/specify — Spec Generator

Generate a spec.md through a structured derivation chain. Each layer builds on the previous — no skipping, no out-of-order writes.

Core Rules

1. Write tool is the writer — All spec output goes to {specDir}/spec.md via the Write tool. No CLI, no JSON.
2. Append, don't overwrite — Read existing spec.md before writing. Append new sections or update specific sections in place using Edit.
3. Reference before writing — Read the reference file for the current layer (references/L*) before constructing content.
4. Validate at layer transitions — After writing each layer, read spec.md and verify required sections exist.
5. One layer at a time — Complete and validate each layer before advancing.

Spec Directory