running-mutation-tests

Quick Review

The skill addresses mutation testing but has significant gaps. The description mentions 'mutation testing' and 'test suite effectiveness,' but SKILL.md provides only generic testing workflows without mutation-specific details (mutant generation, mutation operators, kill rates). The structure is clear with logical steps, and referenced scripts (mutation_analyzer.py, mutation_runner.py, mutation_test_selector.py) suggest mutation-specific functionality exists. However, SKILL.md itself reads like a generic test runner without explaining mutation testing concepts critical for a CLI agent to understand what makes this different from normal testing. Novelty is moderate—mutation testing is specialized but increasingly supported by tools, so the incremental value over direct tool usage is limited. The skill would benefit from explicit mutation testing terminology (mutants, survivors, kill rates, mutation operators) in the main documentation.