# CrossUp authentication

The CrossUp public marketing site and its public discovery content do not require authentication.

Merchant APIs and MCP services are private and protected by JWT authentication. CrossUp does not offer self-service agent registration today.

For access questions, contact [hola@crossup.ai](mailto:hola@crossup.ai). See the [API catalog](https://crossup.ai/.well-known/api-catalog) for the currently public discovery surface.