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Beagle is an Agent Skills marketplace: framework-aware code review, documentation, testing, architectural analysis, and git workflows for any compatible coding agent. Skills cover Python, Go, Rust, Elixir, React, Remix v2, and iOS/Swift.
Install for any agent: npx skills add existential-birds/beagle. Then your agent loads the right skill automatically, or you run one by name (for example review-python).
Pairs with Amelia for agent-based workflows and Daydream for automated review-fix-test loops.
Prerequisites:
- A coding agent that supports Agent Skills
- agent-browser for the
run-test-planskill (optional)
Install with the skills CLI:
npx skills add existential-birds/beagleThis downloads the skills and configures them for your agent. Codex users: see .codex/INSTALL.md and docs/README.codex.md.
claude plugin marketplace add https://github.com/existential-birds/beagle
claude plugin install beagle-core@existential-birdsInstall additional plugins as needed (for example beagle-python@existential-birds). Update with:
claude plugin marketplace update existential-birds && claude plugin update <plugin-name>If a marketplace file is reported missing, remove stale entries from ~/.claude/plugins/known_marketplaces.json and restart.
Each plugin's README lists its skills. For every skill in one place, see the full catalog.
| Plugin | Coverage |
|---|---|
| beagle-core | Shared workflows, verification, git, skill tooling |
| beagle-python | Python, FastAPI, SQLAlchemy, PostgreSQL, pytest |
| beagle-go | Go, BubbleTea, Wish SSH, Prometheus |
| beagle-elixir | Elixir, Phoenix, LiveView, ExUnit, ExDoc |
| beagle-ios | Swift, SwiftUI, SwiftData, iOS frameworks |
| beagle-react | React, React Flow, shadcn/ui, Tailwind, Remix v2 |
| beagle-rust | Rust, tokio, axum, sqlx, serde |
| beagle-docs | Documentation quality, AI-writing detection (Diataxis) |
| beagle-analysis | Brainstorming, ADRs, strategy, LLM-as-judge, TDD planning |
| beagle-testing | Test plan generation and execution |
Your agent discovers every skill automatically; these are the headline ones, grouped by task. The full catalog lists them all.
Code review — review-python, review-frontend, review-remix-v2 (beagle-react); review-go, review-tui (beagle-go); review-rust, review-elixir, review-ios.
Git & feedback — commit-push, create-pr, gen-release-notes, fetch-pr-feedback, respond-pr-feedback, receive-feedback.
LLM artifacts — review-llm-artifacts, verify-llm-artifacts, fix-llm-artifacts.
Docs — improve-doc, draft-docs, ensure-docs, review-ai-writing, humanize-beagle.
Analysis & planning — review-plan, write-adr, brainstorm-beagle, write-plan, quick-plan, llm-judge, strategy-interview, prfaq-beagle, web-research.
Testing — gen-test-plan, run-test-plan.
Skill tooling — skill-builder, review-skill.