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feat(pm-product-strategy): add seven-powers skill

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Adds Hamilton Helmer's 7 Powers framework skill for assessing durable
competitive advantage (scale economies, network effects, counter-
positioning, switching costs, branding, cornered resource, process
power). Updates skill counts and descriptions across marketplace.json,
plugin.json, and READMEs.

Merged from louzhedong:codex/add-seven-powers-skill (PR vs phuryn/pm-skills).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KcEyZ9gTqwkoiDBfW4fVzu
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Justin Paul
2026-06-22 21:40:14 -04:00
parent a0cd730d4c
commit a330c887f6
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pm-product-strategy/README.md
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# pm-product-strategy
Product strategy skills for PMs: vision, strategy canvas, startup canvas, value propositions, lean canvas, business model canvas, SWOT, PESTLE, Ansoff Matrix, Porter's Five Forces, pricing, and monetization.
Product strategy skills for PMs: vision, strategy canvas, startup canvas, value propositions, lean canvas, business model canvas, SWOT, PESTLE, Ansoff Matrix, Porter's Five Forces, Seven Powers, pricing, and monetization.
## Skills (12)
## Skills (13)
- **ansoff-matrix** — Generate an Ansoff Matrix analysis mapping growth strategies across market penetration, market development, product development, and diversification.
- **business-model** — Generate a Business Model Canvas with all 9 building blocks.
@@ -13,6 +13,7 @@ Product strategy skills for PMs: vision, strategy canvas, startup canvas, value
- **pricing-strategy** — Analyze and design pricing strategies including pricing models, competitive pricing analysis, willingness-to-pay estimation, and price elasticity considerations.
- **product-strategy** — Generate a comprehensive product strategy using the 9-section Product Strategy Canvas covering vision, segments, costs, value propositions, trade-offs, metrics, growth, capabilities, and defensibility.
- **product-vision** — Brainstorm an inspiring, achievable, and emotional product vision that motivates teams.
- **seven-powers** — Assess durable competitive advantage using Hamilton Helmer's 7 Powers framework: scale economies, network effects, counter-positioning, switching costs, branding, cornered resource, and process power.
- **startup-canvas** — Generate a Startup Canvas combining Product Strategy (9 sections) and Business Model (Cost Structure + Revenue Streams) for a new product. An alternative to Business Model Canvas and Lean Canvas that separates strategy from business model.
- **swot-analysis** — Perform a detailed SWOT analysis identifying strengths, weaknesses, opportunities, and threats with actionable recommendations.
- **value-proposition** — Generate a detailed value proposition using a 6-part JTBD template (Who, Why, What before, How, What after, Alternatives).