Stateless CLI (design/dist/design) wrapping OpenAI Responses API for
UI mockup generation. Three working commands:
- generate: brief -> PNG mockup via gpt-4o + image_generation tool
- check: vision-based quality gate via GPT-4o (text readability, layout
completeness, visual coherence)
- compare: generates self-contained HTML comparison board with star
ratings, radio Pick, per-variant feedback, regenerate controls,
and Submit button that writes structured JSON for agent polling
Auth reads from ~/.gstack/openai.json (0600), falls back to
OPENAI_API_KEY env var. Compiled separately from browse binary
(openai added to devDependencies, not runtime deps).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Prototype script sends 3 design briefs to OpenAI Responses API with
image_generation tool. Results: dashboard (47s, 2.1MB), landing page
(42s, 1.3MB), settings page (37s, 1.3MB) all produce real, implementable
UI mockups with accurate text rendering and clean layouts.
Key finding: Codex OAuth tokens lack image generation scopes. Direct
API key (sk-proj-*) required, stored in ~/.gstack/openai.json.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Garry Tan