Userstack — User-Agent string lookup API

# webdev# api# tools# programming
Userstack — User-Agent string lookup APINick Davies

Looking for a reliable marketing API? Userstack might be exactly what you need. What is...

Looking for a reliable marketing API? Userstack might be exactly what you need.

What is Userstack?

Detect and parse user agents in real-time. Returns browser, OS, device type, and bot detection data for any User-Agent string.

Quick Facts

Detail Info
Category Marketing
Type REST API
Format JSON
Auth API Key
Free Tier Yes

Why Userstack?

  • Production-ready — used by 2.2M+ developers on APILayer
  • One API key — works across all 40+ APILayer APIs
  • Free to start — no credit card required
  • Great docs — clear documentation with code examples
  • Scalable — from hobby projects to enterprise

Get Started

Try Userstack free — sign up takes 30 seconds, no credit card needed.

Userstack is part of APILayer, a platform with 40+ production-ready APIs under one account and one API key.