# Eigenspec Skill

A one-file Claude Code skill that writes implementation specs.
Free download. MIT license.

## Why
Most teams burn weeks arguing about the wrong axes of a spec. Eigenspec encodes the
day-one questions our four founders always end up asking on a paid engagement.

## Install
```bash
mkdir -p ~/.claude/skills/eigenspec
curl -L https://raw.githubusercontent.com/squatch-c-c/eigenspec-skill/main/SKILL.md \
     -o ~/.claude/skills/eigenspec/SKILL.md
```

## Use
```text
> /eigenspec "build a passkey auth flow for an Expo RN app, ship to TestFlight in 10 days"
```

Output is a one-page markdown spec with:
- Goal & non-goals
- Assumptions & constraints (load-bearing only)
- Phased plan — week 1, 2, 3 deliverables
- Test plan — the test that proves it works
- Risk register — ranked, with mitigations
- Rollback — how we back out

## When to use it
1. You're starting something with >3 unknowns. (Most things.)
2. You're scoping a vendor engagement and want a sane RFP draft.
3. You're an engineer trying to convince the team the work is bounded.

## Works with
- Claude Code (native skill)
- Cursor (via `.cursorrules`)
- Continue.dev

## License
MIT. Source: `github.com/squatch-c-c/eigenspec-skill`.

## Got a spec ready?
Draft a spec with this skill, send it through our intake, and we'll come back with a
tier recommendation and a fixed-price bid within one business day.

[Send your spec](/hire) · [Start a retainer](/services#retainers)