Mutation Testing Runner

1. Skill Name

mutation-testing-runner

2. Description

Mutation Testing Runner: Designs and automates reliable tests with measurable confidence.

3. When the AI agent should use this skill

Use this skill when a request aligns with Mutation Testing Runner in the testing domain.

4. Required Inputs

• Repository path and target scope
• Objective and acceptance criteria
• Stack details (Node.js, TypeScript, Python, infra, or data)
• Constraints (time, risk, compliance, cost)

5. Expected Outputs

• Implementation plan
• Generated or updated artifacts
• Validation steps and results
• Risks and follow-up actions

6. Step-by-Step Workflow

1. Clarify scope, assumptions, and success criteria.
2. Inspect repository context and existing patterns.
3. Propose minimal safe change set.
4. Implement artifacts and configuration updates.
5. Run checks/tests and capture evidence.
6. Summarize outcomes, limitations, and next steps.

7. Commands or tools used

• pytest, vitest/jest, playwright, coverage tools
• rg --files
• rg "pattern"
• git status
• git diff

8. Example prompts

• /skill mutation-testing-runner Audit current implementation and propose prioritized improvements.
• /skill mutation-testing-runner Implement a production-ready baseline with validation steps.
• /skill mutation-testing-runner Generate artifacts and summarize tradeoffs.

9. Guardrails

• Do not run destructive actions without explicit approval.
• Preserve existing conventions unless migration is requested.
• Prefer deterministic and reproducible commands.
• Clearly state assumptions and uncertainty.

10. Limitations

• Output quality depends on project context and available tests.
• External systems may require environment-specific verification.
• Human review may still be needed for policy/compliance decisions.