HTTP tracking API source

version 2.0
The HTTP Tracking API is used to track events from any website or application. The data is collected by our servers, and then processed and routed to any configured destination.
To manage users, check instead the dedicated User API, and for products, the Product API.

Endpoint URL

The API's collect endpoint is available at the following URL:{siteId}&token={sourceKey}
HTTP method: POST


  • tc_s (required): site id
  • token (required): source key
The source key is displayed in the settings of any source.


Content type

The endpoint requires a Content-Type header set to application/json:
Content-Type: application/json

Source key

An alternative way to provide the required source key to each request is by using an Authorization header:
Authorization: Bearer 7183b9d4-1031-11ee-be56-0242ac120002
Instead of a header, the source key should usually be provided through the token URL parameter of the endpoint.


The properties of the event must be provided in the request body in JSON format.
Find details on best practices in event naming as well as the event method payload in our specifications.
The format of the payload evolved on Nov. 2022. The old format will still be supported during one year. More information here.
Timestamps must be in milliseconds (ms).
consistent_anonymous_id corresponds to a unique identifier for a user, used on the CAX platform to identify a user. It is the equivalent of CAID cookie on a Web source.


The endpoint returns a 200 HTTP response to all API requests. Thus, debugging should be done using the platform interface or our config API (event inspector or event delivery API).
As an exception, a 400 HTTP code is returned in case the request is too large or the payload JSON is invalid.

Max Request Size

There is a maximum of 32KB per API request.

Rate limit

There is no real rate limit above which the system will discard your data. But if you need to import at a rate faster than 500 requests per second, please contact us beforehand.


Example of an API request:
"event_name": "search",
"search_term": "t-shirts",
"user": {
"id": "12345",
"consistent_anonymous_id": "67892"
"email": "[email protected]",
"consent_categories": [
"context": {
"event_id": "202110130000000000",
"page": {
"title": "Search page",
"url": "",
"lang": "en",
"referrer": "",
"viewport": {
"width": 320,
"height": 568
"device": {
"user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36",
"ip": "",
"lang": "fr",
"cookie": "_fbp=123; _fbc=456; _ga=789",
"timezone": "Europe/Paris"
"event_timestamp": "1639044446636"