Authentication

All `/v1/*` endpoints require your LLM Proxy user API key in Bearer format.

Authorization header format

http

Authorization: Bearer lp_your_user_api_key

How keys are validated

- Key must exist and be active

- Key must not be expired

- User account must be active

- Account must have a valid subscription plan

Common auth error response

json

{
  "error": {
    "message": "Invalid API key.",
    "type": "invalid_request_error",
    "code": "invalid_api_key",
    "param": null
  }
}