Specification Creation

Generate technology-agnostic feature specifications with success criteria and acceptance scenarios.

1|Updated Oct 24, 2025
One-click install
npx skills add https://github.com/yangsi7/skill-builder --skill specification-creation
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: Specification Creation
Source: https://github.com/yangsi7/skill-builder/tree/main/.claude/skills/specify-feature
Command: npx skills add https://github.com/yangsi7/skill-builder --skill specification-creation

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires fd, git, project-intel.mjs, Read, Write, Edit, Grep, and includes examples (resource) and references (resource) and workflows (resource) components.

What problem does it solve?

This Skill prevents starting development without a clear, technology-agnostic understanding of what to build and why, which often leads to scope creep, rework, and misaligned outcomes. It ensures every feature begins with a solid, user-centric foundation.

Core Features & Use Cases

  • Pre-Specification Quality Gate: Assesses user input for clarity, value, and completeness before creating the specification, preventing wasted effort.
  • Intelligence-First Contextualization: Queries the codebase to identify existing patterns and architectural context, ensuring new features align with the project.
  • Automated Workflow Progression: After creating a clear spec.md, it automatically triggers the entire planning workflow (/plangenerate-tasks/audit), delivering an implementation-ready task breakdown.
  • Use Case: You have a new feature idea. Instead of jumping straight to code, use this Skill to generate a comprehensive spec.md with problem statements, user stories, and success criteria. The Skill then automatically handles all subsequent planning, task generation, and auditing, leaving you with an /implement-ready plan.

Quick Start

To define a new feature and kickstart the entire SDD workflow:

Provide a clear description of what you want to build.

Then, simply invoke the skill:

/feature "I want to build a user authentication system with social login options."

Frequently Asked Questions about Specification Creation

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a feature specification before starting development?

Feature specification captures what to build and why through user needs, requirements, and success criteria—without implementation details. This Skill generates a technology-agnostic `spec.md` from your input, ensuring clarity and alignment before coding begins, preventing scope creep and rework.

What should I include in a feature specification to avoid rework later?

A complete specification includes problem statements, user stories, measurable success criteria, and acceptance scenarios. This Skill assesses input for clarity and completeness at a pre-specification quality gate, then queries your codebase for existing patterns to ensure the feature aligns with your architecture.

Can I automate planning and task generation after writing a specification?

Yes. After this Skill creates your `spec.md`, it automatically triggers the full planning workflow—running `/plan`, generating tasks, and auditing—so you get an implementation-ready task breakdown without manual handoff between steps.

How does specification-first development reduce miscommunication on teams?

Specification-first establishes a shared, written understanding of what needs to be built before development starts. This Skill captures user-centric requirements and success criteria in a single document, aligning the team on scope, value, and measurable outcomes upfront.

What's the difference between feature specifications and implementation plans?

Specifications answer *what* and *why*—user needs, requirements, and success criteria. This Skill generates technology-agnostic specs; implementation plans follow afterward and answer *how*—the actual code, architecture, and task breakdown your team executes.

Do I need existing code context to create a specification with this Skill?

The Skill can work without existing code, but it performs better with codebase context. It queries your project to identify existing patterns and architectural alignment, ensuring new features fit your current stack and design patterns.