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---
name: specification-writing
description: Write feature specifications as requirements and user stories with acceptance criteria, focusing on business value and testable conditions.
allowed-tools: Read, Bash, Grep, Glob, WebFetch, WebSearch, Agent, AskUserQuestion
---
# Specification Writing
## Overview
Write comprehensive feature specifications from business-level descriptions. Produces requirements, user stories, acceptance criteria, and scope boundaries that define WHAT to build without prescribing HOW.
## When to Use
- Defining a new feature before planning or implementation
- Formalizing vague feature requests into structured requirements
- Clarifying scope boundaries for a feature area
- Establishing acceptance criteria for user stories
## Key Principle
Specifications describe desired behavior from the user's perspective. They define **what** the system should do, not **how** it should be built. Business value must be explicit in every requirement.
## Process
1. **Elicit requirements** - Extract functional and non-functional requirements from feature description
2. **Write user stories** - Author stories in standard format with personas
3. **Define acceptance criteria** - Testable conditions for each story (Given/When/Then)
4. **Identify edge cases** - Error scenarios and boundary conditions
5. **Clarify gaps** - Surface and resolve ambiguities and contradictions
6. **Document assumptions** - Make implicit assumptions explicit
7. **Define scope** - Clearly delineate in-scope vs. out-of-scope
8. **Human review** - Approve specification before planning
## Tool Use
Invoke via babysitter process: `methodologies/spec-kit/spec-kit-specification`
Full pipeline: `methodologies/spec-kit/spec-kit-orchestrator`
