# Can my MCP client register itself with Casafari?

> **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).

Yes, a client that acts for a signed-in person can register itself once at the registration endpoint; a client with no person to sign in cannot, and uses credentials Casafari issues instead.

Send a `POST` with `client_name`, your `redirect_uris`, `grant_types` set to `["authorization_code", "refresh_token"]`, and `token_endpoint_auth_method` set to `none`. Each redirect URI must use `https`, `http` on a loopback host, or a private-use scheme, and must not include a fragment. Any other grant type, redirect URI, or auth method is rejected with `400 invalid_client_metadata`, so never request `client_credentials` there. The `201` response contains the `client_id`. Store it and don't register again. A public client has no secret and authenticates with PKCE (`S256`).

See: [Authentication](https://platform.casafari.com/docs/authentication) and [casafari.com/auth.md](https://www.casafari.com/auth.md).

## Where this is documented

- [Authentication](https://platform.casafari.com/docs/authentication)

## Related questions

- [How does authentication work on Casafari MCP? Does it use OAuth scopes?](https://platform.casafari.com/docs/faq/how-authentication-works)
- [How does a client discover Casafari's authorization server?](https://platform.casafari.com/docs/faq/oauth-discovery)
- [How does an agent sign in when no person is there to approve?](https://platform.casafari.com/docs/faq/unattended-agents)
- [What happens when my access token expires?](https://platform.casafari.com/docs/faq/token-expiry-refresh)
- [How do I authenticate with the Casafari REST API?](https://platform.casafari.com/docs/faq/rest-authentication)

All questions: https://platform.casafari.com/docs/faq#dynamic-client-registration