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The Nebius AI Cloud REST API reference describes the available endpoints, request parameters, request bodies and responses. Endpoints are grouped by service, API version and resource. You can try out requests on an endpoint page directly from the browser by specifying the required parameters and adding your access token to the Authorization header.

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Authentication

REST API requests require an access token. You can configure authentication for a user account or service account. For instructions, see Authentication in the Nebius AI Cloud REST API.

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Error responses

When a request fails, the REST API returns a structured JSON error response. For example:
The code value is the numeric canonical gRPC status code, and the message value contains a human-readable description of the error. In this example, code 7 is PERMISSION_DENIED. Nebius APIs use only the canonical codes in the full list of gRPC status codes.