beagle
Claude Code plugin for code review skills and verification workflows. Python, Go, React, FastAPI, BubbleTea, and AI frameworks (Pydantic AI, LangGraph, Vercel AI SDK).
beagle

Image: NASA, Public Domain. Source
A Claude Code plugin marketplace for code review and verification workflows. Catch issues before you push with pre-commit reviews for Python, Go, Rust, Elixir, React, iOS/Swift, and AI frameworks.
Powers the agents in Amelia. For automated review-fix-test loops, see Daydream.
Installation
Prerequisites:
- Claude Code CLI installed
- agent-browser for the
run-test-planskill (optional)
# Add the marketplace
claude plugin marketplace add https://github.com/existential-birds/beagle
# Install the plugins you need
claude plugin install beagle-core@existential-birds
claude plugin install beagle-python@existential-birds
claude plugin install beagle-react@existential-birds
Verify installation by opening a new Claude Code session and confirming the plugin's skills appear.
To update: claude plugin marketplace update existential-birds && claude plugin update <plugin-name>
Troubleshooting:
- "Marketplace file not found": Remove stale entries from
~/.claude/plugins/known_marketplaces.jsonand restart Claude Code. - Plugin not updating: Run
claude plugin marketplace update existential-birdsto refresh the marketplace.
Other Agents
Use the skills CLI to install beagle skills for other AI agents:
npx skills add existential-birds/beagle
This downloads the skills and configures them for your agent. Codex users can install the same skills by linking each plugin into ~/.agents/skills/ (see .codex/INSTALL.md).
Plugins
| Plugin | Skills | Category |
|---|---|---|
| beagle-core | 18 | Shared workflows, verification, git |
| beagle-python | 7 | Python, FastAPI, SQLAlchemy, pytest |
| beagle-go | 13 | Go, BubbleTea, Wish SSH, Prometheus |
| beagle-elixir | 11 | Elixir, Phoenix, LiveView, ExUnit, ExDoc |
| beagle-ios | 16 | Swift, SwiftUI, SwiftData, iOS frameworks |
| beagle-react | 16 | React, React Flow, shadcn/ui, Tailwind |
| beagle-rust | 8 | Rust, tokio, axum, sqlx, serde |
| beagle-ai | 13 | Pydantic AI, LangGraph, DeepAgents |
| beagle-docs | 10 | Documentation quality, AI writing detection (Diataxis) |
| beagle-analysis | 8 | Brainstorming, 12-Factor, ADRs, LLM-as-judge |
| beagle-testing | 2 | Test plan generation and execution |
| Total | 122 |
Skills
These are the canonical skill entry points for Beagle. Former command workflows now live as skills.
beagle-core
| Skill | Description |
|---|---|
review-plan <path> |
Review implementation plans |
review-llm-artifacts |
Detect LLM coding artifacts |
fix-llm-artifacts |
Fix detected artifacts |
commit-push |
Commit and push changes |
create-pr |
Create PR with template |
gen-release-notes <tag> |
Generate release notes |
receive-feedback <path> |
Process review feedback |
fetch-pr-feedback |
Fetch bot comments from PR |
respond-pr-feedback |
Reply to bot comments |
skill-builder |
Create new skills |
prompt-improver |
Optimize prompts |
Code Review Skills
| Skill | Plugin | Description |
|---|---|---|
review-python |
beagle-python | Python/FastAPI code review |
review-frontend |
beagle-react | React/TypeScript code review |
review-go |
beagle-go | Go code review |
review-tui |
beagle-go | BubbleTea TUI code review |
review-ios |
beagle-ios | iOS/SwiftUI code review |
review-elixir |
beagle-elixir | Elixir/Phoenix code review |
review-rust |
beagle-rust | Rust/tokio/axum code review |
Documentation & Analysis Skills
| Skill | Plugin | Description |
|---|---|---|
draft-docs <prompt> |
beagle-docs | Generate documentation drafts |
improve-doc <path> |
beagle-docs | Improve docs using Diataxis |
ensure-docs |
beagle-docs | Documentation coverage check |
review-ai-writing |
beagle-docs | Detect AI writing patterns |
humanize |
beagle-docs | Fix AI writing with safe/risky classification |
12-factor-apps-analysis |
beagle-analysis | 12-Factor compliance check |
llm-judge |
beagle-analysis | Compare implementations |
write-adr |
beagle-analysis | Generate ADRs from decisions |
Testing Skills
| Skill | Plugin | Description |
|---|---|---|
gen-test-plan |
beagle-testing | Generate YAML test plan |
run-test-plan |
beagle-testing | Execute test plan |
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