joaoariedi

Hef.Mutate — Testing skill for Claude Code

Testing community

Mutation-test the changed code and enforce the raise-only mutation-score ratchet.

How to install Hef.Mutate

Installs to ~/.claude/skills/joaoariedi-hefesto-hef.mutate/SKILL.md

Terminal

mkdir -p ~/.claude/skills/joaoariedi-hefesto-hef.mutate && curl -fsSL https://raw.githubusercontent.com/joaoariedi/hefesto/HEAD/commands/hef.mutate.md -o ~/.claude/skills/joaoariedi-hefesto-hef.mutate/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What Hef.Mutate does

model: opus description: "Mutation-test the changed code and enforce the raise-only mutation-score ratchet" argument-hint: "[paths or modules — default: what changed vs the base branch]"

Mutate

Coverage says a line ran. A mutation score says a test would have *noticed* if the line were wrong. This command runs the project's mutation tool over the changed code, enforces a ratchet that can only go up, and turns every surviving mutant into the test that should have killed it.

Pre-Fl

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