Skills for Product Managers.

more_product_skills.md

1. grill-me (mattpocock/skills/grill-me or internal grilling)

   • What it does: Conducts a relentless, adversarial Socratic interview to stress-test a brainstormed design before implementation.
   • Why it complements: Brainstorming skills generate options; grill-me aggressively tests assumptions, edge cases, and failure modes to ensure the selected design is rock-solid.

2. to-prd & prd-to-plan

   • What it does: Takes raw product discovery/brainstorm outputs and structures them into formal Product Requirement Documents (PRDs), then breaks down PRDs into granular execution tasks (prd-to-issues).
   • Why it complements: Bridges the gap between divergent ideation (product-brainstorming) and concrete execution tracking.

3. codebase-design & domain-modeling

   • What it does: Maps out domain terminology, ubiquitous language, and high-level software architecture.
   • Why it complements: Deepens technical brainstorming by anchoring features to clean domain abstractions before any code plan is drafted.

4. improve-codebase-architecture

   • What it does: Audits existing codebases for refactoring opportunities and architectural improvements.
   • Why it complements: Offers a structured framework for brainstorming refactorings on existing products (complementing phuryn/brainstorm-ideas-existing).

skills_for_product.md

📊 Quick Overview & Taxonomy

Skill	Primary Domain	Target Persona	Key Focus & Philosophy
obra/superpowers/brainstorming	Software Architecture	AI Coding Agents / Developers	Hard-gated design before code. Enforces structured spec creation (docs/...) and transitions strictly to implementation planning (writing-plans). Includes a Just-In-Time visual companion.
anthropics/.../product-brainstorming	Product Strategy	Product Managers / Designers	AI as a sharp sparring partner. Mode-based (Problem Exploration, Ideation, Assumption Testing, Strategy) utilizing frameworks like JTBD, OST, SCAMPER, and OODA loop.
sickn33/.../brainstorming	Systems Engineering	Tech Leads / Governance	Disciplined process governance & risk reduction. Features a mandatory "Understanding Lock", Non-Functional Requirement (NFR) checks, running Decision Logs, and rigid Exit Criteria.
phuryn/.../brainstorm-ideas-new	Initial Product Discovery	Startup Founders / PMs	Initial discovery for NEW products. Multi-perspective feature generation simulating a Product Trio (PM + Designer + Engineer) focused on market validation and core value delivery.
phuryn/.../brainstorm-ideas-existing	Continuous Product Discovery	Product Trios	Continuous discovery for EXISTING products. Multi-perspective ideation (PM + Designer + Engineer) utilizing Opportunity Solution Trees (OST) to improve live products.

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🔍 Detailed Breakdown & Key Takeaways

1. obra/superpowers/brainstorming

• Core Philosophy: "No code without an approved design." Solves the common agent failure mode of jumping straight to code modifications or skipping specs for seemingly simple features.
• Standout Feature: Enforces strict phase transitions (Brainstorm -> Design Doc -> Plan) and introduces visual mockups dynamically only when helpful.
• Best For: Day-to-day coding agent workflows (Cursor, Claude Code, Antigravity) to maintain clean code architecture and avoid premature edits.

2. anthropics/knowledge-work-plugins/product-brainstorming

• Core Philosophy: "AI as a sharp sparring partner, not a deliverable generator." Focuses on divergent thinking, challenging PM assumptions, and pushing strategic concepts further.
• Standout Feature: Deep integration of strategic frameworks (Jobs-to-be-Done, SCAMPER, OODA loop) paired with strict behavioral guidelines that keep the agent opinionated and inquisitive.
• Best For: High-level product discovery and strategic planning before drafting PRDs or formal specifications.

3. sickn33/antigravity-awesome-skills/brainstorming

• Core Philosophy: "Slow down the process just enough to get it right." Built for high-stakes technical systems where architectural ambiguity causes downstream bugs or debt.
• Standout Feature: Requires an explicit "Understanding Lock" (summary of non-goals, assumptions, and constraints) and mandatory Non-Functional Requirement (NFR) probing (scaling, latency, security) before proceeding.
• Best For: Enterprise backend architecture, infrastructure changes, and security-critical systems.

4 & 5. Pawel Huryn's phuryn/pm-skills (brainstorm-ideas-new & brainstorm-ideas-existing)

• Core Philosophy: Grounded in Teresa Torres' Continuous Discovery Habits, these skills simulate a full Product Trio (Product Manager, UX Designer, Software Engineer).
• Standout Feature: Generates 5 distinct concepts per role (15 total ideas per session), explicitly distinguishing between building zero-to-one products vs. optimizing established product metrics.
• Best For: Rapid feature candidate generation and populating Opportunity Solution Trees during sprint planning or product review sessions.

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💡 Recommendation Summary

• For Software Development: Use obra/superpowers/brainstorming as your standard coding agent gate. Switch to sickn33/antigravity-awesome-skills/brainstorming when designing mission-critical systems or enterprise architecture.
• For Product & Strategy: Use anthropics/product-brainstorming for deep conversational sparring on strategy and problems, and phuryn/pm-skills when you need quick, multi-perspective feature lists.