Day 2 afternoon move of a Foundation Sprint. Evaluates the candidate approach set through multiple lenses (4 classic plus at least 1 custom) to surface trade-offs, identify consistent winners and contradictions, and produce a top bet plus a backup plan. Use after Approach Options is signed. Lens scoring is a sense-making tool, not mathematical truth; arbitrary precision is a smell.
Install
npx skills add product-on-purpose/pm-skills --skill tool-foundation-sprint-magic-lensesnpx skills add product-on-purpose/pm-skills --skill tool-foundation-sprint-magic-lenses -a claude-code -gnpx skills add product-on-purpose/pm-skills --skill tool-foundation-sprint-magic-lenses -a codex -ggemini skills install https://github.com/product-on-purpose/pm-skills.git --path skills/tool-foundation-sprint-magic-lensesgh skill install product-on-purpose/pm-skills tool-foundation-sprint-magic-lensesgit clone --depth 1 https://github.com/product-on-purpose/pm-skills /tmp/product-on-purpose__pm-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/product-on-purpose__pm-skills/skills/tool-foundation-sprint-magic-lenses ~/.claude/skills/tool-foundation-sprint-magic-lenses # Claude Code
cp -R /tmp/product-on-purpose__pm-skills/skills/tool-foundation-sprint-magic-lenses ~/.agents/skills/tool-foundation-sprint-magic-lenses # Codex, Cursor, Gemini CLI, Copilot, OpenCode