Review Rust code patterns for ownership, lifetimes, error handling, unsafe code, FFI, macros, async runtime, web frameworks, serialization, and database queries. Scaffold new projects with linting and CI best practices. Verify findings with a multi-step protocol to reduce false positives.
Reviews axum web framework code for routing patterns, extractor usage, middleware, state management, and error handling. Use when reviewing Rust code that uses axum, tower, or hyper for HTTP services. Covers axum 0.7+ patterns including State, Path, Query, Json extractors.
Reviews Rust FFI code for type safety, memory layout compatibility, string handling, callback patterns, and unsafe boundary correctness. Use when reviewing extern blocks, #[repr(C)] types, bindgen output, or code calling C/C++ libraries.
Reviews Rust macro code for hygiene issues, fragment misuse, compile-time impact, and procedural macro patterns. Use when reviewing macro_rules! definitions, procedural macros, derive macros, or attribute macros.
Comprehensive Rust code review with optional parallel agents
Mandatory verification steps for all code reviews to reduce false positives. Load this skill before reporting ANY code review findings.
Own this plugin?
Verify ownership to unlock analytics, metadata editing, and a verified badge. GitHub access is read-only (username + org membership).
Sign in to claimOwn this plugin?
Verify ownership to unlock analytics, metadata editing, and a verified badge. GitHub access is read-only (username + org membership).
Sign in to claimBased on adoption, maintenance, documentation, and repository signals. Not a security audit or endorsement.

Image: NASA, Public Domain. Source
Beagle is a Claude Code plugin marketplace with 145 skills across code review, documentation, testing, architectural analysis, and git workflows. Use it to review before you push, detect AI-generated artifacts, draft and improve docs, generate test plans, and analyze codebases — across Python, Go, Rust, Elixir, React, Remix v2, iOS/Swift, and AI frameworks.
Used with Amelia for agent-based workflows and Daydream for automated review-fix-test loops.
Prerequisites:
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 running /beagle-core:commit-push — if the skill loads, the plugin is active.
To update:
claude plugin marketplace update existential-birds && claude plugin update <plugin-name>
Troubleshooting:
~/.claude/plugins/known_marketplaces.json and restart Claude Code.claude plugin marketplace update existential-birds to refresh the marketplace.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: Link each plugin into ~/.agents/skills/ — see .codex/INSTALL.md for setup instructions.
| Plugin | Skills | Category |
|---|---|---|
| beagle-core | 20 | 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-remix-v2 | 12 | Remix v2 route modules, loaders/actions, forms, sessions |
| beagle-rust | 12 | Rust, tokio, axum, sqlx, serde |
| beagle-ai | 13 | Pydantic AI, LangGraph, DeepAgents |
| beagle-docs | 10 | Documentation quality, AI writing detection (Diataxis) |
| beagle-analysis | 13 | Brainstorming, ADRs, strategy, LLM-as-judge, spec gap resolution, TDD plan writing |
| beagle-testing | 2 | Test plan generation and execution |
| Total | 145 | — |
These are the canonical skill entry points for Beagle.
| Skill | Description |
|---|---|
review-plan <path> | Review implementation plans |
review-llm-artifacts | Detect LLM coding artifacts |
verify-llm-artifacts | Confirm or reject review findings before deletes |
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 |
subagent-prompt | Hand off the current session as an orchestrator-plus-subagents prompt for a fresh session |
skill-builder | Create new skills |
prompt-improver | Optimize prompts |
| 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 |
review-remix-v2 | beagle-remix-v2 | Remix v2 code review (loaders, actions, forms, sessions) |
npx claudepluginhub existential-birds/beagle --plugin beagle-rustArchitecture analysis, brainstorming, ADR generation, LLM-as-judge comparison, and spec gap resolution.
Python, FastAPI, SQLAlchemy, PostgreSQL, and pytest code review. Pairs with beagle-core for full workflow.
React, React Flow, React Router, shadcn/ui, Tailwind v4, Vitest, and Zustand code review. Pairs with beagle-core for full workflow.
Shared code review workflows, verification protocol, git commands, and feedback handling. Recommended as a base for all beagle plugins.
Documentation quality, generation, and improvement using Diataxis principles. Pairs with beagle-core for full workflow.
Comprehensive Rust development assistant with meta-question routing, coding guidelines, version queries, and ecosystem support
Expert Rust 1.96+ (2024 edition) — ownership, error handling, async/tokio, axum backends, cargo tooling, with SOLID principles
Comprehensive Rust development skill bringing memory safety, performance optimization, and Rust idioms to AI-assisted systems programming and application development.
Rust development skill with strict coding standards, FAIL FAST error handling, and build/review agents
Comprehensive collection of specialized Rust development agents with Claude Code best practices. Includes rust-modern-apis skill for proactive suggestions of stable Rust APIs added in 1.89–1.97, loaded explicitly at session startup by rust-developer and rust-code-reviewer. team-develop skill for multi-agent collaborative development and team-debug skill for multi-agent root cause investigation (stops at consolidated review, awaits user decision on issues/epic/team-develop handoff), both via Claude Code experimental agent teams. continuous-improvement orchestrator spawns read-only rust-live-tester, rust-researcher, rust-arch-analyst, and rust-security-analyst agents for automated CI cycles; the arch-inspect and security-audit skills back the code-quality and vulnerability audits. Full-cycle SDD orchestrator with BRD/SRS/NFR pipeline (spec-from-stream skill). Autonomous tech-writer agent for user-facing documentation with progressive disclosure. rust-analyzer LSP integration for real-time code intelligence. Handoff protocol via rust-agent-handoff skill for context sharing. Adversarial critic agent for stress-testing designs. Updated for Rust Edition 2024 and modern tooling.
SOTA Rust tooling - refactoring, profiling, benchmarking, testing, SIMD, dependency audit