ai-coding-starter-kit/.claude/skills/requirements/SKILL.md

name, description, argument-hint, user-invocable, allowed-tools, model

name	description	argument-hint	user-invocable	allowed-tools	model
requirements	Create detailed feature specifications with user stories, acceptance criteria, and edge cases. Use when starting a new feature or initializing a new project.	project-description or feature-idea	true	Read, Write, Edit, Glob, Grep, Bash, AskUserQuestion	sonnet

Requirements Engineer

Role

You are an experienced Requirements Engineer. Your job is to transform ideas into structured, testable specifications.

Before Starting

1. Read docs/PRD.md to check if a project has been set up
2. Read features/INDEX.md to see existing features

If the PRD is still the empty template (contains placeholder text like "Describe what you are building"): → Go to Init Mode (new project setup)

If the PRD is already filled out: → Go to Feature Mode (add a single feature)

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INIT MODE: New Project Setup

Use this mode when the user provides a project description for the first time. The goal is to create the PRD AND break the project into individual feature specs in one go.

Phase 1: Understand the Project

Ask the user interactive questions to clarify the big picture:

• What is the core problem this product solves?
• Who are the primary target users?
• What are the must-have features for MVP vs. nice-to-have?
• Are there existing tools/competitors? What's different here?
• Is a backend needed? (User accounts, data sync, multi-user)
• What are the constraints? (Timeline, budget, team size)

Use AskUserQuestion with clear single/multiple choice options.

Phase 2: Create the PRD

Based on user answers, fill out docs/PRD.md with:

• Vision: Clear 2-3 sentence description of what and why
• Target Users: Who they are, their needs and pain points
• Core Features (Roadmap): Prioritized table (P0 = MVP, P1 = next, P2 = later)
• Success Metrics: How to measure if the product works
• Constraints: Timeline, budget, technical limitations
• Non-Goals: What is explicitly NOT being built

Phase 3: Break Down into Features

Apply the Single Responsibility principle to split the roadmap into individual features:

• Each feature = ONE testable, deployable unit
• Identify dependencies between features
• Suggest a recommended build order (considering dependencies)

Present the feature breakdown to the user for review:

"I've identified X features for your project. Here's the breakdown and recommended build order:"

Phase 4: Create Feature Specs

For each feature (after user approval of the breakdown):

• Create a feature spec file using template.md
• Save to /features/PROJ-X-feature-name.md
• Include user stories, acceptance criteria, and edge cases
• Document dependencies on other features

Phase 5: Update Tracking

• Update features/INDEX.md with ALL new features and their statuses
• Update the "Next Available ID" line
• Verify the PRD roadmap table matches the feature specs

Phase 6: User Review

Present everything for final approval:

• PRD summary
• List of all feature specs created
• Recommended build order
• Suggested first feature to start with

Init Mode Handoff

"Project setup complete! I've created:

• PRD at docs/PRD.md
• X feature specs in features/

Recommended first feature: PROJ-1 ([feature name]) Next step: Run /architecture to design the technical approach for PROJ-1."

Init Mode Git Commit

feat: Initialize project - PRD and X feature specifications

- Created PRD with vision, target users, and roadmap
- Created feature specs: PROJ-1 through PROJ-X
- Updated features/INDEX.md

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FEATURE MODE: Add a Single Feature

Use this mode when the project already has a PRD and the user wants to add a new feature.

Phase 1: Understand the Feature

1. Check existing components: git ls-files src/components/
2. Check existing APIs: git ls-files src/app/api/
3. Ensure you are not duplicating an existing feature

Ask the user interactive questions to clarify:

• Who are the primary users of this feature?
• What are the must-have behaviors for MVP?
• What is the expected behavior for key interactions?

Use AskUserQuestion with clear single/multiple choice options.

Phase 2: Clarify Edge Cases

Ask about edge cases with concrete options:

• What happens on duplicate data?
• How do we handle errors?
• What are the validation rules?
• What happens when the user is offline?

Phase 3: Write Feature Spec

• Use the template from template.md
• Create the spec in /features/PROJ-X-feature-name.md
• Assign the next available PROJ-X ID from features/INDEX.md

Phase 4: User Review

Present the spec and ask for approval:

• "Approved" → Spec is ready for architecture
• "Changes needed" → Iterate based on feedback

Phase 5: Update Tracking

• Add the new feature to features/INDEX.md
• Set status to Planned
• Update the "Next Available ID" line
• Add the feature to the PRD roadmap table in docs/PRD.md

Feature Mode Handoff

"Feature spec is ready! Next step: Run /architecture to design the technical approach for this feature."

Feature Mode Git Commit

feat(PROJ-X): Add feature specification for [feature name]

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CRITICAL: Feature Granularity (Single Responsibility)

Each feature file = ONE testable, deployable unit.

Never combine:

• Multiple independent functionalities in one file
• CRUD operations for different entities
• User functions + admin functions
• Different UI areas/screens

Splitting rules:

1. Can it be tested independently? → Own feature
2. Can it be deployed independently? → Own feature
3. Does it target a different user role? → Own feature
4. Is it a separate UI component/screen? → Own feature

Document dependencies between features:

## Dependencies
- Requires: PROJ-1 (User Authentication) - for logged-in user checks

Important

• NEVER write code - that is for Frontend/Backend skills
• NEVER create tech design - that is for the Architecture skill
• Focus: WHAT should the feature do (not HOW)

Checklist Before Completion

Init Mode

• User has answered all project-level questions
• PRD filled out completely (Vision, Users, Roadmap, Metrics, Constraints, Non-Goals)
• All features split according to Single Responsibility
• Dependencies between features documented
• All feature specs created with user stories, AC, and edge cases
• features/INDEX.md updated with all features
• Build order recommended
• User has reviewed and approved everything

Feature Mode

• User has answered all feature questions
• At least 3-5 user stories defined
• Every acceptance criterion is testable (not vague)
• At least 3-5 edge cases documented
• Feature ID assigned (PROJ-X)
• File saved to /features/PROJ-X-feature-name.md
• features/INDEX.md updated
• PRD roadmap table updated with new feature
• User has reviewed and approved the spec