# Classify

## Docs

- [Classify URLs](https://docs.classify.ai/api-reference/classification/classify-urls.md): Classify up to 1000 URLs per request. In-index URLs return classifications inline (Lookup lane, billed per 1K lookups). The rest are enqueued under a single job for live classification (Live Classify lane). Requires bearer auth.
- [Poll a live-classification job](https://docs.classify.ai/api-reference/classification/poll-a-live-classification-job.md): Returns job status and per-URL results. Each result carries a diag object (strings, paragraphs, chars, top_distance) showing what was extracted. Statuses: classified, no_match, insufficient_content, error. Requires bearer auth.
- [Liveness check](https://docs.classify.ai/api-reference/system/liveness-check.md): Unauthenticated. Returns 200 when the API and database are up.
- [Billing](https://docs.classify.ai/billing.md): How usage maps to your invoice.
- [Introduction](https://docs.classify.ai/index.md): URL-level classification against the ContentGraph index. Priced per URL, never per token.
- [Quickstart](https://docs.classify.ai/quickstart.md): First classification in under a minute.

## OpenAPI Specs

- [openapi](https://api.classify.ai/openapi.json)