Product Design Skill

Product thinking, requirements definition, and feature specification.

When to Use This Skill

• Writing product requirements (PRD)
• Defining user stories
• Feature prioritization
• Product roadmap planning
• MVP scoping

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📋 Product Requirements Document (PRD)

PRD Template

# Feature Name

## Overview
Brief description of the feature and its purpose.

## Goals
- Primary goal
- Success metrics (KPIs)

## User Stories
As a [user type], I want to [action] so that [benefit].

## Requirements

### Functional Requirements
1. FR-001: User can create...
2. FR-002: System should...

### Non-Functional Requirements
- Performance: Response < 200ms
- Availability: 99.9% uptime
- Security: Role-based access

## User Flow
1. User clicks "Create"
2. Form appears
3. User fills fields
4. Submit → Success message

## UI/UX Considerations
- Design mockups link
- Edge cases
- Error states

## Technical Considerations
- API changes needed
- Database schema updates
- Third-party integrations

## Out of Scope
- Feature X (future phase)
- Feature Y (not planned)

## Timeline
- Design: Week 1
- Development: Week 2-3
- Testing: Week 4
- Release: Week 5

## Open Questions
- [ ] Question 1?
- [ ] Question 2?

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📝 User Stories

Format

As a [user persona]
I want to [action/goal]
So that [benefit/value]

Examples

# Good User Stories

As a developer
I want to generate API keys from the dashboard
So that I can authenticate my applications quickly

As an admin
I want to view usage analytics per user
So that I can identify heavy users and plan capacity

As a new user
I want guided onboarding
So that I can understand how to use the platform quickly

Acceptance Criteria

**Story**: User can reset password

**Acceptance Criteria**:
- [ ] User receives reset email within 1 minute
- [ ] Reset link expires after 24 hours
- [ ] Password must meet complexity requirements
- [ ] User is logged in after successful reset
- [ ] Old sessions are invalidated

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🎯 Feature Prioritization

RICE Framework

RICE Score = (Reach × Impact × Confidence) / Effort

Reach:      Users affected per quarter
Impact:     0.25 (minimal) to 3 (massive)
Confidence: 100% (high) to 50% (low)
Effort:     Person-months

MoSCoW Method

Priority	Description
Must Have	Critical for launch
Should Have	Important but not critical
Could Have	Nice to have if time
Won't Have	Out of scope for now

Priority Matrix

        High Impact
             │
    Quick    │    Big
    Wins     │    Bets
             │
Low ─────────┼───────── High
Effort       │         Effort
             │
    Fill     │    Money
    Ins      │    Pit
             │
        Low Impact

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🗺️ Product Roadmap

Quarterly Roadmap

## Q1 2024 - Foundation

### Month 1
- [ ] User authentication system
- [ ] Basic API key management

### Month 2
- [ ] Usage tracking
- [ ] Dashboard v1

### Month 3
- [ ] Rate limiting
- [ ] Basic analytics

## Q2 2024 - Growth

### Month 4-6
- [ ] Team management
- [ ] Advanced analytics
- [ ] Billing integration

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🚀 MVP Definition

MVP Checklist

## Core Value Proposition
What is the ONE thing this product must do?

## Minimum Features
1. Feature A (essential)
2. Feature B (essential)
3. Feature C (nice to have) ← Cut this

## Success Criteria
- 100 beta users
- 50% retention after 1 week
- NPS > 30

## Timeline
- 4-6 weeks maximum
- Ship early, iterate fast

Feature Scope Matrix

Feature	MVP	V1.0	V2.0
User auth	✅	✅	✅
API keys	✅	✅	✅
Basic dashboard	✅	✅	✅
Usage analytics	❌	✅	✅
Team features	❌	❌	✅
SSO	❌	❌	✅

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👥 Personas

Persona Template

## Developer Dan

**Role**: Full-stack developer at startup

**Goals**:
- Ship features quickly
- Minimize infrastructure work
- Stay within budget

**Pain Points**:
- Complex API integrations
- Managing multiple AI providers
- Unpredictable costs

**Behaviors**:
- Prefers documentation over videos
- Values developer experience
- Price-sensitive

**Quote**: "I just want it to work without reading 50 pages of docs."

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📊 Success Metrics

AARRR Framework (Pirate Metrics)

Stage	Metric	Example
Acquisition	How users find you	Sign-ups, traffic
Activation	First value moment	First API call
Retention	Users coming back	DAU/MAU, churn
Revenue	Monetization	MRR, ARPU
Referral	Users sharing	NPS, referral rate

Key Metrics

## North Star Metric
Total API calls processed per day

## Supporting Metrics
- Active users (DAU/WAU/MAU)
- Activation rate (%)
- Churn rate (%)
- Average revenue per user (ARPU)
- Customer acquisition cost (CAC)
- Lifetime value (LTV)

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📚 References

• Inspired by Marty Cagan
• Shape Up by Basecamp
• Product School