beagle
What it is
Beagle is a Markdown marketplace of Agent Skills. It contains 132 active skill entry points across 10 active plugins, plus 13 deprecated beagle-ai skills kept on disk for backward compatibility. The active plugins cover stack-aware code review, documentation quality, test planning, git and PR workflows, feedback handling, strategy work, research, and implementation planning.
Daydream uses Beagle review skills as its per-stack review backends. Amelia documents Beagle as companion Claude Code tooling for PR and review workflows.
The repository has no package build step. The shipped artifact is Markdown: SKILL.md files, reference Markdown, one marketplace manifest, plugin metadata, and validation scripts.
Documentation
| Page | Use it for |
|---|---|
| Install and agent compatibility | skills CLI, Claude Code marketplace install, Codex flat-skill setup |
| Skill catalog | active plugins, skill counts, deprecated beagle-ai, catalog links |
| Review verification | anti-confabulation gate, evidence gates, feedback logs, skill improvement loop |
| Portability and contributing | Agent Skills spec constraints, portability scan, frontmatter validation, release process |
Quick install
Install Beagle for agents that support the skills CLI:
npx skills add existential-birds/beagle
Install the Claude Code marketplace, then install the plugin you need:
claude plugin marketplace add https://github.com/existential-birds/beagle
claude plugin install beagle-core@existential-birds
Codex-style agents use a flat skill directory. Link active skill directories into ~/.agents/skills/ using the repo's Codex install guide.