Tessl Spec-Driven Framework ↗

Editorial Notes

Tessl takes the most opinionated approach to SDD: code generated from specifications is marked with “GENERATED FROM SPEC - DO NOT EDIT” comments, enforcing a strict spec-as-source model where the specification is always authoritative. The Spec Registry adds a team collaboration layer, allowing specifications to be shared, versioned, and reused across projects. Compare with GitHub Spec Kit’s lighter-touch approach to understand the spectrum of SDD tooling philosophies.