Anthropic hands Agent Skills to the Agentic AI Foundation

In practice a skill is a folder holding a written how-to (the SKILL.md file) and any scripts or documents the agent needs for that job. More than 70 agent platforms have adopted the format since it went public in December 2025, VS Code, Cursor, ChatGPT and GitHub Copilot among them, and Anthropic counts 1 million skills published and close to 280 million installs. The agentskills.io domain, the GitHub organisation, the name and the logo all pass to the foundation, while individual engineers from OpenAI, Google, Anthropic and others stay on as maintainers.

Three more projects joined the same day, SiliconANGLE reports: Alibaba’s OpenSandbox and Hugging Face’s OpenEnv, both for the simulated set-ups labs train models in, and OpenAI’s Open Responses, a shared template for model APIs. The AAIF now runs ten projects, against three at its launch last December.

A workflow written once as a skill, such as a weekly ad report or a variant brief, already runs in ChatGPT, Copilot and Claude, and the donation takes the name, domain and spec out of Anthropic’s hands, so no single AI vendor controls where it goes next.