDs)." [^ref-4]. The Registry page says "However, it must not be a centralized registry. Instead, it can utilize decentralized protocols such as peer-to-peer (P2P) networks or distributed hash tables (DHT), ensuring that agents can interact and discover one another without relying on a single central authority.", yet later in the same page: "A centralized registry can implement and enforce security policies" [^ref-4]. Discovery page: "Federated, decentralized protocols like the AT Protocol or dat protocol could provide an efficient way to propagate agent and tool descriptions." [^ref-3] * **Transport and security.** "the protocol addresses challenges in ad-hoc interoperability by defining an HTTP sub-protocol for REST-based interactions and a WebSocket sub-protocol for real-time communication." "It includes a decentralized identity authentication scheme based on W3C DID, but also supports OAuth2, Bearer, and other security schemes." [^ref-1] * **MCP and A2A.** Arc documentation: "Model Context Protocol (MCP) From version 0.122.0" [^ref-20]; "fetchSkills() and A2A agent cards publish this list unchanged" [^ref-21] * **W3C links.** "In this special session, we have three community groups joining for a presentation by Robert Winkler from Deutsche Telekom on the Eclipse LMOS project", "Date: 14 March 2025" [^ref-22]. On the WebAgents list ("Date: Thu, 6 Mar 2025"), Winkler wrote: "We formulate a Agent/Tool Description Format and Capability Model based on Web of Things and it's already running in scale at DT." [^ref-23]. The Autonomous Agents on the Web CG lists "Kai Kreuzer Deutsche Telekom AG" and "Robert Winkler Deutsche Telekom AG" [^ref-24]. The WoT base specifications: "Web of Things (WoT) Thing Description 1.1 W3C Recommendation 05 December 2023" [^ref-6]; WoT Discovery, "W3C Recommendation 05 December 2023" [^ref-5]. The home page: "LMOS leverages established open W3C standards for agent meta data description, discovery and communication across network boundaries." [^ref-12] * **Other Eclipse links, licence, and repositories.** "Industry Collaborations Eclipse Software Defined Vehicle" [^ref-7]; "Licenses Apache Software License 2.0" [^ref-7]. In 2026: "Relevant projects include Eclipse Theia and Theia AI for AI-enabled developer tools; Eclipse Enclave for running AI coding agents in isolated, policy-controlled environments; Eclipse PanEval for evaluating model capability, safety, and cybersecurity; and Eclipse LMOS for developing and managing multi-agent systems." [^ref-28]. There are 15 public repositories in the eclipse-lmos GitHub organisation, none archived, counted from the API on 2026-10-29 [^ref-14]. # Examples ```http GET {origin}/.well-known/wot-thing-description # parse: A JSON-LD document whose @context or @type references the LMOS namespace (https://eclipse.dev/lmos/protocol/v1) confirms an LMOS-described Thing; this well-known path is the W3C WoT discovery convention LMOS explicitly builds on, not yet a path LMOS itself mandates. # on absent: No response, or a WoT Thing Description without the LMOS namespace: this origin either doesn't participate in LMOS or (more likely for most origins) simply predates/ignores the still-draft protocol; the LMOS spec itself does not yet fix a single discovery path, so absence here is weak evidence. ``` # Knowledge Graph * **Lifecycle Step**: [1 Discover](/category/discover/index.md) * **Pairs with**: [Agent2Agent Protocol (A2A)](/okf/protocols/a2a.md), [Model Context Protocol](/okf/protocols/mcp.md), [Open Agentic Schema Framework](/okf/protocols/oasf.md), [Agent Network Protocol](/okf/protocols/anp.md), [Agent Name Service v2 (ANS)](/okf/protocols/ans.md), [Agent Identity & Discovery (AID)](/okf/protocols/aid.md) [^ref-1]: Eclipse LMOS, LMOS Protocol documentation, Introduction (undated page), checked 2026-10-29: "The primary goal of the LMOS Protocol is to pave the way for an Internet of Agents (IoA) — an internet-scale multi-agent system where AI agents and tools from different organizations can be easily published, discovered, and interconnected, regardless of the technologies they are built on." "The LMOS Protocol is published by the Eclipse LMOS project. It is not a W3C Standard nor is it on the W3C Standards Track. However, we plan to initiate the formal W3C process once the protocol reaches a mature state." "Please note that this protocol is work in progress and contains empty sections." "Namespace URI: https://eclipse.dev/lmos/protocol/v1" "To guarantee authenticity and integrity, the description document must be signed using a W3C Decentralized Identifier (DID)." "For local network discovery and registration, DNS-SD/mDNS can be used. For broader network discovery, agents can publish their metadata to Agent registries." "The LMOS Protocol is designed to leverage the established W3C Web of Things (WoT) architecture which addresses fragmentation across the Internet of Things (IoT) by building upon widely adopted web technologies." "It includes a decentralized identity authentication scheme based on W3C DID, but also supports OAuth2, Bearer, and other security schemes." "the protocol addresses challenges in ad-hoc interoperability by defining an HTTP sub-protocol for REST-based interactions and a WebSocket sub-protocol for real-time communication." (https://eclipse.dev/lmos/docs/lmos_protocol/introduction/) [^ref-2]: Eclipse LMOS, LMOS Protocol documentation, Agent Description Format (undated page), checked 2026-10-29: "The LMOS Agent Description Format builds on top of the Thing Description (TD) format from the Web of Things (WoT) specification and extends it by specifying an additional schema tailored to the needs of intelligent agents." (https://eclipse.dev/lmos/docs/lmos_protocol/agent_description/) [^ref-3]: Eclipse LMOS, LMOS Protocol documentation, Discovery (undated page), checked 2026-10-29: "This can be done through various introduction mechanisms like mDNS, DNS-SD, or well-known URLs." "WoT things use a specific service type for DNS-SD: "_wot._tcp"." "Federated, decentralized protocols like the AT Protocol or dat protocol could provide an efficient way to propagate agent and tool descriptions." (https://eclipse.dev/lmos/docs/lmos_protocol/discovery/) [^ref-4]: Eclipse LMOS, LMOS Protocol documentation, Registry (undated page), checked 2026-10-29: "However, it must not be a centralized registry. Instead, it can utilize decentralized protocols such as peer-to-peer (P2P) networks or distributed hash tables (DHT), ensuring that agents can interact and discover one another without relying on a single central authority." "A Thing Directory in W3C Web of Things (WoT) serves as a registry for Thing Descriptions (TDs)." "A centralized registry can implement and enforce security policies" (https://eclipse.dev/lmos/docs/lmos_protocol/registry/) [^ref-5]: W3C, Web of Things (WoT) Discovery, W3C Recommendation, 2023-12-05, checked 2026-10-29: "W3C Recommendation 05 December 2023" "it MUST register its own Thing Description into the following path: /.well-known/wot" (https://www.w3.org/TR/wot-discovery/) [^ref-6]: W3C, Web of Things (WoT) Thing Description 1.1, W3C Recommendation, 2023-12-05, checked 2026-10-29: "Web of Things (WoT) Thing Description 1.1 W3C Recommendation 05 December 2023" (https://www.w3.org/TR/wot-thing-description11/) [^ref-7]: Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (project overview), checked 2026-10-29: "The Eclipse LMOS project (Language Model Operating System) is essentially a platform for building and running AI systems that can handle complex tasks." "State Incubating" "Licenses Apache Software License 2.0" "Industry Collaborations Eclipse Software Defined Vehicle" (https://projects.eclipse.org/projects/technology.lmos) [^ref-8]: Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (governance tab: reviews), checked 2026-10-29: "Creation Review 2024-12-04" "2026.09 Progress Review 2026-09-23" (https://projects.eclipse.org/projects/technology.lmos/governance) [^ref-9]: Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (who's involved tab), checked 2026-10-29: "Project Leads Arun joseph Jasbir Singh amant kumar Patrick Whelan Kai Kreuzer" "Historical Committers Robert Winkler" (https://projects.eclipse.org/projects/technology.lmos/who) [^ref-10]: Eclipse Foundation, projects.eclipse.org, Eclipse LMOS (project proposal, 2024), checked 2026-10-29: "So far, all contributors to these repos are employees of Deutsche Telekom." "The initial contribution consists out of a couple of repositories that currently exist under https://github.com/lmos-ai" "A trademark search has given two potential issues that should probably be evaluated by a legal expert" (https://projects.eclipse.org/proposals/eclipse-lmos) [^ref-11]: Eclipse LMOS, About us (letter by Arun Joseph, undated), checked 2026-10-29: "It was around the time that I joined Deutsche Telekom's AI task force to explore how LLMs could be applied to customer sales and service" "we ported our entire LangChain RAG implementation into Kotlin, marking the beginning of the Large Model Operating System (LMOS) in October 2023." (https://eclipse.dev/lmos/about_us/) [^ref-12]: Eclipse LMOS, Eclipse LMOS (project home page), checked 2026-10-29: "LMOS leverages established open W3C standards for agent meta data description, discovery and communication across network boundaries." (https://eclipse.dev/lmos/) [^ref-13]: Eclipse Foundation, Eclipse LMOS Redefines Agentic AI with Industry’s First Open Agent Definition Language (ADL) for Enterprises (press release), 2025-10-28, checked 2026-10-29: "BRUSSELS – 28 October 2025 – The Eclipse Foundation, one of the world's largest open source software foundations, today announced the introduction of the Agent Definition Language (ADL) functionality to the Eclipse LMOS (Language Models Operating System) project." "Eclipse LMOS Platform: An open, vendor-neutral orchestration layer for agent lifecycle management, discovery, semantic routing, and observability, built on the CNCF stack and currently in Alpha." "At Deutsche Telekom, Eclipse LMOS powers the award-winning Frag Magenta OneBOT assistant and other customer-facing AI systems. This deployment, one of Europe's largest multi-agent enterprise deployments, has processed millions of service and sales interactions across several countries, showcasing LMOS's enterprise-grade scalability and reliability in production environments." "Agentic AI is redefining enterprise software, yet until now there has been no open source alternatives to proprietary offerings," (https://newsroom.eclipse.org/news/announcements/eclipse-lmos-redefines-agentic-ai-industry%E2%80%99s-first-open-agent-definition) [^ref-14]: GitHub REST API, eclipse-lmos organisation repository list (JSON; 15 public repositories, none archived), checked 2026-10-29: ""full_name": "eclipse-lmos/arc"" ""archived": false" (https://api.github.com/orgs/eclipse-lmos/repos?per_page=100) [^ref-15]: GitHub, GitHub - eclipse-lmos/lmos-kotlin-sdk: The LMOS Kotlin SDK to develop WoT-enabled Agents. (README), checked 2026-10-29: "The LMOS Kotlin SDK allows you to connect to a Web of Things-enabled agents by pointing to its well-known Thing Description (TD)." "lmos-kotlin-sdk-client:0.1.0-SNAPSHOT" (https://github.com/eclipse-lmos/lmos-kotlin-sdk) [^ref-16]: GitHub REST API, eclipse-lmos/arc releases (JSON), checked 2026-10-29: ""tag_name": "0.234.0"" ""published_at": "2026-09-02T06:37:53Z"" (https://api.github.com/repos/eclipse-lmos/arc/releases?per_page=5) [^ref-17]: GitHub REST API, eclipse-lmos/lmos-runtime releases (JSON), checked 2026-10-29: ""tag_name": "0.32.0"" ""published_at": "2026-08-10T08:34:09Z"" (https://api.github.com/repos/eclipse-lmos/lmos-runtime/releases?per_page=3) [^ref-18]: GitHub REST API, eclipse-lmos/lmos-router releases (JSON), checked 2026-10-29: ""tag_name": "0.29.0"" ""published_at": "2026-06-26T10:17:37Z"" (https://api.github.com/repos/eclipse-lmos/lmos-router/releases?per_page=3) [^ref-19]: GitHub REST API, eclipse-lmos/lmos-operator releases (JSON), checked 2026-10-29: ""tag_name": "0.11.0"" ""published_at": "2026-06-26T10:16:35Z"" (https://api.github.com/repos/eclipse-lmos/lmos-operator/releases?per_page=3) [^ref-20]: Eclipse LMOS, Arc documentation, Model Context Protocol (MCP) (undated page), checked 2026-10-29: "Model Context Protocol (MCP) From version 0.122.0" (https://eclipse.dev/lmos/docs/arc/mcp/) [^ref-21]: Eclipse LMOS, Arc documentation, Defining Agents (undated page), checked 2026-10-29: "fetchSkills() and A2A agent cards publish this list unchanged" (https://eclipse.dev/lmos/docs/arc/dsl/defining_agents/) [^ref-22]: W3C, Joint WebAgents, WoT CG and WebThing Protocol CG - BiWeekly Call of WebAgents CG - Meetup 25 WoT CG (event page), 2025-03-14, checked 2026-10-29: "In this special session, we have three community groups joining for a presentation by Robert Winkler from Deutsche Telekom on the Eclipse LMOS project" "Date: 14 March 2025" (https://www.w3.org/events/meetings/5a77b997-467b-4d5d-bb40-b84789c17d2e/20250314T090000/) [^ref-23]: W3C public-webagents mailing list archive, message from Robert Winkler (Deutsche Telekom), 2025-03-06, checked 2026-10-29: "We formulate a Agent/Tool Description Format and Capability Model based on Web of Things and it's already running in scale at DT." "Date: Thu, 6 Mar 2025" (https://lists.w3.org/Archives/Public/public-webagents/2025Mar/0006.html) [^ref-24]: W3C, Participants in the Autonomous Agents on the Web Community Group, checked 2026-10-29: "Kai Kreuzer Deutsche Telekom AG" "Robert Winkler Deutsche Telekom AG" (https://www.w3.org/community/webagents/participants) [^ref-25]: Eclipse LMOS, Rahul Jamwal, LMOS - Accelerated Agent Development (project blog), 2025-03-06, checked 2026-10-29: "LMOS has been instrumental in the development and success of Deutsche Telekom's chatbot, "Frag Magenta"." "LMOS platform has been operational since 2023, helping the chatbot provide round-the-clock assistance on various topics, including contract inquiries, billing issues, and technical support through the deployed ARC agents." (https://eclipse.dev/lmos/blog/LMOS-Accelerated-Agent-Dev/) [^ref-26]: Eclipse Foundation, Thabang Mashologu, Building smarter, scalable AI: how Eclipse LMOS is redefining agent design (blog), 2025-11-04, checked 2026-10-29: "Their Frag Magenta OneBOT assistant, built on LMOS, has handled millions of customer service and sales interactions across multiple countries" (https://blogs.eclipse.org/post/thabang-mashologu/building-smarter-scalable-ai-how-eclipse-lmos-redefining-agent-design) [^ref-27]: Eclipse Foundation, What’s in store for open source in 2026? (Life at Eclipse blog), 2025-12-18, checked 2026-10-29: "Eclipse LMOS and its Agent Definition Language (ADL) provide one model-neutral option for defining agent behaviour in a structured and maintainable way." (https://eclipse-foundation.blog/2025/12/18/whats-in-store-for-open-source-in-2026/) [^ref-28]: Eclipse Foundation, Eclipse Foundation Launches the Sovereign AI Foundation (press release), 2026-09-30, checked 2026-10-29: "Relevant projects include Eclipse Theia and Theia AI for AI-enabled developer tools; Eclipse Enclave for running AI coding agents in isolated, policy-controlled environments; Eclipse PanEval for evaluating model capability, safety, and cybersecurity; and Eclipse LMOS for developing and managing multi-agent systems." (https://newsroom.eclipse.org/news/announcements/eclipse-foundation-launches-sovereign-ai-foundation) [^ref-29]: Deutsche Telekom, Deutsche Telekom boosts growth, efficiency and quality through the use of AI (media information), 2026-10-05, checked 2026-10-29: "The chatbot "Frag Magenta" handled approximately 2.6 million customer service calls in the first half of 2026 alone." (https://www.telekom.com/en/newsroom/latest-updates/media-information/2026/10/deutsche-telekom-boosts-growth-efficiency-and-quality-through-t) [^ref-30]: Darryl K. Taft, The New Stack, Eclipse Opens Up Enterprise AI Agent Development With ADL, 2025-10-29, checked 2026-10-29: "Arun Joseph, Eclipse LMOS project lead, developed the platform in 2023 while leading Deutsche Telekom's AI program. His mission was to deploy AI across 10 European countries for sales and service operations." "This "looks like a real signal that agents are moving from demos to ops," David Mytton, CEO of AI-based dev security platform provider Arcjet, told The New Stack." "Others have explored 'agent definition' ideas, but Eclipse's governance and Java footprint matter for adoption because the JVM is widely used throughout serious enterprises." (https://thenewstack.io/eclipse-opens-up-enterprise-ai-agent-development-with-adl/) [^ref-31]: Wolf Hosbach, heise online, Eclipse ADL: Standardisierte Sprache für Entwurf und Steuerung von KI-Agenten (in German), 2025-10-29, checked 2026-10-29: "LMOS ist bereits bei der Telekom als Basis für den Chatbot "Frag Magenta" im Einsatz." "Die LMOS-Plattform befindet sich noch im Alphastadium und soll als offene Orchestrierungsschicht für die Infrastruktur dienen und basiert auf den Open-Source-Tools aus dem Ökosystem der CNCF (Cloud Native Computing Foundation)." (https://www.heise.de/news/Eclipse-ADL-Standardisierte-Sprache-fuer-Entwurf-und-Steuerung-von-KI-Agenten-10962462.html) [^ref-32]: John K. Waters, ADTmag, Eclipse Foundation Launches Open Language for Building Enterprise AI Agents, 2025-11-09 (the URL path says 2025/11/11), checked 2026-10-29: "The new Agent Definition Language (ADL) was developed to address a growing challenge in enterprise technology: the lack of common standards for creating AI systems capable of performing complex business tasks autonomously." (https://adtmag.com/articles/2025/11/11/eclipse-foundation-launches-open-language-for-building-enterprise-ai-agents.aspx)