Graph-informed mutation testing triage. Parses codebases with Trailmark, runs mutation testing and necessist, then uses survived mutants, unnecessary test statements, and call graph data to identify false positives, missing test coverage, and fuzzing targets.
Install
npx skills add trailofbits/skills --skill genotoxicnpx skills add trailofbits/skills --skill genotoxic -a claude-code -gnpx skills add trailofbits/skills --skill genotoxic -a codex -ggemini skills install https://github.com/trailofbits/skills.git --path plugins/trailmark/skills/genotoxicgh skill install trailofbits/skills genotoxicgit clone --depth 1 https://github.com/trailofbits/skills /tmp/trailofbits__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/trailofbits__skills/plugins/trailmark/skills/genotoxic ~/.claude/skills/genotoxic # Claude Code
cp -R /tmp/trailofbits__skills/plugins/trailmark/skills/genotoxic ~/.agents/skills/genotoxic # Codex, Cursor, Gemini CLI, Copilot, OpenCode