What is the SDD workflow used by this skill?

Spec-Driven Development (SDD) is a methodology where implementation is strictly guided by formal design specifications and rigorous test-first patterns.

Does it generate actual test code snippets?

Yes, for each implementation task, it provides 'RED' stage test code templates (typically in TypeScript) to define expected behavior before coding begins.

How do I mark the generated tasks as ready for implementation?

After reviewing and saving the tasks to your project's spec folder, use the 'sdd-approve tasks' MCP tool to finalize the phase.

How does this skill apply the Test Pyramid?

It structures task breakdowns to ensure a healthy distribution of tests: 70% unit tests for speed, 20% integration tests for component interaction, and 10% E2E tests for user journeys.

Can I use this skill without a prior design document?

No, this skill is designed to work with the /sdd-design process. It requires an approved design document in the .spec/ directory to ensure tasks align with the architecture.

SDD Task Breakdown Generator

Name: SDD Task Breakdown Generator
Author: yi-john-huang

byyi-john-huang

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Productivity & Workflow

Generates comprehensive, TDD-driven task breakdowns from design specifications to streamline implementation workflows.

This skill automates the transition from the design phase to implementation by creating a structured roadmap of tasks rooted in Test-Driven Development (TDD) principles. It analyzes approved design documents and generates a hierarchical breakdown of unit, integration, and E2E tests following the 70/20/10 test pyramid ratio. By providing explicit Red-Green-Refactor steps, standardized task sizing, and clear acceptance criteria, it ensures that developers maintain high code quality and measurable progress tracking throughout the development lifecycle.

Key Features

01Standardized task sizing (S to XL) for accurate effort estimation

02Automated TDD task generation using the Red-Green-Refactor cycle

03Hierarchical task grouping with explicit dependency mapping

04Integrated 'Definition of Done' and quality checklists for every feature

052 GitHub stars

06Adherence to the 70/20/10 Test Pyramid ratio for optimal coverage

Use Cases

01Estimating development timelines by generating sized tasks based on design complexity

02Breaking down complex software designs into manageable, testable implementation units

03Enforcing consistent TDD practices and testing standards across a development team

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add yi-john-huang/acmg-amp-classifier-mcp sdd-tasks

For use in Claude.ai and ChatGPT

Download Skill