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The tagFilters parameter lets you filter records based on values in the _tags attribute. It uses the same syntax and structure as facetFilters. Unlike regular facets, _tags is always available for filtering—you don’t need to include it in attributesForFaceting. To use this parameter, your records must contain a top-level _tags attribute. This parameter is only for filtering—it doesn’t return facet counts or support faceting behavior.
For advanced use cases or filters on arbitrary attributes, use the filters parameter instead.

​
Usage notes

  • Tag names are case-sensitive.
  • Multiple tags in an array are combined with AND.
    Use nested arrays for OR conditions.
  • Prefix a tag with - to exclude it.
    Example: ["tag1", "-tag2"] means tag1 AND NOT tag2.
For more information, see facetFilters.

​
Example

Current API clients

var response = await client.SearchSingleIndexAsync<Hit>(
  "INDEX_NAME",
  new SearchParams(
    new SearchParamsObject
    {
      Query = "query",
      TagFilters = new TagFilters(
        new List<TagFilters>
        {
          new TagFilters("SciFi"),
          new TagFilters(
            new List<TagFilters> { new TagFilters("Book"), new TagFilters("Movie") }
          ),
        }
      ),
    }
  )
);

index.Search(new Query("query")
{
  TagFilters = new List>
  {
    new List { "Book", "Movie" },
    new List { "SciFi" }
  }
});
Last modified on March 23, 2026