How do I trigger this skill in Claude Code?

Once the skill is active, you can ask Claude to 'fuzz this function' or 'set up cargo-fuzz for this crate' to initiate the automated testing workflow.

What does the Cargo Fuzz skill do?

It provides Claude with the specialized knowledge required to set up and run fuzz testing for Rust projects using the cargo-fuzz infrastructure and libFuzzer.

Why should I use fuzzing in my Rust project?

Fuzzing is highly effective at finding unexpected crashes and logic errors that traditional unit tests might miss by providing a massive volume of randomized, coverage-guided inputs.

Who authored the cargo-fuzz skill?

This skill was developed by Trail of Bits, a leading security research firm, as part of their testing handbook suite.

Is cargo-fuzz compatible with all Rust projects?

It works with projects using the Rust compiler's nightly or stable channels that can link against libFuzzer, specifically targeting library functions.

Rust Cargo Fuzz

Name: Rust Cargo Fuzz
Author: plurigrid

byplurigrid

•

Security & Testing

Performs automated coverage-guided fuzz testing for Rust applications using the cargo-fuzz tool and libFuzzer engine.

About

The Cargo Fuzz skill integrates specialized security testing capabilities into Claude, allowing developers to identify crashes, panics, and edge-case vulnerabilities within Rust codebases. Developed by the security experts at Trail of Bits, this skill provides domain-specific guidance for implementing libFuzzer-based testing, helping to ensure that high-performance Rust applications remain memory-safe and resilient against malformed inputs.

Key Features

Identifies memory safety issues, unhandled panics, and logic errors
Streamlines the execution of fuzzing campaigns within the Rust ecosystem
Automates the setup and initialization of cargo-fuzz targets
Generates coverage-guided inputs to maximize code path exploration
Integrates Trail of Bits' security-focused testing best practices
2 GitHub stars

Use Cases

Conducting automated security audits for Rust-based infrastructure and smart contracts
Hardening complex data parsers and protocols against malicious input
Identifying regression bugs and edge cases in critical Rust libraries

About

Key Features

Identifies memory safety issues, unhandled panics, and logic errors
Streamlines the execution of fuzzing campaigns within the Rust ecosystem
Automates the setup and initialization of cargo-fuzz targets
Generates coverage-guided inputs to maximize code path exploration
Integrates Trail of Bits' security-focused testing best practices
2 GitHub stars

Use Cases

Conducting automated security audits for Rust-based infrastructure and smart contracts
Hardening complex data parsers and protocols against malicious input
Identifying regression bugs and edge cases in critical Rust libraries