# Sparc Specification Sparc Specification Phase

> Sub-skill of sparc-specification: SPARC Specification Phase (+1).

- Skill: `vamseeachanta/sparc-specification-sparc-specification-phase` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/sparc-specification-sparc-specification-phase`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/sparc-specification-sparc-specification-phase/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/sparc-specification-sparc-specification-phase

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# SPARC Specification Phase (+1)

## SPARC Specification Phase


The Specification phase is the foundation of SPARC methodology:

1. **Define clear, measurable requirements** - Avoid ambiguity
2. **Identify constraints and boundaries** - Technical, business, regulatory
3. **Create acceptance criteria** - Testable pass/fail conditions
4. **Document edge cases and scenarios** - What happens when things go wrong
5. **Establish success metrics** - How to measure completion

## Requirement Types


| Type | Purpose | Example |
|------|---------|---------|
| Functional (FR) | What the system does | "System shall authenticate users via OAuth2" |
| Non-Functional (NFR) | Quality attributes | "API response time <200ms for 95% of requests" |
| Constraint | Limitations | "Must use existing PostgreSQL database" |