Skills is a catalog of reusable instruction packages for Codex, an AI agent system, that enables teams and individuals to package and distribute capabilities for completing specific tasks in a repeatable way.
The tool addresses the problem of making AI agent capabilities discoverable and reusable across different contexts. Skills are folders containing instructions, scripts, and resources that Codex agents can discover and apply to perform specialized tasks. The approach organizes skills into system-installed, curated, and experimental categories, with installation handled through a skill-installer command within Codex itself.
Developers should be aware that this repository is deprecated. Current work on Codex skills and plugins has moved to the OpenAI Plugins repository, and the recommended path forward for adding custom skills to Codex is to follow the Build plugins guide in the OpenAI developer documentation. The project remains useful as a reference for understanding how skills were structured and distributed, but new development should target the plugins framework instead.
The project maintains a substantial base of adopters who report issues from real-world use rather than the core team driving the issue backlog. Maintainers typically respond to new issues and pull requests within a few days.
