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From erpaval
Shared reference pool for product-design frameworks (Pyramid Principle, Working Backwards, Double Diamond, research design, methodology selection). Not invoked directly — consumed by upstream skills.
npx claudepluginhub theagenticguy/erpaval --plugin erpavalHow this skill is triggered — by the user, by Claude, or both
Slash command
/erpaval:product-design-sharedThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
This skill exists so the four product-design skills above can share one
Guides Design Thinking's 5 phases (Empathize, Define, Ideate, Prototype, Test) for human-centered innovation with workshop facilitation, empathy methods, and exercise templates.
Orchestrates product discovery and spec writing using multiple frameworks (Double Diamond, HMW, JTBD, user stories, EARS, Gherkin). Creates PRDs, discovery memos, and spec documents with a critic pass.
Guides human-centered design processes using empathy-driven methodologies. Useful when users say 'lets run design thinking' or 'I want to apply design thinking'.
Share bugs, ideas, or general feedback.
This skill exists so the four product-design skills above can share one canonical copy of each framework reference. It has no SKILL behavior: no role prompts, no orchestrator, no templates, no slash command.
| File | What it covers |
|---|---|
references/pyramid-principle.md | Minto Pyramid composition discipline |
references/working-backwards.md | Amazon Working Backwards 5-stage flow + PR/FAQ |
references/double-diamond.md | Discover / Define / Develop / Deliver, divergent-convergent shape |
references/research-design.md | Hypothesis · null · MECE questions · methods · findings |
references/methodology-selection.md | Decision tree for which framework to reach for |
product-discovery — for PRD drafting, HMW framing, EARS specs, Jobs-to-be-Doneproduct-strategy — for Rumelt kernel, Wardley maps, Minto-structured argumentworking-backwards — for the 5-stage flow (Listen, Define, Invent, Refine, Test)customer-research — for hypothesis-driven research designIf you're trying to "use" product-design-shared, you probably want one of
those four skills instead. Pick from references/methodology-selection.md.