This listing is posted by the APIs.io catalog. APIs.io does not own or sell this API; access comes from the provider, Customer.io.
The Customer.io Track API lets developers send behavioral data and customer profile information into Customer.io. It has endpoints for identifying customers, tracking events, managing devices for push notifications, and sending anonymous events. It uses basic authentication with a Site ID and API key, and accepts JSON request bodies. The base URL is https://track.customer.io.
Who it suits: teams that run marketing automation or behavior-triggered messaging and want to feed customer and event data into Customer.io. Customer.io is a customer engagement platform that combines a customer data platform, marketing automation, and delivery of email, push, SMS, and in-app messages.
Published for it: Documentation, OpenAPI, JSONSchema, and APIsJSON.
Catalog ratings: the provider has a Kin Score of 84 (exemplar band) and an Agent Readiness score of 71.8 (agent-ready band), scored 2026-10-17.
Access: the provider lists it as paid, with self-serve signup.
Pricing: set by the provider.
Condition: a live hosted API listed in the APIs.io catalog.
Catalog listing: https://apis.io/apis/customer-io/track-api/ Provider: https://customer.io