Skip to main content
Classify tells you what a page is about, not what site it lives on. The API classifies any URL against ContentGraph: an embedding-native semantic index of the open web, labeled at the page level with the IAB 3.1 taxonomy.

​
Two ways to classify

Lookup

The URL is already in ContentGraph. Classifications return inline in under 50ms, billed at the lookup rate.

Live Classify

The URL is new to us. We fetch it, embed it, and classify it in seconds. Poll the job for results. Every live result joins the index.
The response tells you which path served each URL, and billing follows the path.

​
Endpoints

Three endpoints, one auth scheme:
EndpointWhat it does
POST /v1/classifyClassify up to 1000 URLs per request
GET /v1/jobs/{job_id}Poll a live-classification job
GET /healthUnauthenticated liveness check
Try them in the API Reference with your key.