Username Profanity API templates

A working app built on the Username Profanity API.

Deploy one to Vercel with your free API key and it's live in about a minute, or clone it from GitHub and make it your own. See all templates.

Block offensive usernames at signup, including profanity hidden inside a longer name.

Build with Username Profanity. One free key unlocks all 300+ APIs.

300+ APIs on the same key and the same response shape.