Agentic AI Foundation (AAIF)

Agentic AI Foundation (AAIF) is a neutral, open foundation under the Linux Foundation that hosts the open protocols and open-source projects that AI agents use to find tools, follow instructions, run, and talk to each other. As of October 2026 it is home to the Model Context Protocol (MCP), the Agent2Agent protocol (A2A), AGENTS.md, goose and agentgateway.

Origins

The Linux Foundation announced the AAIF on December 9, 2025. Three companies contributed its first projects: Anthropic donated MCP, Block donated the goose agent framework, and OpenAI donated AGENTS.md, a plain-text convention for giving coding agents project-specific instructions. The platinum members at launch were Amazon Web Services, Anthropic, Block, Bloomberg, Cloudflare, Google, Microsoft and OpenAI. Linux Foundation executive director Jim Zemlin said that bringing the projects together "ensures they can grow with the transparency and stability that only open governance provides."

The Five Hosted Projects

AAIF describes its portfolio as covering five layers of the agent stack:

  • AGENTS.md — instructions and context: a file in a repository that tells any agent how the project is built, tested and styled.
  • goose — an open-source agent runtime.
  • MCP — agent-to-tool connectivity: how agents connect to tools, data sources, applications and services.
  • agentgateway — traffic mediation and control between agents, tools and models.
  • A2A — agent-to-agent interoperability: how agents discover each other, delegate tasks and work across frameworks and vendors.

Together they cover most of what an agent needs to interoperate: context going in, a runtime to execute, a protocol for tools, a gateway for policy, and a protocol for talking to other agents. The collection is deliberately layered rather than competing. MCP and A2A in particular are often confused, but they work at different layers: MCP connects one agent to its tools, while A2A connects agents to other agents.

A2A Joins (August 2026)

On August 17, 2026, A2A joined the AAIF. Google launched A2A in April 2025 and donated it to the Linux Foundation with founding organizations including AWS, Cisco, Google, Microsoft, Salesforce, SAP and ServiceNow; it had been a separate Linux Foundation project until it moved under AAIF. AAIF says A2A is "backed by over 150 organizations", and that those partners include direct competitors. With A2A's arrival, the two most widely adopted agent protocols — one from Anthropic, one from Google — sit under the same neutral roof.

MCP's July 2026 Specification

The most significant release under AAIF stewardship so far is the MCP specification dated 2026-07-28, which followed a release candidate published on May 21, 2026. The MCP project describes it as "a stateless core that scales on ordinary HTTP infrastructure", with extensions for server-rendered interfaces (MCP Apps) and long-running work (the Tasks extension), authorization aligned more closely with OAuth and OpenID Connect, and "a formal deprecation policy so the protocol can evolve without breaking what you've built." Its Tier 1 SDKs see "close to half-a-billion downloads a month."

AAIF published the migration guidance on its own blog. That guide explains the end of the session handshake (every request now carries its own client information), the new server/discover method for on-demand capability discovery, and four deprecations — Roots, Sampling, Logging and the old HTTP+SSE transport — with a minimum 12-month window, putting the earliest removal date at July 28, 2027. Publishing migration guidance through the foundation, rather than through any one vendor's developer blog, is a small but telling sign of how MCP is now governed.

Why Neutral Governance Matters

Agent protocols only pay off if they are everywhere. An enterprise will wire its systems to MCP or A2A only if it believes the protocol won't be steered to favor one model vendor, and a competitor will implement a rival's protocol only if it gets a voice in how it evolves. Moving MCP out of Anthropic and A2A out of Google into a Linux Foundation body addresses both concerns. Trademark, roadmap and specification process belong to the foundation, so OpenAI, Google, Microsoft and AWS can ship MCP support without depending on a rival's goodwill.

Neutral governance also makes slow, disciplined change possible. The 2026-07-28 MCP release is a good example: a breaking architectural shift (stateless requests) arrived with a release-candidate period, published migration paths, and a deprecation policy measured in years rather than weeks. That predictability is what lets platforms build on the protocol — Anthropic's Claude Marketplace, launched in September 2026 with more than 2,000 connectors and plugins, is built on MCP and Agent Skills.

Significance

In 2026 agent standards consolidated. Before AAIF, the agentic web risked splitting into vendor-aligned protocol camps. Now the main tool, agent-to-agent and instruction-file standards sit under one Linux Foundation umbrella, with commerce-specific protocols such as the Universal Commerce Protocol governed separately. For builders of work agents, AI coding tools and agentic commerce systems, AAIF is increasingly the place to watch for the rules that agents will follow.

Further Reading