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Customer.io Track Events API

Use customer events to trigger campaigns or add users to segments. You can attribute events directly to customers or send anonymous events and associate them with users later when you identify them.

Customer.io Track Events API is one of 42 APIs that Customer.io publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Track Events. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 4 operations across 4 paths, and defines 8 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against 2 base URLs: https://track.customer.io, https://track-eu.customer.io.

4 operations 4 paths 8 schemas 4 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://track.customer.io
Authentication
HTTP Basic
Resource Areas
1

Authentication & Security 1

Customer.io Track Events API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (Tracking-API-Key).

  • Tracking-API-Key — The Track API uses a basic authentication scheme. Your credentials are your Site ID and your API key, Base-64 encoded in the format siteid:apikey. You can find…

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 POST. Each is listed below with its method, path, parameters, and response codes.

Track Events 4

Use customer events to trigger campaigns or add users to segments. You can attribute events directly to customers or send anonymous events and associate them with users later when…

POST
/api/v1/customers/{identifier}/events
Track a customer event
track 1 param body → 200400401
POST
/api/v1/events
Track an anonymous event
trackAnonymous body → 200400401
POST
/api/v1/metrics
Report metrics
metrics body → 200
POST
/api/v1/push/eventsdeprecated
Report push metrics
pushMetrics body → 200

Schemas 8

The contract defines 8 schemas that model the data the API accepts and returns. The most detailed is track-metrics (2 properties). Each schema is shown below with its type and property counts.

eventsRequest
reply_to_settable
string
The address that receives replies for the message, if applicable.
recipient
string
The recipient address for an action.
dedupe_id
string
A [ULID](https://github.com/ulid/spec) we use to deduplicate events. If an event repeats a value we've already received, we ignore the duplicate. Our Python an…
from_address
string
The address you want to trigger messages from, overriding the from field in emails triggered by the event.
track-metrics
object
The base properties shared across multiple metric types.
2 properties 1 required
anonymousEventsRequest
An event attributed to an unknown person. If you provide an anonymousid with the event, you can associate the event with a person later (using the anonymous ID…
anonymous_id
string
An identifier for an anonymous event, like a cookie. If set as an attribute on a person, any events bearing the same anonymous value are associated with this p…

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

customer-io-track-events-api-openapi.yml Raw ↑

Other APIs Customer.io publishes across the network.

Customer.io Track API
Customer.io Activities API
Customer.io Alias API
Customer.io Batch API
Customer.io Broadcasts API
Customer.io Campaigns API
Customer.io Collections API
Customer.io Customers API
Customer.io Exports API
Customer.io Group API
Customer.io Identify API
Customer.io Messages API
Where this information came from

This is an independent, third-party profile of Customer.io Track Events API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

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