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mutation-test-generator

Deliberately injects bugs (mutations) into code to evaluate test suite strength and generates highly robust unit tests that catch these mutations.

Skill by smartrus

IndexedMIT
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/smartrus-mutation-test-generator

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Deliberately injects bugs (mutations) into code to evaluate test suite strength and generates highly robust unit tests that catch these mutations. Focuses on mutation testing methodology to reveal gaps in test coverage. Identifies mutation operators such as boundary changes, operator swaps, and return value flips to ensure comprehensive test quality. Do NOT trigger: general unit test writing without mutation context, code coverage reporting only, integration or E2E testing, performance or load testing, debugging failing tests

Use cases: testing, writing

Reviews

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Python package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/mutation-test-generator

What's inside

Skill name
mutation-test-generator
Description
Deliberately injects bugs (mutations) into code to evaluate test suite strength and generates highly robust unit tests that catch these mutations. Focuses on mutation testing methodology to reveal gaps in test coverage. Identifies mutation operators such as boundary changes, operator swaps, and return value flips to ensure comprehensive test quality. Do NOT trigger: general unit test writing without mutation context, code coverage reporting only, integration or E2E testing, performance or load testing, debugging failing tests
License
MIT
Instructions
1 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Files (3)

  • SKILL.md
  • evals.json · evals/
  • mutation_injector.py · scripts/

Read SKILL.md on GitHub

More from smartrus/claude-skills-and-apps

Signals

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Last commit (this folder)
Mar 23, 2026 (7 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/smartrus/claude-skills-and-apps
Website
smartrus.github.io/claude-skills-and-apps/
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from smartrus

Cite this page

mutation-test-generator skill. Agent Mart. https://agentmart.dev/skills/smartrus-mutation-test-generator (last updated 2026-10-24)