StoneX Authentication API

openapi: 3.0.3
info:
  title: StoneX Clearing Accounts Authentication API
  description: The StoneX Clearing REST API provides programmatic access to accounts, trading, and document management for institutional clearing clients. Uses OAuth 2.0 authentication with JWT tokens (10-hour lifetime). Available in UAT and production environments.
  version: '1.0'
  contact:
    url: https://docs.clearing.stonex.com/
servers:
- url: https://api.clearing.stonex.com
  description: StoneX Clearing Production
- url: https://api.clearing.uat.stonex.com
  description: StoneX Clearing UAT (Test)
security:
- BearerAuth: []
tags:
- name: Authentication
  description: OAuth 2.0 token management.
paths:
  /auth/token:
    post:
      operationId: getAuthToken
      summary: Get Authentication Token
      description: Obtain a JWT access token using OAuth 2.0 client credentials. The token is valid for 10 hours and must be passed as a Bearer token in the Authorization header.
      tags:
      - Authentication
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - client_id
              - client_secret
              properties:
                client_id:
                  type: string
                  description: OAuth 2.0 client ID.
                client_secret:
                  type: string
                  description: OAuth 2.0 client secret.
                grant_type:
                  type: string
                  enum:
                  - client_credentials
                  default: client_credentials
      responses:
        '200':
          description: JWT access token returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TokenResponse'
        '401':
          description: Invalid credentials.
components:
  schemas:
    TokenResponse:
      type: object
      properties:
        access_token:
          type: string
          description: JWT Bearer access token.
        token_type:
          type: string
          description: Token type (Bearer).
        expires_in:
          type: integer
          description: Token expiry in seconds (36000 = 10 hours).
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: JWT token from /auth/token endpoint. Valid for 10 hours.