A facet specification to perform faceted search.

JSON representation
  "facetKey": {
    object (FacetKey)
  "limit": integer,
  "excludedFilterKeys": [
  "enableDynamicPosition": boolean

object (FacetKey)

Required. The facet key specification.



Maximum of facet values that should be returned for this facet. If unspecified, defaults to 50. The maximum allowed value is 300. Values above 300 will be coerced to 300.

If this field is negative, an INVALID_ARGUMENT is returned.



List of keys to exclude when faceting.

By default, FacetKey.key is not excluded from the filter unless it is listed in this field.

Listing a facet key in this field allows its values to appear as facet results, even when they are filtered out of search results. Using this field does not affect what search results are returned.

For example, suppose there are 100 products with the color facet "Red" and 200 products with the color facet "Blue". A query containing the filter "colorFamilies:ANY("Red")" and having "colorFamilies" as FacetKey.key would by default return only "Red" products in the search results, and also return "Red" with count 100 as the only color facet. Although there are also blue products available, "Blue" would not be shown as an available facet value.

If "colorFamilies" is listed in "excludedFilterKeys", then the query returns the facet values "Red" with count 100 and "Blue" with count 200, because the "colorFamilies" key is now excluded from the filter. Because this field doesn't affect search results, the search results are still correctly filtered to return only "Red" products.

A maximum of 100 values are allowed. Otherwise, an INVALID_ARGUMENT error is returned.



Enables dynamic position for this facet. If set to true, the position of this facet among all facets in the response is determined by Google Retail Search. It is ordered together with dynamic facets if dynamic facets is enabled. If set to false, the position of this facet in the response is the same as in the request, and it is ranked before the facets with dynamic position enable and all dynamic facets.

For example, you may always want to have rating facet returned in the response, but it's not necessarily to always display the rating facet at the top. In that case, you can set enableDynamicPosition to true so that the position of rating facet in response is determined by Google Retail Search.

Another example, assuming you have the following facets in the request:

  • "rating", enableDynamicPosition = true

  • "price", enableDynamicPosition = false

  • "brands", enableDynamicPosition = false

And also you have a dynamic facets enable, which generates a facet "gender". Then, the final order of the facets in the response can be ("price", "brands", "rating", "gender") or ("price", "brands", "gender", "rating") depends on how Google Retail Search orders "gender" and "rating" facets. However, notice that "price" and "brands" are always ranked at first and second position because their enableDynamicPosition values are false.


Specifies how a facet is computed.

JSON representation
  "key": string,
  "intervals": [
      object (Interval)
  "restrictedValues": [
  "prefixes": [
  "contains": [
  "caseInsensitive": boolean,
  "orderBy": string,
  "query": string,
  "returnMinMax": boolean


Required. Supported textual and numerical facet keys in Product object, over which the facet values are computed. Facet key is case-sensitive.

Allowed facet keys when FacetKey.query is not specified:

  • textual_field =

    • "brands"
    • "categories"
    • "genders"
    • "ageGroups"
    • "availability"
    • "colorFamilies"
    • "colors"
    • "sizes"
    • "materials"
    • "patterns"
    • "conditions"
    • "attributes.key"
    • "pickupInStore"
    • "shipToStore"
    • "sameDayDelivery"
    • "nextDayDelivery"
    • "customFulfillment1"
    • "customFulfillment2"
    • "customFulfillment3"
    • "customFulfillment4"
    • "customFulfillment5"
    • "inventory(placeId,attributes.key)"
  • numerical_field =

    • "price"
    • "discount"
    • "rating"
    • "ratingCount"
    • "attributes.key"
    • "inventory(placeId,price)"
    • "inventory(placeId,originalPrice)"
    • "inventory(placeId,attributes.key)"

object (Interval)

Set only if values should be bucketized into intervals. Must be set for facets with numerical values. Must not be set for facet with text values. Maximum number of intervals is 40.

For all numerical facet keys that appear in the list of products from the catalog, the percentiles 0, 10, 30, 50, 70, 90, and 100 are computed from their distribution weekly. If the model assigns a high score to a numerical facet key and its intervals are not specified in the search request, these percentiles become the bounds for its intervals and are returned in the response. If the facet key intervals are specified in the request, then the specified intervals are returned instead.



Only get facet for the given restricted values. For example, when using "pickupInStore" as key and set restricted values to ["store123", "store456"], only facets for "store123" and "store456" are returned. Only supported on predefined textual fields, custom textual attributes and fulfillments. Maximum is 20.

Must be set for the fulfillment facet keys:

  • pickupInStore

  • shipToStore

  • sameDayDelivery

  • nextDayDelivery

  • customFulfillment1

  • customFulfillment2

  • customFulfillment3

  • customFulfillment4

  • customFulfillment5



Only get facet values that start with the given string prefix. For example, suppose "categories" has three values "Women > Shoe", "Women > Dress" and "Men > Shoe". If set "prefixes" to "Women", the "categories" facet gives only "Women > Shoe" and "Women > Dress". Only supported on textual fields. Maximum is 10.



Only get facet values that contains the given strings. For example, suppose "categories" has three values "Women > Shoe", "Women > Dress" and "Men > Shoe". If set "contains" to "Shoe", the "categories" facet gives only "Women > Shoe" and "Men > Shoe". Only supported on textual fields. Maximum is 10.



True to make facet keys case insensitive when getting faceting values with prefixes or contains; false otherwise.



The order in which SearchResponse.Facet.values are returned.

Allowed values are:

If not set, textual values are sorted in natural order; numerical intervals are sorted in the order given by FacetSpec.FacetKey.intervals; FulfillmentInfo.place_ids are sorted in the order given by FacetSpec.FacetKey.restricted_values.



The query that is used to compute facet for the given facet key. When provided, it overrides the default behavior of facet computation. The query syntax is the same as a filter expression. See SearchRequest.filter for detail syntax and limitations. Notice that there is no limitation on FacetKey.key when query is specified.

In the response, SearchResponse.Facet.values.value is always "1" and SearchResponse.Facet.values.count is the number of results that match the query.

For example, you can set a customized facet for "shipToStore", where FacetKey.key is "customizedShipToStore", and FacetKey.query is "availability: ANY("IN_STOCK") AND shipToStore: ANY("123")". Then the facet counts the products that are both in stock and ship to store "123".



Returns the min and max value for each numerical facet intervals. Ignored for textual facets.