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mutation-test

This skill runs mutation testing to measure test suite effectiveness by introducing small code changes and checking if tests catch them. It supports JavaScript (Stryker), Python (mutmut), and Java (PITest) with detailed reports showing mutation scores, survived mutants, and specific fixes needed.

Packaged view

This page reorganizes the original catalog entry around fit, installability, and workflow context first. The original raw source lives below.

Stars
98
Hot score
94
Updated
March 20, 2026
Overall rating
A8.3
Composite score
6.6
Best-practice grade
A92.4

Install command

npx @skill-hub/cli install jmagly-ai-writing-guide-mutation-test
mutation-testingtest-qualitycode-coveragetest-validationci-integration

Repository

jmagly/ai-writing-guide

Skill path: agentic/code/addons/testing-quality/skills/mutation-test

This skill runs mutation testing to measure test suite effectiveness by introducing small code changes and checking if tests catch them. It supports JavaScript (Stryker), Python (mutmut), and Java (PITest) with detailed reports showing mutation scores, survived mutants, and specific fixes needed.

Open repository

Best for

Primary workflow: Ship Full Stack.

Technical facets: Testing, Integration.

Target audience: Testing teams looking for install-ready agent workflows..

License: Unknown.

Original source

Catalog source: SkillHub Club.

Repository owner: jmagly.

This is still a mirrored public skill entry. Review the repository before installing into production workflows.

What it helps with

  • Install mutation-test into Claude Code, Codex CLI, Gemini CLI, or OpenCode workflows
  • Review https://github.com/jmagly/ai-writing-guide before adding mutation-test to shared team environments
  • Use mutation-test for testing workflows

Works across

Claude CodeCodex CLIGemini CLIOpenCode

Favorites: 0.

Sub-skills: 0.

Aggregator: No.

mutation-test | SkillHub