Marriott International Reservations API

openapi: 3.1.0
info:
  title: Marriott Developer Availability Reservations API
  description: The Marriott Developer API provides programmatic access to Marriott International's hotel and property systems. The API enables integration with Marriott's Central Reservation System for property search, availability lookup, and booking management across Marriott's portfolio of hotel brands worldwide.
  version: '1.0'
servers:
- url: https://devportalprod.marriott.com
tags:
- name: Reservations
  description: Create and manage hotel reservations.
paths:
  /reservations:
    post:
      operationId: createReservation
      summary: Create a reservation
      description: Creates a new hotel reservation at a specified Marriott property.
      tags:
      - Reservations
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                propertyId:
                  type: string
                checkIn:
                  type: string
                  format: date
                checkOut:
                  type: string
                  format: date
                roomType:
                  type: string
                guestName:
                  type: string
                guests:
                  type: integer
      responses:
        '201':
          description: Reservation created successfully
  /reservations/{confirmationNumber}:
    get:
      operationId: getReservation
      summary: Get reservation details
      description: Retrieves details of a specific reservation by confirmation number.
      tags:
      - Reservations
      parameters:
      - name: confirmationNumber
        in: path
        required: true
        description: The reservation confirmation number.
        schema:
          type: string
      responses:
        '200':
          description: Success
components:
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://devportalprod.marriott.com/oauth/token
          scopes:
            properties:read: Read property information
            reservations:write: Create and manage reservations
    apiKey:
      type: apiKey
      in: header
      name: X-API-Key