← All skills

mutation-testing

100 / 100 · Low risk

Fine to try.

By Integralist/agent-skills (GitHub) · coding · 25 stars · scanned at commit 2979675

Check whether a test suite catches behaviour changes by running mutation tests. Use when the user asks about mutation testing, surviving mutants, mutation scores, or whether tests would catch a regression.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'mutation-testing' ] || [ -L ~/.agents/skills/'mutation-testing' ]; then echo 'A skill folder named mutation-testing already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/Integralist/agent-skills' "$d" && git -C "$d" checkout --quiet '29796755244a6ede32c118686eb7a6a374055099' -- '.agents/skills/mutation-testing' && mkdir -p ~/.agents/skills && cp -R "$d"/'.agents/skills/mutation-testing' ~/.agents/skills/'mutation-testing' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'mutation-testing' ~/.claude/skills/'mutation-testing' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for Integralist/agent-skills shows the score of its lowest-scoring skill.

[![SkillTrust](https://zalavijaysinh.github.io/skilltrust/badges/Integralist/agent-skills.svg)](https://zalavijaysinh.github.io/skilltrust/repos/Integralist/agent-skills/)

Score history