Anthropic Donates Agent Skills Standard to the Agentic AI Foundation (AAIF)

Anthropic has donated Agent Skills — the open standard that gives AI agents specialized knowledge and workflows — to the Agentic AI Foundation (AAIF) under the Linux Foundation, transferring the standard's name, logo, GitHub organization, and agentskills.io domain to a vendor-neutral home. The move matters because Agent Skills already claims adoption across more than 70 agent platforms and reports 1 million published skills and nearly 280 million installs, so control of the standard now sits with a foundation rather than a single AI lab.

What was donated, exactly

Anthropic is transferring ownership of the Agent Skills standard to the Agentic AI Foundation (AAIF), which operates under the Linux Foundation. The donation covers three concrete assets:

  • The Agent Skills name and logo
  • The GitHub organization that hosts the standard
  • The agentskills.io domain

The AAIF will provide a neutral home for the standard going forward, with the stated goal that the community has a say in where Agent Skills goes next. Anthropic emphasizes that anyone can continue to use the standard or contribute to it without joining the AAIF.

This is the second standard Anthropic has handed to the same foundation. Anthropic co-founded the AAIF with Block and OpenAI, and previously donated the Model Context Protocol (MCP) to it.

What an Agent Skill actually is

A skill is a folder containing a SKILL.md file that teaches an agent a specific task or domain, along with any scripts or reference material it needs.

That simplicity is the defining design choice. A skill is not a model, an API, or a proprietary runtime — it is a file-based unit of procedural knowledge that any agent platform can load, which is why multiple competing agent platforms can implement the same standard.

Why Anthropic built Agent Skills

Anthropic developed Agent Skills while working on Claude Code. The company states that Claude Code handled general knowledge work well but often lacked the procedural knowledge that real business tasks need — the gap Agent Skills were designed to fill.

Within weeks of the October 2025 launch, developers published thousands of skills on GitHub and wrote loaders for Codex, Cursor, and OpenCode. Anthropic then published Agent Skills as an open standard under its own GitHub organization and domain so that any agent could use it.

Adoption numbers reported by Anthropic

  • More than 70 agent platforms have integrated Agent Skills, including ChatGPT, Cursor, GitHub Copilot, and VS Code.
  • 1 million skills have been published.
  • Nearly 280 million skill installs have occurred.
  • The standard was published as an open standard in December 2025, following the October 2025 launch.

Who maintains Agent Skills now

Engineers from Anthropic, Google, OpenAI, and other companies will maintain the standard as individuals rather than as company representatives. David Soria Parra and Mahesh Murag are the Lead Maintainers.

The individual-maintainer model is a common foundation pattern: contributors act in a personal capacity, which reduces the ability of any single vendor to steer the specification.

The proposed roadmap

Anthropic has proposed an initial roadmap for the standards process, covering three items:

  1. Versioned releases of the specification
  2. A formal proposal process for specification changes
  3. Security guidance for people who write and install skills

Anthropic states that, as with MCP, the project will continue to prioritize community input and transparent decision-making. Developers can join the project's Discord server to give feedback on proposed specification changes, read the specification at agentskills.io, and participate on GitHub at github.com/agentskills/agentskills.

Practical implications

For agent platform builders: Agent Skills is now a foundation-governed standard rather than a single-vendor specification. Platforms that integrate it are building against a neutral artifact, and future specification changes will run through the proposal process described in the roadmap rather than being decided by Anthropic alone.

For skill authors: Existing skills continue to work, and contributing does not require AAIF membership. The promised security guidance for writing and installing skills is the item most directly relevant to anyone distributing skills, since installing a skill means running scripts and reference material supplied by a third party.

For the broader ecosystem: The governance structure now mirrors MCP's, with both standards living under the same foundation and overlapping groups of maintainers. That consolidation makes the AAIF a central venue for agent interoperability standards.

Background context

The source material is Anthropic's own announcement and does not include third-party commentary, counterarguments, or independent verification of the adoption figures. The numbers cited — more than 70 platforms, 1 million skills published, nearly 280 million installs — are Anthropic's reported figures. The announcement contains no direct quotes from Anthropic executives, AAIF representatives, or the named Lead Maintainers.

Timeline as stated in the announcement:

  • October 2025: Agent Skills launched.
  • December 2025: Agent Skills published as an open standard under its own GitHub organization and domain.
  • Following year: Anthropic co-founds the AAIF with Block and OpenAI and donates MCP to it.
  • October 22, 2026: Anthropic donates Agent Skills to the AAIF.

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