# Where is the documentation and sign-in for the existing Casafari API?

> **Casafari is the AI agent-native real estate data intelligence platform.** The most complete property index in Europe: a deduplicated, cleaned property graph of residential and commercial property, for sale and for rent, in 16 countries. Every property is one record with its full price and market history. [How the property graph is built](/docs/property-graph).

The existing Casafari API is documented in this hub under [Existing API customers](https://developers.casafari.com/docs/existing-api-customers) and [REST API](https://developers.casafari.com/docs/rest), with a public OpenAPI description.

The public OpenAPI description is at https://docs.api.casafari.com/openapi.json.

- [API v1 reference](https://developers.casafari.com/docs/existing-api-customers/v1) and [API v2 reference](https://developers.casafari.com/docs/existing-api-customers/v2).
- Your account's own operations: sign in at https://docs.api.casafari.com/ to see the operations your account may call.

Sign-in works two ways:

- Email and password: `POST https://api.casafari.com/login` returns an access and a refresh token (JWT); `GET /refresh-token` renews the access token.
- API client, for an integration with no person in the loop: the account owner creates it in Settings → API Clients on https://docs.api.casafari.com/ and hands over its `client_id` and `client_secret`, which you exchange at `https://api.casafari.com/oauth/token`.

Details: [REST authentication](https://developers.casafari.com/docs/faq/rest-authentication).

## Where this is documented

- [Existing API customers](https://developers.casafari.com/docs/existing-api-customers)
- [REST API: a real estate API for AI agents and apps](https://developers.casafari.com/docs/rest)
- [Existing Casafari API: API v1 reference](https://developers.casafari.com/docs/existing-api-customers/v1)
- [Existing Casafari API: API v2 reference](https://developers.casafari.com/docs/existing-api-customers/v2)

## Related questions

- [I already have Casafari MCP or API access. Does anything change for me?](https://developers.casafari.com/docs/faq/existing-client-what-changes)
- [My assistant says 'Request limit reached for this product.' Is that the same as running out of units?](https://developers.casafari.com/docs/faq/existing-quota-vs-units)

All questions: https://developers.casafari.com/docs/faq#existing-api-reference