ReqRes Authentication API

openapi: 3.0.3
info:
  title: ReqRes Agent Sandbox Authentication API
  description: 'OpenAPI specification for the ReqRes API. Covers legacy demo endpoints, collections, app-user auth flows, custom endpoints, and the Agent Sandbox (/agent/v1/*) for AI coding agents. All /api/* endpoints require x-api-key. All /app/* endpoints require Authorization: Bearer <session_token>. /agent/v1/* endpoints are open in v1 (IP-based rate limiting).'
  version: 2.1.0
  contact:
    name: ReqRes Support
    url: https://reqres.in
    email: hello@reqres.in
  license:
    name: MIT
    url: https://opensource.org/licenses/MIT
  x-generated-from: documentation
  x-last-validated: '2026-05-29'
  x-source-url: https://reqres.in/openapi.json
servers:
- url: https://reqres.in
  description: Production server
- url: http://localhost:8000
  description: Development server
tags:
- name: Authentication
paths:
  /api/register:
    post:
      summary: ReqRes Register User
      description: Register a demo user account.
      operationId: registerUser
      tags:
      - Authentication
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AuthRequest'
      responses:
        '200':
          description: Successful registration
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RegisterResponse'
        '400':
          description: Error response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      security:
      - ApiKeyAuth: []
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /api/login:
    post:
      summary: ReqRes Login User
      description: Authenticate a demo user and return a token.
      operationId: loginUser
      tags:
      - Authentication
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AuthRequest'
      responses:
        '200':
          description: Successful login
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LoginResponse'
        '400':
          description: Error response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      security:
      - ApiKeyAuth: []
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /api/logout:
    post:
      summary: ReqRes Logout User
      description: Legacy logout endpoint (returns empty object).
      operationId: logoutUser
      tags:
      - Authentication
      responses:
        '200':
          description: Logged out
          content:
            application/json:
              schema:
                type: object
                additionalProperties: true
      security:
      - ApiKeyAuth: []
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    LoginResponse:
      type: object
      properties:
        token:
          type: string
      required:
      - token
    AuthRequest:
      type: object
      properties:
        email:
          type: string
          format: email
        password:
          type: string
      required:
      - email
      - password
    RegisterResponse:
      type: object
      properties:
        id:
          type: integer
        token:
          type: string
      required:
      - token
      additionalProperties: true
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
      additionalProperties: true
      required:
      - error
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: session_token