tool-foundation-sprint-magic-lenses
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.
npx skills add product-on-purpose/pm-skills --skill tool-foundation-sprint-magic-lenses --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
<!-- PM-Skills | https://github.com/product-on-purpose/pm-skills | Apache 2.0 --> # Foundation Sprint Magic Lenses Day 2 afternoon of a Foundation Sprint. The team evaluates each candidate approach from multiple perspectives, surfaces contradictions, and produces a top bet plus a backup plan. The Decider names both; without an explicit backup, invalidation of the top bet sends the team back to ambiguous debate. Family contract: [`docs/reference/skill-families/foundation-sprint-skills-contract.md`](../../docs/reference/skill-families/foundation-sprint-skills-contract.md). This skill is a member of `foundation-sprint-skills`. ## When to Use - Day 2 afternoon of a Foundation Sprint. - Approach Options is signed; the team has 3-7 candidate approaches advancing. - The team has at least 1 team-specific custom lens prepared (per ratified spec decision; classic lenses alone are insufficient). ## When NOT to Use - Approach Options is unresolved or under-numbered (fewer than 3). Force a third option through the approach-options skill first. - The team has pre-committed to a top bet. Magic Lenses is a sense-making exercise; if the decision is already made, the time is better spent on Founding
- When to Use
- When NOT to Use
- What This Skill Produces
- The Five Canonical Lenses
- Sequence (105 minutes)
- Step 1: Frame the lenses (5 min)
- Step 2: Score each approach per lens (40-60 min)
- Step 3: Pattern review (15-25 min)
- Step 4: Decider supervote on top bet (10-15 min)
- Step 5: Decider names backup plan (5-10 min)
- Step 6: Decision rationale (5-10 min)
- Common Pitfalls
- Decider Role
- Canonical Sources
What does the tool-foundation-sprint-magic-lenses skill do?
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.
How do I install it?
Run `npx skills add product-on-purpose/pm-skills --skill tool-foundation-sprint-magic-lenses --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From product-on-purpose/pm-skills, a repository with 518 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.