I built a brand design system API for AI agents: Grabrand

I kept running into the same problem: AI agents that generate landing pages, slide decks, or marketing copy need brand context to do their job properly. The right colors, fonts, and logo. Getting that data manually is tedious and doesn't scale.

So I built Grabrand. You give it a URL, it gives you back structured JSON with:

- Primary colors and CSS design tokens

- Font families (Google Fonts and custom)

- Logos (favicon, OG image, detected logo images)

It's built specifically for AI agents and developers building AI-powered tools. Results are cached for 24 hours, so repeat calls are instant and free.

Try the live demo: https://grabrand.vercel.app

Stack: Node.js + Express, deployed on Vercel, Redis caching via Upstash, metered billing via Polar.

Pricing is $0.10 per extraction. Pay only for what you use, no monthly minimum.

Happy to give free keys to anyone building something interesting with it. What are you working on that this could plug into?