--- title: "A2A joins the Agentic AI Foundation | Agent MCP Directory" description: "A2A joins the Agentic AI Foundation. The A2A project was accepted as a Growth Stage project at the Linux Foundation-directed Agentic AI Foundation." canonical: https://agentmcpdirectory.com/news/2026-08-27-a2a-joins-the-agentic-ai-foundation site: "Agent MCP Directory" last_updated: 2026-11-04 date: 2026-08-27 section: "News" --- # A2A joins the Agentic AI Foundation | Agent MCP Directory > A2A joins the Agentic AI Foundation. The A2A project was accepted as a Growth Stage project at the Linux Foundation-directed Agentic AI Foundation. Source: https://agentmcpdirectory.com/news/2026-08-27-a2a-joins-the-agentic-ai-foundation Site: Agent MCP Directory Last reviewed: 2026-11-04 # A2A joins the Agentic AI Foundation The A2A project was accepted as a Growth Stage project at the Linux Foundation-directed Agentic AI Foundation, next to MCP, goose and AGENTS.md. The A2A spec is at 1.0.0 with JSON-RPC, gRPC and HTTP+JSON bindings. Reported 27 August 2026 by a2a-protocol.org, read 4 November 2026. ## What it changes in the data held here 10 of 7,470 probed top-10,000 domains publish an A2A agent card at /.well-known/agent-card.json, which is the discovery file the specification names. The connector log shows which protocol revisions the directory's reachable servers answered with: 189 on 2025-11-25, 40 on 2025-06-18, 16 on 2026-07-28, 11 on 2025-03-26, 9 on 2024-11-05. Servers on 2025-11-25 still use the initialize handshake that 2026-07-28 removes. Source: [a2a-protocol.org](https://a2a-protocol.org/latest/blog/2026/08/27/a-new-chapter-for-a2a-joining-the-agentic-ai-foundation/), a primary source, dated 27 August 2026 and read 4 November 2026. The opening paragraph above is the item; the figures in this section come from this directory's own run of 4 November 2026. ## Where it shows up here - [A2A, the standard](https://agentmcpdirectory.com/standards/a2a/) - [MCP, the standard](https://agentmcpdirectory.com/standards/mcp/) Edition 4 November 2026 Method [How rows are verified](https://agentmcpdirectory.com/method/) Data [CSV and JSON](https://agentmcpdirectory.com/data/) Markdown [This page as markdown](https://agentmcpdirectory.com/news/2026-08-27-a2a-joins-the-agentic-ai-foundation/index.md) ## Sources - [A2A joins the Agentic AI Foundation](https://a2a-protocol.org/latest/blog/2026/08/27/a-new-chapter-for-a2a-joining-the-agentic-ai-foundation/), read 4 November 2026 (primary source) Last reviewed 4 November 2026