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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.
How 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
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.
npx claudepluginhub theagenticguy/erpaval --plugin erpavalOrchestrates 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'.
Guides each phase of the design lifecycle — from research and strategy through UI design, interaction design, prototyping, and handoff. Includes 63 specialized skills across 8 categories.