Customer.io

Customer.io Track Customers API

Add, modify, suppress, or unsuppress people (referred to as "customers" in our APIs). You can also use these endpoints to set attributes on people.

GitHub OpenAPI
Business capability
Customer Data Management BC-420.10

Operations 8

PUT /api/v1/customers/{identifier} Add or update a customer #
DELETE /api/v1/customers/{identifier} Delete a customer #
PUT /api/v1/customers/{identifier}/devices Add or update a customer device #
DELETE /api/v1/customers/{identifier}/devices/{device_id} Delete a customer device #
POST /api/v1/customers/{identifier}/suppress Suppress a customer profile #
POST /api/v1/customers/{identifier}/unsuppress Unsuppress a customer profile #
POST /unsubscribe/{delivery_id} Custom unsubscribe handling #
POST /api/v1/merge_customers Merge duplicate people #

Documentation

📖
Documentation
https://docs.customer.io/integrations/api/app/
📖
Documentation
https://docs.customer.io/integrations/data-in/connections/http-api/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/openapi/customer-io-track-customers-api-openapi.yml

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OpenAPI Specification

customer-io-track-customers-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  version: 1.0.0
  title: Customer.io Track Track Customers API
  description: '# Overview


    Our Track API provides ways to send real-time customer data to your Customer.io workspace including customer identification and event tracking.'
servers:
- url: https://track.customer.io
  description: The base URL for the Track API. Track endpoints use basic authentication with your Site ID as the user name and your secret key as the password.
- url: https://track-eu.customer.io
  description: The base URL for the Track API (EU region). Track endpoints use basic authentication with your Site ID as the user name and your secret key as the password.
tags:


# --- truncated at 32 KB (40 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/openapi/customer-io-track-customers-api-openapi.yml