username.dev is a comprehensive API solution for username governance that helps platforms prevent abuse, protect brands, and manage premium handles with a single API call. It eliminates the need for custom internal reserved lists by providing standardized filtering across 15+ categories of restricted terms.
Key benefits include:
- 15+ Categories: Instantly identify brands, public figures, offensive terms, and system-reserved keywords like admin or support.
- Global Edge Network: 300+ Cloudflare-powered edge locations ensure sub-200ms latency worldwide.
- Metadata Enrichment: Get contextual data including country codes, languages, and category IDs beyond simple boolean responses.
- Smart Normalization: Automatically handles case sensitivity, unicode characters, and whitespace variations.
- High Performance: Built on KV and D1 storage for blazing-fast reads with P95 latency under 300ms.
Perfect for product teams, trust & safety professionals, and growth teams at social platforms, marketplaces, or communities where username integrity is critical.
