openapi: 3.1.0
info:
  title: Cvent Event Cloud REST Attendees OAuth API
  version: v2
  description: 'Event Cloud surface of the Cvent Platform REST API — events,

    contacts, registrations, attendees, sessions, exhibitors, surveys,

    Attendee Hub, and webhook resources. Provides programmatic access to events, contacts,

    registrations, attendees, sessions, exhibitors, surveys, webhooks, and

    related Event Cloud resources, authenticated via OAuth 2.0 client

    credentials. Endpoint host varies by region — US accounts use

    api-platform.cvent.com and EMEA accounts use api-platform-eur.cvent.com.


    Best-effort spec derived from Cvent developer portal documentation

    (overview, quickstart, Registration Guide, Managing Events Guide).

    Refer to https://developers.cvent.com/docs/rest-api/overview for the

    authoritative reference and downloadable OpenAPI.

    '
  contact:
    name: Cvent Developer Portal
    url: https://developers.cvent.com
  license:
    name: Proprietary
servers:
- url: https://api-platform.cvent.com
  description: Cvent Platform REST API (US/global)
- url: https://api-platform-eur.cvent.com
  description: Cvent Platform REST API (EMEA)
security:
- OAuth2ClientCredentials: []
tags:
- name: OAuth
  description: OAuth 2.0 token issuance
paths:
  /ea/oauth2/token:
    post:
      tags:
      - OAuth
      summary: Issue OAuth 2.0 access token
      description: 'Exchange Basic-authenticated client credentials for a Bearer access

        token valid for 60 minutes. Use the returned token in the

        `Authorization: Bearer <token>` header on subsequent API calls.

        '
      security:
      - BasicAuth: []
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - grant_type
              properties:
                grant_type:
                  type: string
                  enum:
                  - client_credentials
                client_id:
                  type: string
      responses:
        '200':
          description: Access token issued
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccessToken'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  responses:
    Unauthorized:
      description: Missing or invalid OAuth credentials
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    AccessToken:
      type: object
      properties:
        access_token:
          type: string
        token_type:
          type: string
          example: Bearer
        expires_in:
          type: integer
          example: 3599
        scope:
          type: string
    Error:
      type: object
      properties:
        type:
          type: string
        title:
          type: string
        status:
          type: integer
        detail:
          type: string
  securitySchemes:
    OAuth2ClientCredentials:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://api-platform.cvent.com/ea/oauth2/token
          scopes:
            event/events:read: Read events
            event/events:write: Write events
            event/contacts:read: Read contacts
            event/contacts:write: Write contacts
            event/attendees:read: Read attendees
            event/attendees:write: Write attendees
            event/sessions:read: Read sessions
            event/registration-types:read: Read registration types
            event/custom-fields:read: Read custom fields
    BasicAuth:
      type: http
      scheme: basic
      description: Client ID / client secret Basic auth used only for the /ea/oauth2/token call.
externalDocs:
  description: Cvent Platform REST API documentation
  url: https://developers.cvent.com/docs/rest-api/overview