3b-rust-compiler-analyzer

3b-rust-compiler-analyzer is an agent for Claude Code from trailofbits/skills. It costs 70 tokens per session (4,578 once invoked), scanned A, original, CC-BY-SA-4.0.

A Rust compiler-analysis agent that examines Mid-level IR and LLVM IR, which are internal compiler forms, for each crate. It checks whether compiler optimisations remove secure wiping or leave sensitive data on the stack.

In plain words
What is it for?
It helps audit Rust crates for dead-store removal of wipes, stack retention, and other compiler-level zeroization problems.
Why use it?
Source code can appear to wipe secrets correctly while the compiler changes the generated code. This finds those lower-level failures.

Agent for Claude Code

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

Part of the zeroize-audit plugin — 1 skill, 11 agents, 1 MCP server shipped together

Good fit It helps audit Rust crates for dead-store removal of wipes, stack retention, and other compiler-level zeroization problems.

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Install with agentmods
npx agentmods add agents/trailofbits/skills/3b-rust-compiler-analyzer
About the project

Trail of Bits Skills Marketplace is a collection of Claude Code plugins, skills, agents, commands, and instructions for security analysis, vulnerability detection, code auditing, and development workflows. It is for developers and security researchers using AI-assisted tools to inspect software, smart contracts, CI workflows, and related artifacts. The catalogue entries are examples of the marketplace’s reusable agent extensions.

trailofbits/skills · 7,603 stars · on GitHub

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/trailofbits/skills

Made for: Claude Code.

Or install zeroize-audit, the plugin that ships this one along with the rest of its 1 skill, 11 agents, 1 MCP server.

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 3b-rust-compiler-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/agents/trailofbits/skills/3b-rust-compiler-analyzer/github.svg)](https://agentmods.dev/agents/trailofbits/skills/3b-rust-compiler-analyzer)
Your own site
<a href="https://agentmods.dev/agents/trailofbits/skills/3b-rust-compiler-analyzer"><img src="https://agentmods.dev/badge/agents/trailofbits/skills/3b-rust-compiler-analyzer/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 3b-rust-compiler-analyzer

Your own site · 80×15
<a href="https://agentmods.dev/agents/trailofbits/skills/3b-rust-compiler-analyzer"><img src="https://agentmods.dev/badge/agents/trailofbits/skills/3b-rust-compiler-analyzer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 70 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,578 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 unknown 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 $0.00070 $0.04578
Opus 5.5 $0.00028 $0.01831
Sonnet 5.5 $0.00014 $0.00916
Haiku 4.5 $0.00007 $0.00458

Measured 2d ago against content hash de7f69e73a88, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

3b-rust-compiler-analyzer 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 2d 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/zeroize-audit/agents/3b-rust-compiler-analyzer.md · 313 lines

The source is not reproduced here

Licensed CC-BY-SA-4.0

The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2d ago Changed de7f69e73a88
  2. 1mo ago First seen · 313 lines · 70 tokens per session scan A 24ad1e546ea6

Subscribe to this mod's changes

3b-rust-compiler-analyzer is an agent published in the GitHub repository trailofbits/skills (7,603 stars, last pushed yesterday), licensed CC-BY-SA-4.0. It adds 70 tokens to every session and 4,578 once invoked, about $0.0003 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 2026-09-10.

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