Systematic debugging techniques including error classification, root cause analysis (5 Whys), reproduction strategies, and error documentation. Use when debugging errors, investigating failures, analyzing stack traces, fixing bugs, or documenting errors in error-log.md. (project)
Install
npx skills add marcusgoll/Spec-Flow --skill debug-phasenpx skills add marcusgoll/Spec-Flow --skill debug-phase -a claude-code -gnpx skills add marcusgoll/Spec-Flow --skill debug-phase -a codex -ggemini skills install https://github.com/marcusgoll/Spec-Flow.git --path .codex/skills/debug-phasegh skill install marcusgoll/Spec-Flow debug-phasegit clone --depth 1 https://github.com/marcusgoll/Spec-Flow /tmp/marcusgoll__Spec-Flow
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/marcusgoll__Spec-Flow/.codex/skills/debug-phase ~/.claude/skills/debug-phase # Claude Code
cp -R /tmp/marcusgoll__Spec-Flow/.codex/skills/debug-phase ~/.agents/skills/debug-phase # Codex, Cursor, Gemini CLI, Copilot, OpenCode