Anthropic donates the Agent Skills open standard to the Agentic AI Foundation and says 70+ platforms have integrated it, after donating MCP to the AAIF in 2025
Today, we're donating Agent Skills, the open standard that gives AI agents specialized knowledge and workflows, to the Agentic AI Foundation (AAIF).
Context & Ripple Effects
Anthropic had already helped make agent-building infrastructure more portable through its 2025 API release, which included an MCP connector for agent builders, and its earlier MCP donation to AAIF. Claude Code’s September adoption of the AGENTS.md instructions specification added another cross-company standard to that stack.
Agent Skills moves the reusable-knowledge and workflow layer into the same foundation. Anthropic says more than 70 platforms have integrated it; public comments from its developers frame AAIF’s next work as versioned releases, a formal proposal process, and security guidance.
First-order effects
- AAIF becomes the steward of Agent Skills, giving its existing implementers a shared governance home alongside MCP rather than leaving the specification solely under Anthropic.
- Anthropic says existing Skill users keep their licenses and can use or contribute to the standard without joining AAIF, limiting disruption for the platforms that have already implemented it.
Second-order effects
- Agent-platform vendors that want compatibility with the reported 70-plus integrations face stronger pressure to support the foundation-governed specification rather than maintain proprietary workflow formats.
- AAIF’s proposed release and security processes would shift differentiation among adopters away from the basic Skill format and toward the quality of their agent tooling and implementations.
Third-order effects
- If MCP, AGENTS.md, and Agent Skills continue to converge under AAIF governance, the agent ecosystem is moving toward a layered interoperability stack for connections, instructions, and reusable workflows.
- Security guidance for skill authors and users would make standards governance part of the agent software supply chain, not merely a developer-convenience exercise.
The trend: Agent infrastructure is consolidating around foundation-governed open specifications that let competing platforms share core interfaces while competing on execution and tooling.