How does it ensure the plan is accurate?

It validates every task against the PRD and SDD to ensure 100% requirement coverage and checks for circular dependencies or missing specification references.

Why does it create multiple files in .start/specs/?

It uses a multi-file structure for progressive disclosure, keeping the main manifest clean while providing deep, phase-specific details in separate files.

What is the 'Prime, Test, Implement, Validate' pattern?

It is a task-level TDD structure where the developer is told what to read first (Prime), what test must fail (Test), what code to write (Implement), and how to verify the final result (Validate).

Does this skill generate the actual source code?

No, this skill focuses on the planning phase. it creates a detailed, executable roadmap of tasks that guide the implementation process according to TDD principles.

Spec-Driven Implementation Planning

Name: Spec-Driven Implementation Planning
Author: rsmdt

byrsmdt

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216

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生产力与工作流

Transforms high-level requirements into executable, TDD-based implementation roadmaps with automated validation.

The specify-plan skill acts as an implementation architect for Claude Code, breaking down complex features into structured, verifiable tasks. By analyzing PRDs and System Design Documents, it generates a multi-phase execution strategy stored in a dedicated directory. Each task within the plan follows strict Test-Driven Development (TDD) principles—defining what to read, what to test, how to implement, and how to validate. This ensures that every developer or agent has a clear, unambiguous path to production without requiring constant clarification.

主要功能

01216 GitHub stars

02Identifies parallel execution opportunities and explicit task dependencies.

03Enforces a TDD-first task structure (Prime, Test, Implement, Validate) for all deliverables.

04Generates multi-phase roadmaps with progressive disclosure using separate phase files.

05Automates traceability mapping between PRD/SDD requirements and implementation tasks.

06Provides a standardized validation gate to ensure plan completeness and spec compliance.

使用场景

01Creating a test-first implementation strategy for complex backend or frontend components.

02Validating that a technical implementation plan covers 100% of business requirements.

03Breaking down a monolithic feature request into manageable, sequential coding phases.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add rsmdt/the-startup specify-plan

For use in Claude.ai and ChatGPT

Download Skill