beagle-rust

beagle-rust is a plugin for Claude Code from existential-birds/beagle. Its manifest loads nothing; the 11 skills it bundles cost 681 tokens per session together, scanned A, original, Apache-2.0.

A Rust development and code-review skill covering Rust language features and several common libraries. Rust is a programming language that uses ownership and borrowing rules to manage memory safely.

In plain words
What is it for?
Use it when writing or reviewing Rust involving Tokio asynchronous work, Serde data conversion, SQLx database access, Axum web services, macros, FFI, unsafe code, or tests.
Why use it?
It provides guidance for areas that are often difficult in Rust, such as lifetimes, asynchronous code, concurrency, unsafe code, and error handling. It also covers patterns used by libraries for web services, databases, serialization, and foreign-function interfaces.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it when writing or reviewing Rust involving Tokio asynchronous work, Serde data conversion, SQLx database access, Axum web services, macros, FFI, unsafe code, or tests.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add existential-birds/beagle
/plugin install beagle-rust
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.

agentmods badge for beagle-rust

README.md
[![agentmods](https://agentmods.dev/badge/plugins/existential-birds/beagle/beagle-rust/github.svg)](https://agentmods.dev/plugins/existential-birds/beagle/beagle-rust)
Your own site
<a href="https://agentmods.dev/plugins/existential-birds/beagle/beagle-rust"><img src="https://agentmods.dev/badge/plugins/existential-birds/beagle/beagle-rust/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.

agentmods 80×15 button for beagle-rust

Your own site · 80×15
<a href="https://agentmods.dev/plugins/existential-birds/beagle/beagle-rust"><img src="https://agentmods.dev/badge/plugins/existential-birds/beagle/beagle-rust.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 11 skills cost 681 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-rust 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-rust/.claude-plugin/plugin.json · 34 lines

What it actually says

{
  "name": "beagle-rust",
  "description": "Rust code review and development skills covering ownership, lifetimes, error handling, async/tokio, serde, sqlx, axum, macros, FFI, unsafe, concurrency, and testing patterns.",
  "version": "1.8.0",
  "author": {
    "name": "Existential Birds, LLC",
    "email": "[email protected]"
  },
  "repository": "https://github.com/existential-birds/beagle",
  "keywords": [
    "rust",
    "ownership",
    "lifetimes",
    "borrowing",
    "tokio",
    "async",
    "serde",
    "sqlx",
    "axum",
    "thiserror",
    "tracing",
    "cargo",
    "code-review",
    "concurrency",
    "type-safety",
    "macros",
    "proc-macro",
    "ffi",
    "unsafe",
    "no-std",
    "pinning"
  ]
}
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.

  1. 1mo ago First seen · 34 lines scan A a6fd8e736574

Subscribe to this mod's changes

beagle-rust 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.