Free, no key required, CORS-enabled. Please keep it reasonable: responses are cached for a few minutes, so polling faster than that gains nothing.
GET https://webtelemetry.dev/api/v1/site/<domain>
Tech stack (split into what the site is built with vs. infrastructure and third-party services), TLS certificate details, hosting provider and country, registration date, response time. 404 if not scanned yet.
GET https://webtelemetry.dev/api/v1/launches?view=new&limit=50
view=new: domains registered in the last 30 days; view=all (default): every real site recently profiled. limit up to 100. category=saas (or shop, blog, agency, …) filters by kind of site.
POST https://webtelemetry.dev/api/scan
Content-Type: application/json
{"domain": "example.com"}Rate limited per IP. The result appears at /api/v1/site/<domain> within about a minute.
Hosting location data: IP Geolocation by DB-IP (CC BY 4.0).