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-plan skill (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.json and restart Claude Code.
• Plugin not updating: Run claude plugin marketplace update existential-birds to 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 |