Note: For projects using [Analytics Integrations](../../../progressive-web/latest/analytics/analytics-integrations-overview/) or its predecessor, the [Analytics Manager](../../../progressive-web/latest/analytics/legacy-analytics-manager/), this is handled by the Engagement Engine Connector.
Clients can send events to the Engagement Engine by embedded a tracking pixel with valid parameters representing required fields.
The tracking pixel expects the following parameters:
|slug||String||Unique project slug|
|channel||String||Which channel this data is arriving on|
|dimensions||String||URL-encoded JSON payload of key/values metadata|
|timestamp_local||String||The unix/epoch timestamp in milliseconds of the client when this request was sent|
|data||String||URL-encoded JSON payload containing
Calls to the tracking pixel are made with a GET request, similar to:
For more details, please see the Tracking Pixel reference documentation