Test & debugCC-BY-SA-4.0

Mutation testing

by Trail of Bits (opens in a new tab) trailofbits/skills

Configures mewt or muton campaigns and interprets surviving mutations as test gaps or equivalents.

Installation

Skills CLI

Skills CLI command
npx skills@latest add trailofbits/skills --skill mutation-testing

Requires Node.js and npm. Choose your agents in the installer; add -g for a global installation.

Fieldbook review

Reviewed 27 Sept 2026

Routes setup, optimization, bug hunting, and formal analysis to dedicated references, using the installed CLI's help as the authority. Examples target the mewt 4.x interface, muton is interchangeable by name, and severity ranks mutations rather than business risk.

  • LicenceCC-BY-SA-4.0
  • FrontmatterValid name and description
  • Risky patternsNone found
  • Size110 lines
  • Last checked27 Sept 2026 · 20e6ee2b6cec91bad7572dea966b5fce1e50f9ef8d4bf2e4ba69ac9b679792ff

What it can touch

  • Edits code

    Changes files in your project.

  • Runs commands

    Runs shell commands such as tests, builds or installs.

Read the source

Fieldbook links to the original instead of copying it, so you always read the version you install.

plugins/mutation-testing/skills/mutation-testing/SKILL.md on GitHub (opens in a new tab)