What is beagle-react?

A React code-review add-on covering React, React Flow, React Router, Remix, shadcn/ui, Tailwind, Vitest, and Zustand. These are tools for building interfaces, routing web pages, styling, testing, and managing application state.

Use it for code reviews in projects that use one or more of the listed React and web-development tools.

The supplied information only says that it performs code review across these technologies; it does not describe specific review checks.

beagle-react — Plugin for Claude Code by existential-birds/beagle

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/existential-birds/beagle

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/existential-birds/beagle/beagle-react/github.svg)](https://agentmods.dev/plugins/existential-birds/beagle/beagle-react)

Your own site

<a href="https://agentmods.dev/plugins/existential-birds/beagle/beagle-react"><img src="https://agentmods.dev/badge/plugins/existential-birds/beagle/beagle-react/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/existential-birds/beagle/beagle-react"><img src="https://agentmods.dev/badge/plugins/existential-birds/beagle/beagle-react.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 27 skills cost 1,661 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

beagle-react scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/beagle-react/.claude-plugin/plugin.json · 24 lines

What it actually says

{
  "name": "beagle-react",
  "description": "React, React Flow, React Router, Remix v2, shadcn/ui, Tailwind v4, Vitest, and Zustand code review. Pairs with beagle-core for full workflow.",
  "version": "1.5.0",
  "author": {
    "name": "Existential Birds, LLC",
    "email": "[email protected]"
  },
  "repository": "https://github.com/existential-birds/beagle",
  "keywords": [
    "react",
    "react-flow",
    "react-router",
    "remix",
    "remix-v2",
    "shadcn",
    "tailwind",
    "vitest",
    "zustand",
    "typescript",
    "code-review"
  ]
}

Contents

What it installs

The manifest is a name and a version. 27 skills travel with it, and installing the plugin installs all of them — 1,661 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 24 lines scan A 4f4a1c44ea6a

Subscribe to this mod's changes

beagle-react is a plugin published in the GitHub repository existential-birds/beagle (82 stars, last pushed 1mo ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-16.

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