developer-handoff

A Codex skill for product managers that turns product ideas into complete delivery assets, including PRDs, interaction specs, UI directions, HTML prototypes, asset specs, and developer handoff materials.

An AI Design Operating System: a twelve-state workflow that takes a product brief to a validated, approved, developer-ready deliverable. State machine, twelve skill contracts, artifact store, and a validation engine that proves the output instead of asserting it.

SpecRelay turns AI-built prototypes into launch QA checklists and developer handoff briefs.