openapi: 3.1.0
info:
  title: Customer.io App Activities Merge API
  description: The Customer.io App API enables developers to manage workspace resources and send messages programmatically. It provides endpoints for sending transactional messages, triggering broadcasts, managing customers and segments, retrieving campaign and newsletter data, and exporting customer information. The API uses bearer token authentication with an App API key and is designed for operations that go beyond data ingestion, such as retrieving metrics, managing message templates, and automating outbound communications from Customer.io.
  version: 1.0.0
  contact:
    name: Customer.io Support
    url: https://customer.io/contact
  termsOfService: https://customer.io/legal/terms-of-service
servers:
- url: https://api.customer.io/v1
  description: US Production Server
- url: https://api-eu.customer.io/v1
  description: EU Production Server
security:
- bearerAuth: []
tags:
- name: Merge
  description: Merge two customer profiles into a single profile.
paths:
  /merge:
    post:
      operationId: mergeCustomers
      summary: Merge customer profiles
      description: Merges two customer profiles into one. The primary profile is kept and the secondary profile is deleted. Events, attributes, and devices from the secondary profile are merged into the primary profile.
      tags:
      - Merge
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MergeRequest'
      responses:
        '200':
          description: Customers merged successfully.
        '401':
          description: Unauthorized. Invalid Site ID or API key.
components:
  schemas:
    MergeRequest:
      type: object
      required:
      - primary
      - secondary
      description: A request to merge two customer profiles. The primary profile is kept and the secondary profile is deleted.
      properties:
        primary:
          type: object
          required:
          - id
          description: The primary customer profile to keep.
          properties:
            id:
              type: string
              description: The identifier of the primary customer.
        secondary:
          type: object
          required:
          - id
          description: The secondary customer profile to merge and delete.
          properties:
            id:
              type: string
              description: The identifier of the secondary customer.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Bearer token authentication using your App API key. Pass the key in the Authorization header as Bearer {app_api_key}.
externalDocs:
  description: App API Documentation
  url: https://docs.customer.io/integrations/api/app/