Use when writing a product spec, feature spec, API contract, agent task spec, or any other specification where a zero-question document is required. Encodes outcome-first methodology, acceptance criteria taxonomy, scope boundary protocol, executor context model, and ambiguity resolution framework.
Install
npx skills add Avyayalaya/pm-skills-arsenal --skill specification-writingnpx skills add Avyayalaya/pm-skills-arsenal --skill specification-writing -a claude-code -gnpx skills add Avyayalaya/pm-skills-arsenal --skill specification-writing -a codex -ggemini skills install https://github.com/Avyayalaya/pm-skills-arsenal.git --path skills/specification-writinggh skill install Avyayalaya/pm-skills-arsenal specification-writinggit clone --depth 1 https://github.com/Avyayalaya/pm-skills-arsenal /tmp/Avyayalaya__pm-skills-arsenal
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/Avyayalaya__pm-skills-arsenal/skills/specification-writing ~/.claude/skills/specification-writing # Claude Code
cp -R /tmp/Avyayalaya__pm-skills-arsenal/skills/specification-writing ~/.agents/skills/specification-writing # Codex, Cursor, Gemini CLI, Copilot, OpenCode