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Cargo Fuzz

Checked
trailofbits·vlatest·backend·CC-BY-SA-4.0

Cargo Fuzz automatically generates diverse, realistic test data for your cargo systems, ensuring robust and reliable functionality.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add trailofbits/skills --skill cargo-fuzz -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

trailofbits

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned trailofbits/skills at 82fe822625.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
82fe822625
Manifest
plugins/testing-handbook-skills/skills/cargo-fuzz/SKILL.md
Scanned
2 files, 400 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

The cargo-fuzz skill is a tool designed to integrate fuzz testing into Rust projects using Cargo. It enables developers to automatically detect and test for potential security vulnerabilities or crashes in their code by generating random inputs and monitoring the application's behavior.

When to use it

  • You are developing a Rust-based application and want to identify edge cases or security flaws early in the development cycle.
  • Your project involves handling untrusted input, such as network data or user-provided files, and you need to ensure robustness against malformed inputs.
  • You're preparing for a code audit or penetration test and require automated testing tools to supplement manual checks.

Key capabilities

  • Integration with Cargo for seamless use in Rust projects
  • Automatic generation of random input data for testing
  • Detection of crashes or undefined behaviors during fuzzing sessions

Example prompts

  • "Run fuzz tests on the parse_input function in my Rust project."
  • "Generate a report of all crashes found during the last fuzzing session."
  • "Configure cargo-fuzz to target specific modules in my application."

Tips & gotchas

  • Ensure your Rust environment is properly set up with Cargo and necessary dependencies before using this tool.
  • Fuzz testing can be resource-intensive; consider running it on a dedicated machine or during off-peak hours.