# Validate Server JWT

Validates a server JWT. Checks the following criteria:
- the lifetime of the token
- existence of the Login project
- presence of an authentic signature from the login.xsolla.com server
- value of the request_type field: gateway_token

Endpoint: POST /server/token/validate
Version: v1

## Query parameters:

  - `projectId` (string, required)
    Login project ID from Publisher Account.

## Request fields (application/json):

  - `token` (string, required)
    The server token that is sent by the Xsolla Login server to your server in response to the authentication, user registration, or password reset request when using a [custom data storage](/doc/login/user-data-storage/custom-storage/#login_references_custom_storage).
    Example: "Server token"

## Response 400 fields (application/json):

  - `error` (object, required)

  - `error.code` (string, required)
    Error code.
    Example: "003-061"

  - `error.description` (string, required)
    Error description.
    Example: "Object not found."

  - `error.details` (object)
    Additional information.

## Response 401 fields (application/json):

  - `error` (object, required)

  - `error.code` (string, required)
    Error code.
    Example: "003-061"

  - `error.description` (string, required)
    Error description.
    Example: "Object not found."

  - `error.details` (object)
    Additional information.

## Response 404 fields (application/json):

  - `error` (object, required)

  - `error.code` (string, required)
    Error code.
    Example: "003-061"

  - `error.description` (string, required)
    Error description.
    Example: "Object not found."

  - `error.details` (object)
    Additional information.

## Response 422 fields (application/json):

  - `error` (object, required)

  - `error.code` (string, required)
    Error code.
    Example: "003-061"

  - `error.description` (string, required)
    Error description.
    Example: "Object not found."

  - `error.details` (object)
    Additional information.

## Response 429 fields (application/json):

  - `error` (object, required)

  - `error.code` (string, required)
    Error code.
    Example: "003-061"

  - `error.description` (string, required)
    Error description.
    Example: "Object not found."

  - `error.details` (object)
    Additional information.


## Response 204 fields