Userstack

Userstack — free tier with API key

🔧 Developer ToolsHEALTHYchecked 8h ago
AUTH APIKEYCORS AGENT HTTPS COMMERCIAL ?

Userstack exposes a free-tier JSON API. Register for an API key if required; we verified a public or demo endpoint.

93HOW IT'S SCORED ⓘ
Status badge · for your READMEshipapis health badge: 93 · healthy
Uptime history
99.02%90 days
98.3%30 days
443P50 · ms
3029P95 · ms
operationalpartialdownno data
Response time · last 48 checks
Fastest 101 ms, slowest 2094 ms, most recent 282 ms.
Live response samplecaptured by our last successful check
GET https://api.userstack.com/detect

{
  "success": false,
  "error": {
    "code": 101,
    "type": "missing_access_key",
    "info": "You have not supplied an API Access Key. [Required format: access_key=YOUR_ACCESS_KEY]"
  }
}
Call itcurl · fetch · python
curl "https://api.userstack.com/detect"
const res = await fetch("https://api.userstack.com/detect");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://api.userstack.com/detect")
print(res.json())
Endpoints · 3HealthyFULL DOCS ↗
Monitored path responding — GET /detect443 mschecked 8h ago
GET/detectPROBED

Userstack — free tier with API key

GET/detect?limit=5

Paginated variant with limit parameter.

GET/detect?${querystring.stringify(query

Search results filtered by query parameters.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

Userstack: common questions

Is Userstack free to use?

Yes — Userstack is a free developer tools API. Free tier: Free tier — API key required. Whether the free tier allows commercial use is unclear — check the provider docs.

Does Userstack need an API key?

Yes — Userstack needs a free API key, which you pass on each request. Rate limits: Unpublished.

Can I call Userstack from the browser?

Yes — Userstack returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is Userstack up right now?

As of our last scheduled check, Userstack is healthy with 99.02% uptime over 90 days and a 443 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.