cancel_after_time_interval | Time | The time after which the search request will be canceled. Request-level parameter takes precedence over cancel_after_time_interval [cluster setting]({{site.url}}{{site.baseurl}}/opensearch/rest-api/cluster-settings). Default is -1.
css_minimize_roundtrips | Boolean | Whether to minimize roundtrips between a node and remote clusters. Default is true.
default_operator | String | Indicates whether the default operator for a string query should be AND or OR. Default is OR.
df | String | The default field in case a field prefix is not provided in the query string.
docvalue_fields | String | The fields that OpenSearch should return using their docvalue forms.
expand_wildcards | String | Specifies the type of index that wildcard expressions can match. Supports comma-separated values. Valid values are all (match any index), open (match open, non-hidden indexes), closed (match closed, non-hidden indexes), hidden (match hidden indexes), and none (deny wildcard expressions). Default is open.
explain | Boolean | Whether to return details about how OpenSearch computed the document's score. Default is false.
from | Integer | The starting index to search from. Default is 0.
ignore_throttled | Boolean | Whether to ignore concrete, expanded, or indexes with aliases if indexes are frozen. Default is true.
ignore_unavailable | Boolean | Specifies whether to include missing or closed indexes in the response. Default is false.
lenient | Boolean | Specifies whether OpenSearch should accept requests if queries have format errors (for example, querying a text field for an integer). Default is false.
pre_filter_shard_size | Integer | A prefilter size threshold that triggers a prefilter operation if the request exceeds the threshold. Default is 128 shards.
preference | String | Specifies which shard or node OpenSearch should perform the count operation on.
q | String | Lucene query string’s query.
request_cache | Boolean | Specifies whether OpenSearch should use the request cache. Default is whether it’s enabled in the index’s settings.
rest_total_hits_as_int | Boolean | Whether to return `hits.total` as an integer. Returns an object otherwise. Default is false.
routing | String | Value used to route the update by query operation to a specific shard.
scroll | Time | How long to keep the search context open.
search_type | String | Whether OpenSearch should use global term and document frequencies when calculating revelance scores. Valid choices are `query_then_fetch` and `dfs_query_then_fetch`. `query_then_fetch` scores documents using local term and document frequencies for the shard. It’s usually faster but less accurate. `dfs_query_then_fetch` scores documents using global term and document frequencies across all shards. It’s usually slower but more accurate. Default is `query_then_fetch`.
seq_no_primary_term | Boolean | Whether to return sequence number and primary term of the last operation of each document hit.
size | Integer | How many results to include in the response.
sort | List | A comma-separated list of <field> : <direction> pairs to sort by.
_source | String | Whether to include the `_source` field in the response.
_source_excludes | List | A comma-separated list of source fields to exclude from the response.
_source_includes | List | A comma-separated list of source fields to include in the response.
stats | String | Value to associate with the request for additional logging.
stored_fields | Boolean | Whether the get operation should retrieve fields stored in the index. Default is false.
suggest_field | String | Fields OpenSearch can use to look for similar terms.
suggest_mode | String | The mode to use when searching. Available options are `always` (use suggestions based on the provided terms), `popular` (use suggestions that have more occurrences), and `missing` (use suggestions for terms not in the index).
suggest_size | Integer | How many suggestions to return.
suggest_text | String | The source that suggestions should be based off of.
terminate_after | Integer | The maximum number of documents OpenSearch should process before terminating the request. Default is 0.
track_scores | Boolean | Whether to return document scores. Default is false.
track_total_hits | Boolean or Integer | Whether to return how many documents matched the query.
typed_keys | Boolean | Whether returned aggregations and suggested terms should include their types in the response. Default is true.
version | Boolean | Whether to include the document version as a match.
## Request body
All fields are optional.
Field | Type | Description
:--- | :--- | :---
docvalue_fields | Array of objects | The fields that OpenSearch should return using their docvalue forms. Specify a format to return results in a certain format, such as date and time.
fields | Array | The fields to search for in the request. Specify a format to return results in a certain format, such as date and time.
explain | String | Whether to return details about how OpenSearch computed the document's score. Default is false.
from | Integer | The starting index to search from. Default is 0.
indices_boost | Array of objects | Scores used to boost specified indices' scores. Specify in the format of <index> : <boost-multiplier>
min_score | Integer | Specify a score threshold to return only documents above the threshold.
query | Object | The [DSL query]({{site.url}}{{site.baseurl}}/opensearch/query-dsl/index) to use in the request.
seq_no_primary_term | Boolean | Whether to return sequence number and primary term of the last operation of each document hit.
size | Integer | How many results to return. Default is 10.
_source | | Whether to include the `_source` field in the response.
stats | String | Value to associate with the request for additional logging.
terminate_after | Integer | The maximum number of documents OpenSearch should process before terminating the request. Default is 0.
timeout | Time | How long to wait for a response. Default is no timeout.
version | Boolean | Whether to include the document version in the response.
