Use when documenting an existing codebase whose documentation is missing, stale, or untrusted - an inherited system, a legacy application, a repo where the docs lie - or when regrounding a documentation tree against the code, or when someone asks what a system actually does.
Install
npx skills add riekelt/technical-writer --skill documenting-legacy-codebasesnpx skills add riekelt/technical-writer --skill documenting-legacy-codebases -a claude-code -gnpx skills add riekelt/technical-writer --skill documenting-legacy-codebases -a codex -ggemini skills install https://github.com/riekelt/technical-writer.git --path plugins/technical-writer/skills/documenting-legacy-codebasesgh skill install riekelt/technical-writer documenting-legacy-codebasesgit clone --depth 1 https://github.com/riekelt/technical-writer /tmp/riekelt__technical-writer
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/riekelt__technical-writer/plugins/technical-writer/skills/documenting-legacy-codebases ~/.claude/skills/documenting-legacy-codebases # Claude Code
cp -R /tmp/riekelt__technical-writer/plugins/technical-writer/skills/documenting-legacy-codebases ~/.agents/skills/documenting-legacy-codebases # Codex, Cursor, Gemini CLI, Copilot, OpenCode