beagle

Upgrading from beagle v1? The monolithic beagle plugin was split into individual plugins in v2.0.0. If you still have beagle@existential-birds enabled in ~/.claude/settings.json, it now loads as a no-op stub. You can remove it with:

claude plugin uninstall beagle@existential-birds

Then install the individual plugins you need (see Installation below).

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, 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 run-test-plan command (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 running /<plugin-name>: in Claude Code (e.g., /beagle-core:)—you should see the command list.

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. Commands are Claude Code specific and not available through the skills CLI.

Plugins

Plugin	Skills	Commands	Category
beagle-core	8	11	Shared workflows, verification, git
beagle-python	6	1	Python, FastAPI, SQLAlchemy, pytest
beagle-go	6	2	Go, BubbleTea, Wish SSH, Prometheus
beagle-elixir	10	1	Elixir, Phoenix, LiveView, ExUnit, ExDoc
beagle-ios	12	1	Swift, SwiftUI, SwiftData, iOS frameworks
beagle-react	15	1	React, React Flow, shadcn/ui, Tailwind
beagle-ai	13	0	Pydantic AI, LangGraph, DeepAgents
beagle-docs	7	5	Documentation quality, AI writing detection (Diataxis)
beagle-analysis	5	3	12-Factor, ADRs, LLM-as-judge
beagle-testing	0	2	Test plan generation and execution
Total	82	27

Commands

Run with /<plugin-name>:<command>. See Slash commands.

beagle-core

Command	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

Command	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

Documentation & Analysis

Command	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

Command	Plugin	Description
gen-test-plan	beagle-testing	Generate YAML test plan
run-test-plan	beagle-testing	Execute test plan