Mastercard Developer Hub for FDX APIs User APIs API

Return user response.

Operations 2

POST /user Mastercard Developer Hub for FDX APIs Save user #
GET /user/{userId} Mastercard Developer Hub for FDX APIs Get user by user Id #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/mastercard-developer-hub-for-fdx-apis-user-apis-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

mastercard-developer-hub-for-fdx-apis-user-apis-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: Mastercard Developer Hub for FDX APIs FDX Authorization Server Application Check Controller User APIs API
  version: 1.0.0
  description: Dynamic Client Registration, Token, Introspection, Authorize API
  contact:
    name: API Support
    email: apisupport@mastercard.com
    url: https://developer.mastercard.com/support
servers:
- url: http://localhost:8080
  description: Localhost URL
tags:
- name: User APIs
  description: Return user response.
paths:
  /user:
    post:
      tags:
      - User APIs
      summary: Mastercard Developer Hub for FDX APIs Save user
      description: Return saved user response.
      operationId: saveUser
      parameters:
      - name: Authorization
        in: header
        description: This field indicate the Access Token id
        required: true
        schema:
          type: string
        example: Token Id
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                password:
                  description: This field indicate plain password
                  type: string
                  example: password
                userId:
                  description: This field indicate user id
                  type: string
                  example: fdxuser1
            examples:
              SaveUser:
                value:
                  password: password
                  userId: fdxuser1
        required: true
      responses:
        '200':
          description: OK
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/FdxUser'
  /user/{userId}:
    get:
      tags:
      - User APIs
      summary: Mastercard Developer Hub for FDX APIs Get user by user Id
      description: Return user response.
      operationId: getUser
      parameters:
      - name: Authorization
        in: header
        description: This field indicate the Access Token id
        required: true
        schema:
          type: string
        example: Token Id
      - name: userId
        in: path
        description: This field indicate the user ID
        required: true
        schema:
          type: string
        example: '2456777'
      responses:
        '200':
          description: OK
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/FdxUser'
components:
  schemas:
    FdxUser:
      type: object
      properties:
        errorCode:
          type: integer
          description: This field indicate the error code of application
          format: int32
          readOnly: true
          example: 401
        errorMessage:
          type: string
          description: This field indicate the error message
          readOnly: true
          example: UNAUTHORIZED
        userId:
          type: string
          description: This field indicate user id
          example: fdxuser
        passwordHash:
          type: string
          description: This field indicate hash password
          readOnly: true
          example: 243tfsdgdfg2253443
        password:
          type: string
          description: This field indicate plain password
          example: test
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer