Do I need a specification file before using this skill?

Yes, a validated specification in the 'specs/features/' directory is a mandatory prerequisite for this skill to function correctly.

What is the main benefit of the implement skill?

It ensures your code matches your specification exactly, preventing feature creep and ensuring all requirements are validated by tests before completion.

Is TDD mandatory when using this skill?

Yes, the skill follows a strict Red-Green-Refactor cycle for every requirement to ensure high code quality and direct verification of spec criteria.

How does this skill handle deviations from the spec?

It documents deviations during the implementation process and provides a workflow to reconcile them by either correcting the code or using the 'sdd:evolve' skill to update the spec.

Spec-Driven Implementation

Name: Spec-Driven Implementation
Author: rhuss

byrhuss

•

Security & Testing

Generates and executes comprehensive implementation plans from validated specifications using Test-Driven Development and strict compliance checking.

The Spec-Driven Implementation skill is the core execution engine of the Specification-Driven Development (SDD) workflow for Claude Code. It transforms validated feature specifications into actionable implementation plans, orchestrates Test-Driven Development (TDD) cycles, and maintains a strict mapping between code and requirements. By enforcing a 'Spec → Plan → TDD → Verify' process, it prevents feature creep, ensures 100% test coverage for requirements, and provides a systematic way to handle deviations through formal specification evolution.

Key Features

011 GitHub stars

02Automated implementation plan generation directly from Markdown specs

03Continuous spec compliance monitoring and deviation documentation

04Enforced Test-Driven Development (TDD) workflow for all requirements

05Support for isolated workspaces using Git worktrees

06Integrated code review and final verification gates

Use Cases

01Building new features where a validated technical specification already exists

02Ensuring production-grade code matches architectural requirements without silent deviations

03Automating the creation of test suites that map directly to functional requirements

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add rhuss/cc-superpowers-sdd implement

For use in Claude.ai and ChatGPT

Download Skill