# Authenticate

Authenticates with username/password and receive a session token for use on other API calls.  Requires Authorization and MT-Product headers.   See Authentication page for further details.

Endpoint: GET /authenticate
Version: 1.5
Security: 

## Path parameters:

  - `version` (string, required)
    The version of the API.
    Enum: "1.0", "1.1", "1.2", "1.3", "1.4", "1.5"

## Response 401 fields (application/json):

  - `error` (string)
    Example: "Invalid credentials"

## Response 500 fields (application/json):

  - `error` (string)
    Example: "Encountered an unknown error. It has been reported. Please contact support@moneythumb.com for any questions."

  - `requestId` (string)
    Unique identifier for the request, useful for tracing.

## Response 503 fields (application/json):

  - `error` (string)
    Example: "Service unavailable"