This is the unified documentation for Retail API. This includes Recommendations AI, Retail Search, and the unified Retail console (which is applicable to both Recommendations AI and Retail Search users). To use the new console or Retail Search while they are in the restricted GA phase, submit a form here to contact Cloud sales. If you are using the v1beta version of Recommendations AI, migrate to the GA version: Migrating to the Retail API from beta.

To see documentation for only Recommendations AI and the Recommendations AI-only console, go to the How-to guides for Recommendations AI and the API reference documentation for Recommendations AI.

Managing user events

This page describes how to view and delete user events. For information about recording user events as they happen, see Recording real-time user events. To import user event data from past events, see Importing historical user events.

Viewing aggregated user event information

You can view the number of recorded user events for your project in the Event tab on the Retail console Data page. Metrics will appear about 24 hours after you first upload events to Retail.

Retail User Event Stats

Removing user events

Generally, you should leave user events in place after they have been recorded. Purging events is not recommended.

An event purge can take up to several days to complete. If you plan to reset user events entirely, consider creating a new project instead.

If you have user events that were not recorded properly and need to remove them, you can do so using the userEvents.purge method.

Specify the events you want to remove by using a filter string. This supports selectively deleting user events by filtering on the eventTime, eventType, visitorID, and userID fields.

Because you cannot undo the delete, test your filter string by conducting a dry run before deleting user events. The force field is set to false by default; this setting will return the number of events to be deleted without actually deleting them. When you are ready to actually delete the user events, set the force field to true.


This example filters for a time range, which must use the Zulu Time date format. The force field is set to false.

curl -X POST \
  -H "Authorization: Bearer "$(gcloud auth application-default print-access-token)"" \
  -H "Content-Type: application/json; charset=utf-8" \
  --data '{
    "filter":"eventTime > \"2019-12-23T18:25:43.511Z\" eventTime < \"2019-12-23T18:30:43.511Z\"",
  }' \

You should receive a response object that looks something like this, where purge-user-events-54321 is the operation ID:

  "name": "projects/[PROJECT_ID]/locations/global/catalogs/default_catalog/operations/purge-user-events-54321"

This example requests the operation status:

curl -H "Authorization: Bearer $(gcloud auth application-default print-access-token)" \

Operation status example:

  "name": "projects/[PROJECT_ID]/locations/global/catalogs/default_catalog/operations/OPERATION_ID",
  "done": true,
  "response": {
    "@type": "",
    "purgedEventsCount": "1"

Setting the force field to true forces the delete to occur.

curl -X POST \
  -H "Authorization: Bearer "$(gcloud auth application-default print-access-token)"" \
  -H "Content-Type: application/json; charset=utf-8" \
  --data '{
    "filter":"eventTime > \"2019-12-23T18:25:43.511Z\" eventTime < \"2019-12-23T18:30:43.511Z\"",
  }' \


public static String purgeUserEvents(
    String filter)
    throws IOException, InterruptedException, ExecutionException {
  UserEventServiceClient userEventsClient = getUserEventServiceClient();

  PurgeUserEventsRequest request = PurgeUserEventsRequest.newBuilder()

  String operationName = userEventsClient

  userEventsClient.awaitTermination(2, TimeUnit.SECONDS);

  return operationName;

Using the user event filter

You can filter user events to be deleted.

The filter is a string that contains one or more of the following restrictions:

  • eventTime

    Provides a timestamp to bound the events to be deleted. This filter can be specified once or twice, with a greater-than (>) or less-than (<) symbol. The bounded time must be a single, contiguous block.

  • eventType

    Restrict the events to be deleted to a single event type.

  • visitorID

    Restrict the events to be deleted to a single visitor ID.

  • userID

    Restrict the events to be deleted to a single user ID.

Only user events that satisfy all of the restrictions are deleted.

To delete all user events of type add-to-cart that were logged on or after February 1, 2019, you would provide the following filter string:

eventTime > "2019-02-01T00:00:00Z" eventType = add-to-cart