Right now, agent skills are static SKILL.md packages that only work if you pre-install them into each agent or tool, and not all agents support them. Agents can't discover and learn skills on the fly as they encounter tasks.

I built Skyll to change that. Skyll is open source for AI agents to discover and learn skills autonomously.

Skyll: - Crawls and indexes skills across sources (Github, skills.sh, etc) so they’re queryable by intent and content, not just by names or tags

- Scores skills by relevance and popularity

- Serves full SKILL.md content (and references) through a REST API or MCP server

- Lets agents fetch skills at runtime without manual installs

It's 100% open source. We're also building a community registry so anyone can add skills and make them available to all agents. Would love any feedback!

Repo: https://github.com/assafelovic/skyll Homepage: https://skyll.app Docs: https://skyll.app/docs