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product-design-shared

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UpdatedMay 11, 2026 at 14:52

Shared canonical references for product-design frameworks — Pyramid Principle, Working Backwards, Double Diamond, research design, methodology selection. Consumed by `product-discovery`, `product-strategy`, `working-backwards`, and `customer-research` via `${CLAUDE_PLUGIN_ROOT}/skills/product-design-shared/references/`. Do NOT invoke this skill directly — it has no orchestrator and no templates. Load the upstream skill that owns your task (`product-discovery` for PRD / HMW / EARS, `product-strategy` for Rumelt / Wardley / Minto, etc.) and let it pull from this pool as needed.

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theagenticguy/erpaval

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SKILL.md

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product-design-shared

description

product-design-shared — references-only pool

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.

What lives here

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

Who consumes this skill

product-discovery — for PRD drafting, HMW framing, EARS specs, Jobs-to-be-Done
product-strategy — for Rumelt kernel, Wardley maps, Minto-structured argument
working-backwards — for the 5-stage flow (Listen, Define, Invent, Refine, Test)
customer-research — for hypothesis-driven research design

If you're trying to "use" product-design-shared, you probably want one of those four skills instead. Pick from references/methodology-selection.md.

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erpaval

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Workflow for autonomous software development with the Kiro CLI (open Agent Skills standard). Classifiers route scope, complexity, directory state, and spec readiness before committing to Explore / Research / Plan / Act / Validate, then close the loop with a Compound step that persists lessons to `.erpaval/solutions/` for future sessions. Optional HMW reframing and EARS specification add structured rigor — the orchestrator agent judges when to run them. Each Act subagent edits its own Markdown task packet section-by-section per the write protocol, and the orchestrator monitors with `wc -l`. Use when the user asks to implement a feature autonomously, build with agents, use ERPAVal, plan and execute a coding task, delegate to subagents, do agent-driven development, extract lessons, recall prior lessons, or mentions autonomous coding workflow or compound engineering.

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product-discovery

theagenticguy/erpaval

File-first orchestrator for product discovery and spec frameworks. Frames the problem with a Discovery Lead, Product Analyst, or System Architect role. Spawns parallel framework agents (Double Diamond, How Might We, Jobs to Be Done, user stories with INVEST, EARS for AI-coder specs, Gherkin), synthesizes into a PRD or discovery memo, and runs a critic pass. Absorbs prd-drafter (idea to PRD via three parallel research roles) and design-thinking (problem framing, scoped research, brainstorm). Ships per-framework references, role prompts, and templates for PRDs, HMW outputs, job stories, and EARS specs. Use when the user asks to write a PRD, draft requirements, run discovery, brainstorm a product, turn insights into HMW questions, write job stories, spec a feature in EARS for Kiro or Spec Kit, define user stories with INVEST, run a Double Diamond round, or mentions JTBD, acceptance criteria, or Kiro spec format. Do NOT use for business strategy work like Rumelt, Wardley, or PR-FAQ-as-leadership-artifact. Use pro

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erpaval

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Workflow for autonomous software development with Claude Code. Classifiers route scope, complexity, directory state, and spec readiness before committing to Explore / Research / Plan / Act / Validate, then close the loop with a Compound step that persists lessons to `.erpaval/solutions/` for future sessions. Optional HMW reframing and EARS specification add structured rigor — Claude judges when to run them. Each Act subagent edits its own Markdown task packet section-by-section per the write protocol, and the orchestrator monitors with `wc -l`. Use when the user asks to implement a feature autonomously, build with agents, use ERPAVal, plan and execute a coding task, delegate to subagents, do agent-driven development, extract lessons, recall prior lessons, or mentions autonomous coding workflow or compound engineering.

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product-discovery

theagenticguy/erpaval

File-first orchestrator for product discovery and spec frameworks. Frames the problem with a Discovery Lead / Product Analyst / System Architect role, spawns parallel framework agents (Double Diamond, How Might We, Jobs to Be Done, user stories + INVEST, EARS for AI-coder specs, Gherkin), synthesizes into a PRD or discovery memo, runs a critic pass. Absorbs prd-drafter (idea to PRD via 3 parallel research roles) and design-thinking (pain-point excavation, landscape research, brainstorm). Ships per-framework references, role prompts, templates for PRDs, HMW outputs, job stories, EARS specs. Use when the user asks to write a PRD, draft requirements, run discovery, brainstorm a product, turn insights into HMW questions, write job stories, spec a feature in EARS for Kiro or Spec Kit, define user stories with INVEST, run a Double Diamond round, or mentions JTBD, acceptance criteria, Kiro spec format. Do NOT use for business strategy (Rumelt, Wardley, PR-FAQ as leadership artifact) — use product-strategy.

2026-05-2925

product-design-shared

theagenticguy/erpaval

Shared canonical references for product-design frameworks — Pyramid Principle, Working Backwards, Double Diamond, research design, methodology selection. Consumed by `product-discovery`, `product-strategy`, `working-backwards`, and `customer-research` via `${ERPAVAL_HOME}/skills/product-design-shared/references/`. Do NOT invoke this skill directly — it has no orchestrator and no assets. Load the upstream skill that owns your task (`product-discovery` for PRD / HMW / EARS, `product-strategy` for Rumelt / Wardley / Minto, etc.) and let it pull from this pool as needed.

2026-05-1625

customer-research

theagenticguy/erpaval

Customer research and problem framing using the research-design discipline: hypothesis, null hypothesis, MECE questions, methods, findings. Produces Pyramid-base-shaped output ready for downstream composition into PR/FAQs, long-form narratives, or PRDs. Use when the user asks to design user research, run customer interviews, synthesize research findings, frame a problem statement, build a customer journey map, plan a VoC study, or mentions pain-point analysis, research plan, hypothesis testing, customer insights, jobs-to-be-done, or voice of customer.

2026-05-1125

name

product-design-shared

description

product-design-shared — references-only pool

What lives here

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

Who consumes this skill

product-discovery — for PRD drafting, HMW framing, EARS specs, Jobs-to-be-Done
product-strategy — for Rumelt kernel, Wardley maps, Minto-structured argument
working-backwards — for the 5-stage flow (Listen, Define, Invent, Refine, Test)
customer-research — for hypothesis-driven research design

If you're trying to "use" product-design-shared, you probably want one of those four skills instead. Pick from references/methodology-selection.md.