Identify risky assumptions for a feature idea in an existing product across Value, Usability, Viability, and Feasibility. Uses multi-perspective devil's advocate thinking. Use when stress-testing a feature idea, doing risk assessment, or preparing for assumption mapping.
Install
npx skills add phuryn/pm-skills --skill identify-assumptions-existingnpx skills add phuryn/pm-skills --skill identify-assumptions-existing -a claude-code -gnpx skills add phuryn/pm-skills --skill identify-assumptions-existing -a codex -ggemini skills install https://github.com/phuryn/pm-skills.git --path pm-product-discovery/skills/identify-assumptions-existinggh skill install phuryn/pm-skills identify-assumptions-existinggit clone --depth 1 https://github.com/phuryn/pm-skills /tmp/phuryn__pm-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/phuryn__pm-skills/pm-product-discovery/skills/identify-assumptions-existing ~/.claude/skills/identify-assumptions-existing # Claude Code
cp -R /tmp/phuryn__pm-skills/pm-product-discovery/skills/identify-assumptions-existing ~/.agents/skills/identify-assumptions-existing # Codex, Cursor, Gemini CLI, Copilot, OpenCode