# Feature Spec

> Turn a feature request into a scoped, buildable spec with a clear success measure.

- Skill: `tinyhumansai/feature-spec` (Agent Skill)
- Install (CLI): `npx skillmds@latest add tinyhumansai/feature-spec`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tinyhumansai/feature-spec/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tinyhumansai (https://skillmd.com/u/tinyhumansai)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/tinyhumansai/feature-spec

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# Feature Spec

Take a raw request and shape it into a spec engineering can build and everyone
agrees on.

## When to use

- A feature is greenlit and needs definition before work starts.
- A vague request needs scoping before it can be estimated.

## Steps

1. **State** the problem and the user it is for, not the solution.
2. **Define** the scope: what is in, what is explicitly out.
3. **Describe** the flows and the key states and edge cases.
4. **Set** the success measure and how it will be checked.
5. **Flag** risks, dependencies, and open questions for the operator.

## Output

A spec: problem, scope, flows, success measure, and open questions — following
the [[Engineering standards]]. Ready to estimate and build.