Brainstorm, scope and spec a product idea or feature before design or code. Use for ideation, problem framing, comparing approaches, prioritising, PRDs and specs, and "what should we build". Ends in a decision plus SPEC.md and features.json in which every requirement says how it will be verified.
Install
npx skills add IfeOlulesi/proof --skill discovernpx skills add IfeOlulesi/proof --skill discover -a claude-code -gnpx skills add IfeOlulesi/proof --skill discover -a codex -ggemini skills install https://github.com/IfeOlulesi/proof.git --path plugins/proof/skills/discovergh skill install IfeOlulesi/proof discovergit clone --depth 1 https://github.com/IfeOlulesi/proof /tmp/IfeOlulesi__proof
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/IfeOlulesi__proof/plugins/proof/skills/discover ~/.claude/skills/discover # Claude Code
cp -R /tmp/IfeOlulesi__proof/plugins/proof/skills/discover ~/.agents/skills/discover # Codex, Cursor, Gemini CLI, Copilot, OpenCode