Spec Writing

name: specification-writing-skill description: This skill provides guidance for creating feature specifications in the Spec-Driven Development process.

Specification Writing Skill

Purpose

This skill provides guidance for creating feature specifications in the Spec-Driven Development process.

Project Phases Structure

The project is organized into 5 distinct phases:

• Phase 01: Todo In-Memory Python Console App
• Phase 02: Todo Full-Stack Web Application
• Phase 03: Todo AI Chatbot
• Phase 04: Local Kubernetes Deployment
• Phase 05: Advanced Cloud Deployment

Specifications Folder Structure

specs/
├── phase-01/
│   ├── 001-<feature-name>/
│   │   └── spec.md
│   └── 002-<feature-name>/
│       └── spec.md
├── phase-02/
│   └── 001-<feature-name>/
│       └── spec.md
├── phase-03/
│   └── 001-<feature-name>/
│       └── spec.md
├── phase-04/
│   └── 001-<feature-name>/
│       └── spec.md
└── phase-05/
    └── 001-<feature-name>/
        └── spec.md

Feature Specification Format

Each feature specification includes:

• Feature title and metadata
• User scenarios & testing (with priorities P1-P4)
• Functional requirements (FR-001 to FR-nn)
• Key entities
• Success criteria

PHR Structure

Prompt History Records are stored in:

history/prompts/
├── phase-01/
│   ├── 001-todo-app/
│   │   └── <ID>-<slug>.<stage>.prompt.md
│   └── 002-<feature-name>/
│       └── <ID>-<slug>.<stage>.prompt.md
├── phase-02/
│   ├── 001-<feature-name>/
│   │   └── <ID>-<slug>.<stage>.prompt.md
│   └── 002-<feature-name>/
│       └── <ID>-<slug>.<stage>.prompt.md
└── general/
    └── <ID>-<slug>.general.prompt.md

Naming Convention

• Feature branches: {###}-{feature-name} (e.g., 001-todo-app)
• Spec directories: phase-{nn}/{###}-{feature-name} (e.g., phase-01/001-todo-app)
• PHR files: {ID}-{slug}.{stage}.prompt.md (e.g., 1-todo-app-created.spec.prompt.md)

Best Practices

1. Prioritize user stories with clear P1-P4 priorities
2. Define clear acceptance scenarios with Given/When/Then format
3. Document functional requirements with specific capabilities
4. Consider edge cases and error handling
5. Define measurable success criteria

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