Skills#Claude Code #Codex #Any agent#Coding #Code review #Testing

Agent Skills marketplace for Claude Code and Codex

Beagle packages reusable skills for common agent work: reviewing code, drafting docs, planning tests, analyzing architecture, and handling git tasks. The skills are split into plugins by stack and workflow, so the right one can be loaded automatically or run by name.

80 stars•8 forks•Shell•Updated 1mo ago

Who it's for

Builders who want their agent to follow reusable skills for review, docs, testing, and git work.

What it delivers

You can give your agent stack-specific skills instead of re-explaining the same workflow each time.

What it does

Stack-specific review skills

Includes review skills for Python, Go, Rust, Elixir, React, Remix v2, and iOS/Swift.

Documentation skills

Includes doc-focused skills such as improve-doc, draft-docs, ensure-docs, and review-ai-writing.

Testing skills

Includes gen-test-plan and run-test-plan for planning and executing tests.

Git workflow skills

Includes commit-push, create-pr, fetch-pr-feedback, respond-pr-feedback, and release-note helpers.

Analysis and planning skills

Includes review-plan, write-adr, brainstorm-beagle, write-plan, quick-plan, and llm-judge.

Plugin-based layout

Splits skills into `beagle-core`, `beagle-python`, `beagle-go`, `beagle-elixir`, `beagle-ios`, `beagle-react`, `beagle-rust`, `beagle-docs`, `beagle-analysis`, and `beagle-testing`.

How to get it

1Install with the skills CLI
```
npx skills add existential-birds/beagle
```

2Run

claude plugin marketplace add https://github.com/existential-birds/beagle
claude plugin install beagle-core@existential-birds

3Install additional plugins as needed (for example beagle-python@existential-birds).…
```
claude plugin marketplace update existential-birds && claude plugin update <plugin-name>
```

README

beagle

Apollo 10 astronaut Thomas P. Stafford pats the nose of a stuffed Snoopy

Image: NASA, Public Domain. Source

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.

Installation

Prerequisites:

A coding agent that supports Agent Skills
agent-browser for the run-test-plan skill (optional)

Any coding agent

Install with the skills CLI:

npx skills add existential-birds/beagle

This downloads the skills and configures them for your agent. Codex users: see .codex/INSTALL.md and docs/README.codex.md.

Claude Code

claude plugin marketplace add https://github.com/existential-birds/beagle
claude plugin install beagle-core@existential-birds

Install 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.

Plugins

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

Key skills

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.

Files in the repo

Repository payload•19 top-level entries

.claude— Claude Code skills, agents, commands, hooks
.claude-plugin— Plugin manifest for Claude Code
.codex— 1 item
.github— GitHub workflows and templates
assets— 1 item
docs— Documentation
plugins— Plugins
scripts— Helper scripts
.feedback-log.csv
.gitignore
AGENTS.md— Agent instructions for the repo.
CHANGELOG.md
CLAUDE.md— Claude-facing instructions.
CONTRIBUTING.md
LICENSE— License
llms.txt
PRIVACY.md
README.md— The README
SKILLS.md— Full catalog of available skills.

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