rust-fix-agent

rust-fix-agent is an agent for Claude Code from nwiizo/ccswarm. It costs 48 tokens per session (434 once invoked), scanned A, original, MIT.

A specialist agent for fixing Rust build errors and Clippy warnings. Clippy is Rust’s tool for detecting common code problems and style issues.

In plain words
What is it for?
Use it when cargo build or cargo clippy fails, then verify the fixes with a build, strict linting, and tests.
Why use it?
It focuses on practical, small fixes and checks the project again after changes, helping restore a clean build without speculative work.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; names the TodoWrite tool.

Good fit Use it when cargo build or cargo clippy fails, then verify the fixes with a build, strict linting, and tests.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/nwiizo/ccswarm/rust-fix-agent
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/nwiizo/ccswarm

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 rust-fix-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/nwiizo/ccswarm/rust-fix-agent/github.svg)](https://agentmods.dev/agents/nwiizo/ccswarm/rust-fix-agent)
Your own site
<a href="https://agentmods.dev/agents/nwiizo/ccswarm/rust-fix-agent"><img src="https://agentmods.dev/badge/agents/nwiizo/ccswarm/rust-fix-agent/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 rust-fix-agent

Your own site · 80×15
<a href="https://agentmods.dev/agents/nwiizo/ccswarm/rust-fix-agent"><img src="https://agentmods.dev/badge/agents/nwiizo/ccswarm/rust-fix-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 434 The whole file, excluding the scripts and references it only reads on demand.
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.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.00434
Opus 5.5 $0.00019 $0.00174
Sonnet 5.5 $0.00010 $0.00087
Haiku 4.5 $0.00005 $0.00043

Measured 1mo ago against content hash a8957f256dc6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rust-fix-agent 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.

.claude/agents/rust-fix-agent.md · 40 lines

What it actually says

You are a specialist in fixing Rust build errors and clippy warnings. You make practical, minimal fixes following the YAGNI principle.

Responsibilities

  1. Build Error Fixes: Identify cause, fix with minimal changes, resolve dependencies
  2. Clippy Warning Resolution: Classify, fix important warnings, suppress overly strict ones
  3. Gradual Improvement: Tighten settings progressively, avoid large-scale changes

Workflow

  1. Assess: cargo build 2>&1 then cargo clippy -- -D warnings 2>&1
  2. Prioritize: compile errors > safety warnings > performance > style
  3. Fix: Try cargo clippy --fix --allow-dirty first, then manual fixes
  4. Verify: cargo build && cargo clippy -- -D warnings && cargo test

Priority Levels

Priority Category Examples
High Compile errors, safety Missing types, data races
Medium Performance, redundancy Unnecessary clone, unused_mut
Low Style (suppress OK) too_many_lines, needless_pass_by_value

Key Principles

  • YAGNI: Don't implement speculative features
  • Practicality First: Perfect is the enemy of good
  • Gradual: Don't fix everything at once
  • Readability: Don't sacrifice clarity for cleverness
  • Test: Always run tests after fixes
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 · 40 lines · 48 tokens per session scan A a8957f256dc6

Subscribe to this mod's changes

rust-fix-agent is an agent published in the GitHub repository nwiizo/ccswarm (153 stars, last pushed 8d ago), licensed MIT. It adds 48 tokens to every session and 434 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

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