Userstack API
Data Validation · Utility Tools
Real-time User-Agent parser & device detection REST API with 10,000 free monthly requests
Userstack API Highlights
Userstack API is best for web applications, analytics platforms, security monitoring, and responsive UX optimization
API Key (Query parameter access_key)
Free tier: 10,000 requests/month; paid plans from 50,000 to 2,000,000 req/mo
Nigeria
Ghana
KenyaUserstack by APILayer is a real-time User-Agent string parsing and device detection REST API. It parses raw HTTP User-Agent strings and returns detailed metadata about the visitor's browser (name, version, engine), operating system (name, version, platform), and device hardware (type, brand, model, screen orientation).
In Nigeria, where mobile users access services across thousands of varied budget Android devices (Tecno, Infinix, itel, Xiaomi) alongside iOS devices, Userstack allows web developers to optimize asset sizes, tailor onboarding experiences, and detect web scrapers and malicious bots.
Userstack API Core Features & Capabilities
| Feature | Status | Description & Capabilities |
|---|---|---|
| Device Brand & Model Detection | ✓ Supported | Provides native Device Brand & Model Detection capabilities integrated within the API. |
| Browser & Engine Parsing | ✓ Supported | Provides native Browser & Engine Parsing capabilities integrated within the API. |
| Operating System Versioning | ✓ Supported | Verify customer credentials and identity against verified regulatory databases. |
| Bot & Spider Flagging | ✓ Supported | Provides native Bot & Spider Flagging capabilities integrated within the API. |
| Batch User-Agent Lookups | ✓ Supported | Provides native Batch User-Agent Lookups capabilities integrated within the API. |
| Client Hints Parsing | ✓ Supported | Provides native Client Hints Parsing capabilities integrated within the API. |
- Free tier provides up to 10,000 requests per month
- Paid tiers start from $9.99/month for 50,000 requests with bot detection and bulk lookups
Required Access Documents for Userstack API
- Userstack AccountRequiredSign up at userstack.com to retrieve your access key
Different Userstack API use cases
- Mobile Device Optimization:Serve lighter image assets and video formats to low-memory Android mobile devices.
- Security Login Notifications:Send login alerts showing the exact device and browser used (e.g., 'New login from Tecno Spark 10').
- Bot Traffic Filtering:Identify and filter automated web scrapers before they hit heavy backend database queries.