Key features:
- Free to use, no signup or API key needed
- Both companies and domain names work as input identifiers
- WebP format for smaller payloads and better cache hit rates
Stack: S3 for storage, heavily cached fastapi, Next.js for the site. Everything's behind Cloudflare for proper CDN/caching. This was the first time I tried to build something end-to-end from idea to deployment with Claude Code (Max) and I have to say, Opus 4.5 took it like a champ!
For the younger folks, here's what the old Clearbit API looked like: https://web.archive.org/web/20230920164055/https://clearbit....
Happy to answer questions about the implementation or hear your thoughts!