opensource

Agent Skills defines a specification and documentation for giving AI agents reusable capabilities.

github.com/agentskills/agentskills
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About opensource

Agent Skills defines an open format for giving AI agents reusable capabilities. A skill is a folder with a SKILL.md file holding name, description, and task instructions, with optional scripts, reference materials, templates, and other files.

Agents load only names and descriptions at startup, read the full SKILL.md when a task matches, then follow the instructions and run bundled code or referenced files as needed. Skills work with skills-compatible agents and tools; code in the repository is licensed under Apache 2.0 and documentation under CC-BY-4.0.

Key features

  • Define skills as folders with SKILL.md metadata and instructions
  • Bundle scripts, references, templates, and assets with skills
  • Load names at startup and full instructions when relevant
  • Package team-specific context into portable version-controlled folders
  • Reuse the same skill across skills-compatible agents and tools
  • Execute bundled code or load referenced files during tasks
Best for: Developers and teams creating reusable task instructions for skills-compatible AI agents.
Good for
  • Open format released as an open standard with ecosystem contributions
  • Portable version-controlled folders carry team-specific procedures
  • Progressive disclosure keeps full instructions unloaded until needed

opensource at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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opensource FAQ

What is included in a skill?
A folder with a required SKILL.md file containing at least name and description plus instructions, and optional scripts, references, assets, and other files.
How do agents load skills?
Through discovery of names and descriptions at startup, activation by reading the full SKILL.md when relevant, and execution of the instructions with optional code or referenced files.
What license applies to the repository?
Code is licensed under Apache 2.0 and documentation under CC-BY-4.0, with details in individual directories.
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