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Run mutation tests v1.0.0

Use this resource to run mutation tests to measure how well your tests really perform

New

  • 331 downloads
  • 244 likes
  • 250 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install mutation-testing-setup

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent walks you through running mutation tests, which make small changes to the code to see whether your tests catch them. You get the list of surviving mutants and ways to strengthen the tests.

Mostly picked by

Updated November 2, 2026

Card for the “Run mutation tests” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: run steps and examples
  • SKILL.md: prerequisites, expected outputs and common errors

Good fit for

  • Your tests pass but you doubt they are effective
  • You want to measure the quality of your unit tests

Not for

    Tags

    • mutation testing
    • quality
    • unit tests
    • coverage
    • reliability

    About

    You say

    “Run mutation tests on the billing module and list the surviving mutants.”

    Card for the “Run mutation tests” skill

    Skill published by Jeremy Longshore <jeremy@intentsolutions.io> under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to run mutation tests to measure how well your tests really perform
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md2.3 KB

    Origin and licence

    Listed unmodified

    Author
    Jeremy Longshore <jeremy@intentsolutions.io>
    Source
    github.com/jeremylongshore/tons-of-skills-marketplace/tree/ab85a061f7bcc039dac13ee193de7a4cd4388571/skills/09-test-automation/mutation-test-runner
    Licence
    MIT

    Notice

    « mutation-test-runner » (Jeremy Longshore <jeremy@intentsolutions.io>, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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