SKILL.md and the reference files the agent reads on demand.
What’s in it
Install in Claude Code
From your project root, fetch the pack into.claude/skills/ (use ~/.claude/skills/ instead to install it for every project):
Install in other agent tools
Any tool that supports the Agent Skills format uses the same folder: place theonsomble/ directory in that tool’s skills location. For tools without skills support, the files are plain Markdown — read them directly and include what you need in your agent’s instructions.