rust-engineer

rust-engineer is an agent for Claude Code from GoogilyBoogily/googilyboogily-claude-power-tools. It costs 36 tokens per session (322 once invoked), scanned A, original, MIT.

A Rust programming specialist for ownership and borrowing rules, asynchronous code, unsafe code reviews, performance, and Cargo workspaces. Rust is a programming language designed for fast software with strong memory-safety checks.

In plain words
What is it for?
Use it to resolve borrow-checker and lifetime errors, review unsafe code, improve Rust performance, or manage multi-package Cargo projects.
Why use it?
It focuses Rust-specific problems and includes checks such as compilation, linting, and tests to catch mistakes before delivery.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the systems-agents plugin — 2 agents shipped together

Good fit Use it to resolve borrow-checker and lifetime errors, review unsafe code, improve Rust performance, or manage multi-package Cargo projects.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/googilyboogily/googilyboogily-claude-power-tools/rust-engineer
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/GoogilyBoogily/googilyboogily-claude-power-tools

Made for: Claude Code.

Or install systems-agents, the plugin that ships this one along with the rest of its 2 agents.

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-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/googilyboogily/googilyboogily-claude-power-tools/rust-engineer/github.svg)](https://agentmods.dev/agents/googilyboogily/googilyboogily-claude-power-tools/rust-engineer)
Your own site
<a href="https://agentmods.dev/agents/googilyboogily/googilyboogily-claude-power-tools/rust-engineer"><img src="https://agentmods.dev/badge/agents/googilyboogily/googilyboogily-claude-power-tools/rust-engineer/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-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/googilyboogily/googilyboogily-claude-power-tools/rust-engineer"><img src="https://agentmods.dev/badge/agents/googilyboogily/googilyboogily-claude-power-tools/rust-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 322 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 $0.00036 $0.00322
Opus 5 $0.00018 $0.00161
Sonnet 5 $0.00007 $0.00064
Haiku 4.5 $0.00004 $0.00032

Measured 9d ago against content hash f35e01aaa702, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

rust-engineer 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 9d 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/systems-agents/agents/rust-engineer.md · 42 lines

What it actually says

Rust Engineer

You are a Rust engineer specializing in Rust 2021 edition systems programming, memory safety, and zero-cost abstractions.

Step 0: Route or Stay

Before starting, verify the task is within scope. Delegate otherwise:

Signal Route to
Non-Rust system profiling or benchmarking performance-engineer
Database query optimization optimizer
CI/CD pipeline or deployment issues devops-expert

STOP Conditions

  • Task is non-Rust system profiling — hand to performance-engineer
  • Problem is general performance tuning unrelated to Rust — stop
  • Fix delivered, remaining issue is in another domain — stop

Methodology

  1. Assess the Rust project structure, edition, and dependency graph
  2. Analyze the specific issue (ownership, lifetimes, async, unsafe, performance)
  3. Implement using idiomatic Rust patterns with safety guarantees
  4. Run cargo check / cargo clippy / cargo test to verify

Safety Rules

  • NEVER use unsafe without documenting the safety invariant in a comment
  • Prefer zero-copy and borrowing over cloning unless clarity demands it
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. 9d ago First seen · 42 lines · 36 tokens per session scan A f35e01aaa702

Subscribe to this mod's changes

rust-engineer is an agent published in the GitHub repository GoogilyBoogily/googilyboogily-claude-power-tools (2 stars, last pushed 4mo ago), licensed MIT. It adds 36 tokens to every session and 322 once invoked, about $0.0002 per session on Opus 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 2026-09-03.

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