Agent Skills donated to the Agentic AI Foundation
Confirmed
The takeaway
On Oct 22, 2026 Anthropic donated Agent Skills, its open standard for packaging agent know-how as folders with a SKILL.md file, to the Agentic AI Foundation (AAIF) under the Linux Foundation, which already hosts MCP.
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- 3 of 5
- Last verified
- 23 October 2026
Your AI and this story
- GPT-6 Astra175 days after its cutoff
- Claude Opus 5.5114 days after its cutoff
- Gemini 4 Argon205 days after its cutoff
- Grok 4.7144 days after its cutoff
None of these four assistants can know about it. The closest, Claude Opus 5.5, stops 114 days before it.
Key facts
- Donated: the Agent Skills standard plus its name and logo, the GitHub organization and the agentskills.io domain, to AAIF (Linux Foundation), co-founded by Anthropic, Block and OpenAI
- Format: a skill is a folder with a SKILL.md file and optional scripts or reference files; Anthropic published the standard in December 2025 after developing skills for Claude Code
- Adoption (Anthropic): 70+ agent platforms, including ChatGPT, Cursor, GitHub Copilot and VS Code; ~1 million skills published; nearly 280 million installs
- Governance: maintained by engineers from Anthropic, Google, OpenAI and others acting as individuals; Lead Maintainers David Soria Parra and Mahesh Murag; organizations can use or contribute without joining AAIF
- Roadmap: versioned releases, a formal proposal process, and security guidance for skill authors and installers
What happened
Anthropic handed its second agent standard to the Linux Foundation’s Agentic AI Foundation, ten months after MCP. Skills started as a Claude Code feature and became a de facto cross-vendor format; the donation puts its specification under neutral governance.
Why it matters
With MCP (tools) and Agent Skills (procedural know-how) both at AAIF, the two most widely adopted agent-extension formats now sit outside any single lab. The install numbers also show the scale of a new software-supply-chain surface, which is why the roadmap promises security guidance for people installing skills.
Sources
2 sources from 2 sites. Numbers match the chips in the text.
2 sources: 1 primary, 1 reaction
Primary
- Anthropic: Donating Agent Skills to the Agentic AI Foundation (Oct 22, 2026)anthropic.com, official
Reactions
- Simon Willison: Donating Agent Skills to the Agentic AI Foundationsimonwillison.net, discussion
Changes
- Filed (Simon Willison, Techmeme)