---
type: api
title: Run multiple Fleet searches
description: **All methods and paths for this operation:**
url: https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/operation/operation-fleet-msearch
resource: https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/operation/operation-fleet-msearch
products:
  - Elasticsearch
---

# Run multiple Fleet searches


Availability: 7.16+

## Paths

- `POST` (also `GET`) `/{index}/_fleet/_fleet_msearch`
- `POST` (also `GET`) `/_fleet/_fleet_msearch`

- [Api key auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/authentication#apikeyauth)
- [Basic auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/authentication#basicauth)
- [Bearer auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/authentication#bearerauth)

#### Path Parameters

- `index` (union IndexName | IndexAlias) — optional, leave it out to use `/_fleet/_fleet_msearch`
  A single target to search. If the target is an index alias, it must resolve to a single index.

## Description

Run several Fleet searches with a single API request.
The API follows the same structure as the multi search API.
However, similar to the Fleet search API, it supports the `wait_for_checkpoints` parameter.

## Required authorization

* Index privileges: `read`

## Query String Parameters

- `allow_no_indices` (boolean)
  A setting that does two separate checks on the index expression.
If `false`, the request returns an error (1) if any wildcard expression
(including `_all` and `*`) resolves to zero matching indices or (2) if the
complete set of resolved indices, aliases or data streams is empty after all
expressions are evaluated. If `true`, index expressions that resolve to no
indices are allowed and the request returns an empty result.
- `ccs_minimize_roundtrips` (boolean · default: true)
  If true, network roundtrips between the coordinating node and remote clusters are minimized for cross-cluster search requests.
- `expand_wildcards` (union ExpandWildcards)
  Type of index that wildcard expressions can match. If the request can target data streams, this argument determines whether wildcard expressions match hidden data streams.

Supported values include:
  - `all`: Match any data stream or index, including hidden ones.
  - `open`: Match open, non-hidden indices. Also matches any non-hidden data stream.
  - `closed`: Match closed, non-hidden indices. Also matches any non-hidden data stream. Data streams cannot be closed.
  - `hidden`: Match hidden data streams and hidden indices. Must be combined with `open`, `closed`, or `both`.
  - `none`: Wildcard expressions are not accepted.
  Values: `all`, `open`, `closed`, `hidden`, `none`
- `ignore_throttled` (boolean · default: false)
  If true, concrete, expanded or aliased indices are ignored when frozen.
- `ignore_unavailable` (boolean · default: false)
  If `false`, the request returns an error if it targets a concrete (non-wildcarded)
index, alias, or data stream that is missing, closed, or otherwise unavailable.
If `true`, unavailable concrete targets are silently ignored.
- `max_concurrent_searches` (number)
  Maximum number of concurrent searches the multi search API can execute.
- `max_concurrent_shard_requests` (number · default: 5)
  Maximum number of concurrent shard requests that each sub-search request executes per node.
- `pre_filter_shard_size` (number)
  Defines a threshold that enforces a pre-filter roundtrip to prefilter search shards based on query rewriting if the number of shards the search request expands to exceeds the threshold. This filter roundtrip can limit the number of shards significantly if for instance a shard can not match any documents based on its rewrite method i.e., if date filters are mandatory to match but the shard bounds and the query are disjoint.
- `search_type` (enum SearchType)
  Indicates whether global term and document frequencies should be used when scoring returned documents.

Supported values include:
  - `query_then_fetch`: Documents are scored using local term and document frequencies for the shard. This is usually faster but less accurate.
  - `dfs_query_then_fetch`: Documents are scored using global term and document frequencies across all shards. This is usually slower but more accurate.
  Values: `query_then_fetch`, `dfs_query_then_fetch`
- `rest_total_hits_as_int` (boolean · default: false)
  If true, hits.total are returned as an integer in the response. Defaults to false, which returns an object.
- `typed_keys` (boolean)
  Specifies whether aggregation and suggester names should be prefixed by their respective types in the response.
- `wait_for_checkpoints` ([] number · default: [])
  A comma separated list of checkpoints. When configured, the search API will only be executed on a shard
after the relevant checkpoint has become visible for search. Defaults to an empty list which will cause
Elasticsearch to immediately execute the search.
- `allow_partial_search_results` (boolean)
  If true, returns partial results if there are shard request timeouts or shard failures.
If false, returns an error with no partial results.
Defaults to the configured cluster setting `search.default_allow_partial_results`, which is true by default.

## Request Body

`application/json`

An array; each item is one of:
- **MultisearchHeader**
  Contains parameters used to limit or change the subsequent search body request.
  - `allow_no_indices` (boolean) — optional
    A setting that does two separate checks on the index expression.
If `false`, the request returns an error (1) if any wildcard expression
(including `_all` and `*`) resolves to zero matching indices or (2) if the
complete set of resolved indices, aliases or data streams is empty after all
expressions are evaluated. If `true`, index expressions that resolve to no
indices are allowed and the request returns an empty result.
  - `expand_wildcards` (string ExpandWildcards) — optional
    

Supported values include:
  - `all`: Match any data stream or index, including hidden ones.
  - `open`: Match open, non-hidden indices. Also matches any non-hidden data stream.
  - `closed`: Match closed, non-hidden indices. Also matches any non-hidden data stream. Data streams cannot be closed.
  - `hidden`: Match hidden data streams and hidden indices. Must be combined with `open`, `closed`, or `both`.
  - `none`: Wildcard expressions are not accepted.
    Values: `all`, `open`, `closed`, `hidden`, `none`
  - `ignore_unavailable` (boolean) — optional
    If `false`, the request returns an error if it targets a concrete (non-wildcarded)
index, alias, or data stream that is missing, closed, or otherwise unavailable.
If `true`, unavailable concrete targets are silently ignored.
  - `index` (string Indices) — optional
  - `preference` (string) — optional
  - `project_routing` (string) — optional
  - `request_cache` (boolean) — optional
  - `routing` (string Routing) — optional
    A custom value used to route operations to a specific shard.
Not allowed when `index.slice.enabled` is `true` for the target index; use `_slice` instead.
  - `search_type` (enum SearchType) — optional
    

Supported values include:
  - `query_then_fetch`: Documents are scored using local term and document frequencies for the shard. This is usually faster but less accurate.
  - `dfs_query_then_fetch`: Documents are scored using global term and document frequencies across all shards. This is usually slower but more accurate.
    Values: `query_then_fetch`, `dfs_query_then_fetch`
  - `ccs_minimize_roundtrips` (boolean) — optional
  - `allow_partial_search_results` (boolean) — optional
  - `ignore_throttled` (boolean) — optional
- **SearchRequestBody**
  - `aggregations` (map string to {} AggregationContainer) — optional
    Defines the aggregations that are run as part of the search request.
    See [AggregationContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-aggregations-aggregationcontainer)
  - `collapse` ({} FieldCollapse) — optional
    Collapses search results the values of the specified field.
    - `field` (string Field) — required
      The field to collapse the result set on
    - `inner_hits` (union oneOf) — optional
      The number of inner hits and their sort order
      `InnerHits` or `InnerHits[]`
      - `name` (string Name) — optional
        The name for the particular inner hit definition in the response.
Useful when a search request contains multiple inner hits.
      - `size` (number · default: 3) — optional
        The maximum number of hits to return per `inner_hits`.
      - `from` (number · default: 0) — optional
        Inner hit starting document offset.
      - `collapse` ({} FieldCollapse) — optional — recursive
        Same fields as `collapse` in `SearchRequestBody`
      - `docvalue_fields` ([] FieldAndFormat) — optional
        - `field` (string Field) — required
          A wildcard pattern. The request returns values for field names matching this pattern.
        - `format` (string) — optional
          The format in which the values are returned.
        - `include_unmapped` (boolean) — optional
      - `explain` (boolean) — optional
      - `highlight` ({} Highlight) — optional
        - `type` (HighlighterType) — optional
          

Supported values include:
  - `plain`: The `plain` highlighter uses the standard Lucene highlighter
  - `fvh`: The fvh highlighter uses the Lucene Fast Vector highlighter.
  - `unified`: The unified highlighter uses the Lucene Unified Highlighter.
          Values: `plain`, `fvh`, `unified`
        - `boundary_chars` (string · default: .,!? \t\n) — optional
          A string that contains each boundary character.
        - `boundary_max_scan` (number · default: 20) — optional
          How far to scan for boundary characters.
        - `boundary_scanner` (enum BoundaryScanner) — optional
          Specifies how to break the highlighted fragments: chars, sentence, or word.
Only valid for the unified and fvh highlighters.
Defaults to `sentence` for the `unified` highlighter. Defaults to `chars` for the `fvh` highlighter.

Supported values include:
  - `chars`: Use the characters specified by `boundary_chars` as highlighting boundaries.
The `boundary_max_scan` setting controls how far to scan for boundary characters.
Only valid for the `fvh` highlighter.
  - `sentence`: Break highlighted fragments at the next sentence boundary, as determined by Java’s `BreakIterator`.
You can specify the locale to use with `boundary_scanner_locale`.
When used with the `unified` highlighter, the `sentence` scanner splits sentences bigger than `fragment_size` at the first word boundary next to fragment_size.
You can set `fragment_size` to `0` to never split any sentence.
  - `word`: Break highlighted fragments at the next word boundary, as determined by Java’s `BreakIterator`.
You can specify the locale to use with `boundary_scanner_locale`.
          Values: `chars`, `sentence`, `word`
        - `boundary_scanner_locale` (string · default: Locale.ROOT) — optional
          Controls which locale is used to search for sentence and word boundaries.
This parameter takes a form of a language tag, for example: `"en-US"`, `"fr-FR"`, `"ja-JP"`.
        - `force_source` (boolean) — optional — deprecated
        - `fragmenter` (enum HighlighterFragmenter · default: span) — optional
          Specifies how text should be broken up in highlight snippets: `simple` or `span`.
Only valid for the `plain` highlighter.
          Values: `simple`, `span`
        - `fragment_size` (number · default: 100) — optional
          The size of the highlighted fragment in characters.
        - `highlight_filter` (boolean) — optional
        - `highlight_query` ({} QueryContainer) — optional
          Highlight matches for a query other than the search query.
This is especially useful if you use a rescore query because those are not taken into account by highlighting by default.
          See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        - `max_fragment_length` (number) — optional
        - `max_analyzed_offset` (number) — optional
          If set to a non-negative value, highlighting stops at this defined maximum limit.
The rest of the text is not processed, thus not highlighted and no error is returned
The `max_analyzed_offset` query setting does not override the `index.highlight.max_analyzed_offset` setting, which prevails when it’s set to lower value than the query setting.
        - `no_match_size` (number · default: 0) — optional
          The amount of text you want to return from the beginning of the field if there are no matching fragments to highlight.
        - `number_of_fragments` (number · default: 5) — optional
          The maximum number of fragments to return.
If the number of fragments is set to `0`, no fragments are returned.
Instead, the entire field contents are highlighted and returned.
This can be handy when you need to highlight short texts such as a title or address, but fragmentation is not required.
If `number_of_fragments` is `0`, `fragment_size` is ignored.
        - `options` (map string to object) — optional
        - `order` (enum HighlighterOrder · default: none) — optional
          Sorts highlighted fragments by score when set to `score`.
By default, fragments will be output in the order they appear in the field (order: `none`).
Setting this option to `score` will output the most relevant fragments first.
Each highlighter applies its own logic to compute relevancy scores.
          Values: `score`
        - `phrase_limit` (number · default: 256) — optional
          Controls the number of matching phrases in a document that are considered.
Prevents the `fvh` highlighter from analyzing too many phrases and consuming too much memory.
When using `matched_fields`, `phrase_limit` phrases per matched field are considered. Raising the limit increases query time and consumes more memory.
Only supported by the `fvh` highlighter.
        - `post_tags` ([] string) — optional
          Use in conjunction with `pre_tags` to define the HTML tags to use for the highlighted text.
By default, highlighted text is wrapped in `<em>` and `</em>` tags.
        - `pre_tags` ([] string) — optional
          Use in conjunction with `post_tags` to define the HTML tags to use for the highlighted text.
By default, highlighted text is wrapped in `<em>` and `</em>` tags.
        - `require_field_match` (boolean · default: true) — optional
          By default, only fields that contains a query match are highlighted.
Set to `false` to highlight all fields.
        - `tags_schema` (enum HighlighterTagsSchema) — optional
          Set to `styled` to use the built-in tag schema.
          Values: `styled`
        - `encoder` (enum HighlighterEncoder) — optional
          Values: `default`, `html`
        - `fields` (union oneOf) — required
          `map string to HighlightField` or `[] map string to HighlightField`
      - `ignore_unmapped` (boolean) — optional
      - `script_fields` (map string to ScriptField) — optional
        Map values ({} ScriptField)
        - `script` (string Script) — required
        - `ignore_failure` (boolean) — optional
      - `seq_no_primary_term` (boolean) — optional
      - `field` ([] string Field) — optional
      - `fields` ([] FieldAndFormat) — optional
        - `field` (string Field) — required
          A wildcard pattern. The request returns values for field names matching this pattern.
        - `format` (string) — optional
          The format in which the values are returned.
        - `include_unmapped` (boolean) — optional
      - `sort` (Sort) — optional
        How the inner hits should be sorted per `inner_hits`.
By default, inner hits are sorted by score.
      - `_source` (SourceConfig) — optional
      - `stored_fields` (string Fields) — optional
      - `track_scores` (boolean · default: false) — optional
      - `version` (boolean) — optional
    - `max_concurrent_group_searches` (number) — optional
      The number of concurrent requests allowed to retrieve the inner_hits per group
    - `collapse` ({} FieldCollapse) — optional — recursive
      Same fields as `collapse` in `SearchRequestBody`
  - `explain` (boolean · default: false) — optional
    If `true`, the request returns detailed information about score computation as part of a hit.
  - `ext` (map string to object) — optional
    Configuration of search extensions defined by Elasticsearch plugins.
  - `from` (number · default: 0) — optional
    The starting document offset, which must be non-negative.
By default, you cannot page through more than 10,000 hits using the `from` and `size` parameters.
To page through more hits, use the `search_after` parameter.
  - `highlight` ({} Highlight) — optional
    Specifies the highlighter to use for retrieving highlighted snippets from one or more fields in your search results.
    Same fields as `highlight` in `inner_hits`
  - `track_total_hits` (boolean | number · default: 10000) — optional
    Number of hits matching the query to count accurately.
If `true`, the exact number of hits is returned at the cost of some performance.
If `false`, the  response does not include the total number of hits matching the query.
  - `indices_boost` ([] string to number) — optional
    Boost the `_score` of documents from specified indices.
The boost value is the factor by which scores are multiplied.
A boost value greater than `1.0` increases the score.
A boost value between `0` and `1.0` decreases the score.
  - `docvalue_fields` ([] FieldAndFormat) — optional
    An array of wildcard (`*`) field patterns.
The request returns doc values for field names matching these patterns in the `hits.fields` property of the response.
    - `field` (string Field) — required
      A wildcard pattern. The request returns values for field names matching this pattern.
    - `format` (string) — optional
      The format in which the values are returned.
    - `include_unmapped` (boolean) — optional
  - `knn` (union oneOf) — optional
    The approximate kNN search to run.
    `KnnSearch` or `KnnSearch[]`
    - `field` (string Field) — required
      The name of the vector field to search against
    - `query_vector` (QueryVector) — optional
      The query vector
    - `query_vector_builder` ({} QueryVectorBuilder) — optional
      The query vector builder. You must provide a query_vector_builder or query_vector, but not both.
      - `embedding` ({} Embedding) — optional
        - `inference_id` (string) — optional
        - `input` (KnnEmbeddingInput) — required
        - `timeout` (string Duration) — optional
      - `text_embedding` ({} TextEmbedding) — optional
        - `model_id` (string) — optional
          Model ID is required for all dense_vector fields but
may be inferred for semantic_text fields
        - `model_text` (string) — required
          The text to be converted into a vector by the specified model
      - `lookup` ({} LookupQueryVectorBuilder) — optional
        Lookup a vector from an existing document.
Must reference a dense_vector field and a single value.
        - `id` (string) — required
          The ID of the document to fetch the vector from
        - `index` (string) — required
          The name of the index to fetch the document from
        - `path` (string) — required
          The name of the field containing the vector
        - `routing` (string) — optional
          The routing value to use when fetching the document
    - `k` (number) — optional
      The final number of nearest neighbors to return as top hits
    - `num_candidates` (number) — optional
      The number of nearest neighbor candidates to consider per shard
    - `visit_percentage` (number) — optional
      The percentage of vectors to explore per shard while doing knn search with bbq_disk
    - `boost` (number) — optional
      Boost value to apply to kNN scores
    - `filter` (union oneOf) — optional
      Filters for the kNN search query
      One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
    - `similarity` (number) — optional
      The minimum similarity for a vector to be considered a match
    - `inner_hits` ({} InnerHits) — optional
      If defined, each search hit will contain inner hits.
      - `name` (string Name) — optional
        The name for the particular inner hit definition in the response.
Useful when a search request contains multiple inner hits.
      - `size` (number · default: 3) — optional
        The maximum number of hits to return per `inner_hits`.
      - `from` (number · default: 0) — optional
        Inner hit starting document offset.
      - `collapse` ({} FieldCollapse) — optional
        - `field` (string Field) — required
          The field to collapse the result set on
        - `inner_hits` (union oneOf) — optional — recursive
          The number of inner hits and their sort order
          `InnerHits` or `InnerHits[]`
        - `max_concurrent_group_searches` (number) — optional
          The number of concurrent requests allowed to retrieve the inner_hits per group
        - `collapse` ({} FieldCollapse) — optional — recursive
          Same fields as `collapse` in `inner_hits`
      - `docvalue_fields` ([] FieldAndFormat) — optional
        - `field` (string Field) — required
          A wildcard pattern. The request returns values for field names matching this pattern.
        - `format` (string) — optional
          The format in which the values are returned.
        - `include_unmapped` (boolean) — optional
      - `explain` (boolean) — optional
      - `highlight` ({} Highlight) — optional
        Same fields as `highlight` in `inner_hits`
      - `ignore_unmapped` (boolean) — optional
      - `script_fields` (map string to ScriptField) — optional
        Map values ({} ScriptField)
        - `script` (string Script) — required
        - `ignore_failure` (boolean) — optional
      - `seq_no_primary_term` (boolean) — optional
      - `field` ([] string Field) — optional
      - `fields` ([] FieldAndFormat) — optional
        - `field` (string Field) — required
          A wildcard pattern. The request returns values for field names matching this pattern.
        - `format` (string) — optional
          The format in which the values are returned.
        - `include_unmapped` (boolean) — optional
      - `sort` (Sort) — optional
        How the inner hits should be sorted per `inner_hits`.
By default, inner hits are sorted by score.
      - `_source` (SourceConfig) — optional
      - `stored_fields` (string Fields) — optional
      - `track_scores` (boolean · default: false) — optional
      - `version` (boolean) — optional
    - `rescore_vector` ({} RescoreVector) — optional
      Apply oversampling and rescoring to quantized vectors
      - `oversample` (number) — required
        Applies the specified oversample factor to k on the approximate kNN search
    - `_name` (string) — optional
  - `rank` ({} RankContainer) — optional
    The Reciprocal Rank Fusion (RRF) to use.
    - `rrf` ({} RrfRank) — optional
      The reciprocal rank fusion parameters
      - `rank_constant` (number) — optional
        How much influence documents in individual result sets per query have over the final ranked result set
      - `rank_window_size` (number) — optional
        Size of the individual result sets per query
  - `min_score` (number) — optional
    The minimum `_score` for matching documents.
Documents with a lower `_score` are not included in search results or results collected by aggregations.
  - `post_filter` ({} QueryContainer) — optional
    Use the `post_filter` parameter to filter search results.
The search hits are filtered after the aggregations are calculated.
A post filter has no impact on the aggregation results.
    See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
  - `profile` (boolean · default: false) — optional
    Set to `true` to return detailed timing information about the execution of individual components in a search request.
NOTE: This is a debugging tool and adds significant overhead to search execution.
  - `query` ({} QueryContainer) — optional
    The search definition using the Query DSL.
    See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
  - `rescore` (union oneOf) — optional
    Can be used to improve precision by reordering just the top (for example 100 - 500) documents returned by the `query` and `post_filter` phases.
    `Rescore` or `Rescore[]`
    - `window_size` (number) — optional
    - `query` ({} RescoreQuery) — optional
      - `rescore_query` ({} QueryContainer) — required
        The query to use for rescoring.
This query is only run on the Top-K results returned by the `query` and `post_filter` phases.
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `query_weight` (number · default: 1) — optional
        Relative importance of the original query versus the rescore query.
      - `rescore_query_weight` (number · default: 1) — optional
        Relative importance of the rescore query versus the original query.
      - `score_mode` (enum ScoreMode · default: total) — optional
        Determines how scores are combined.

Supported values include:
  - `avg`: Average the original score and the rescore query score.
  - `max`: Take the max of original score and the rescore query score.
  - `min`: Take the min of the original score and the rescore query score.
  - `multiply`: Multiply the original score by the rescore query score.
Useful for `function` query rescores.
  - `total`: Add the original score and the rescore query score.
        Values: `avg`, `max`, `min`, `multiply`, `total`
    - `learning_to_rank` ({} LearningToRank) — optional
      - `model_id` (string) — required
        The unique identifier of the trained model uploaded to Elasticsearch
      - `params` (map string to object) — optional
        Named parameters to be passed to the query templates used for feature
    - `script` ({} ScriptRescore) — optional
      - `script` (string Script) — required
  - `retriever` ({} RetrieverContainer) — optional
    A retriever is a specification to describe top documents returned from a search.
A retriever replaces other elements of the search API that also return top documents such as `query` and `knn`.
    - `standard` ({} StandardRetriever) — optional
      A retriever that replaces the functionality of a traditional query.
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `query` ({} QueryContainer) — optional
        Defines a query to retrieve a set of top documents.
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `search_after` (SortResults) — optional
        Defines a search after object parameter used for pagination.
      - `terminate_after` (number) — optional
        Maximum number of documents to collect for each shard.
      - `sort` (Sort) — optional
        A sort object that that specifies the order of matching documents.
      - `collapse` ({} FieldCollapse) — optional
        Collapses the top documents by a specified key into a single top document per key.
        Same fields as `collapse` in `SearchRequestBody`
    - `knn` ({} KnnRetriever) — optional
      A retriever that replaces the functionality  of a knn search.
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `field` (string) — required
        The name of the vector field to search against.
      - `query_vector` (QueryVector) — optional
        Query vector. Must have the same number of dimensions as the vector field you are searching against. You must provide a query_vector_builder or query_vector, but not both.
      - `query_vector_builder` ({} QueryVectorBuilder) — optional
        Defines a model to build a query vector.
        Same fields as `query_vector_builder` in `knn`
      - `k` (number) — required
        Number of nearest neighbors to return as top hits.
      - `num_candidates` (number) — optional
        Number of nearest neighbor candidates to consider per shard.
      - `visit_percentage` (number) — optional
        The percentage of vectors to explore per shard while doing knn search with bbq_disk
      - `similarity` (number) — optional
        The minimum similarity required for a document to be considered a match.
      - `rescore_vector` ({} RescoreVector) — optional
        Apply oversampling and rescoring to quantized vectors
        - `oversample` (number) — required
          Applies the specified oversample factor to k on the approximate kNN search
    - `rrf` ({} RRFRetriever) — optional
      A retriever that produces top documents from reciprocal rank fusion (RRF).
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `retrievers` ([] union RRFRetrieverEntry) — required — recursive
        A list of child retrievers to specify which sets of returned top documents will have the RRF formula applied to them. Each retriever can optionally include a weight parameter.
      - `rank_constant` (number) — optional
        This value determines how much influence documents in individual result sets per query have over the final ranked result set.
      - `rank_window_size` (number) — optional
        This value determines the size of the individual result sets per query.
      - `query` (string) — optional
      - `fields` ([] string) — optional
    - `text_similarity_reranker` ({} TextSimilarityReranker) — optional
      A retriever that reranks the top documents based on a reranking model using the InferenceAPI
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `retriever` ({} RetrieverContainer) — required — recursive
        The nested retriever which will produce the first-level results, that will later be used for reranking.
        Same fields as `retriever` in `SearchRequestBody`
      - `rank_window_size` (number) — optional
        This value determines how many documents we will consider from the nested retriever.
      - `inference_id` (string) — optional
        Unique identifier of the inference endpoint created using the inference API.
      - `inference_text` (string) — required
        The text snippet used as the basis for similarity comparison.
      - `field` (string) — required
        The document field to be used for text similarity comparisons. This field should contain the text that will be evaluated against the inference_text.
      - `chunk_rescorer` ({} ChunkRescorer) — optional
        Whether to rescore on only the best matching chunks.
        - `size` (number) — optional
          The number of chunks per document to evaluate for reranking.
        - `chunking_settings` ({} ChunkRescorerChunkingSettings) — optional
          Chunking settings to apply
          - `max_chunk_size` (number · default: 250) — required
            The maximum size of a chunk in words.
This value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).
This value should not exceed the window size for the associated model.
          - `overlap` (number · default: 100) — optional
            The number of overlapping words for chunks.
It is applicable only to a `word` chunking strategy.
This value cannot be higher than half the `max_chunk_size` value.
          - `sentence_overlap` (number · default: 1) — optional
            The number of overlapping sentences for chunks.
It is applicable only for a `sentence` chunking strategy.
It can be either `1` or `0`.
          - `separator_group` (string) — optional
            Only applicable to the `recursive` strategy and required when using it.

Sets a predefined list of separators in the saved chunking settings based on the selected text type.
Values can be `markdown` or `plaintext`.

Using this parameter is an alternative to manually specifying a custom `separators` list.
          - `separators` ([] string) — optional
            Only applicable to the `recursive` strategy and required when using it.

A list of strings used as possible split points when chunking text.

Each string can be a plain string or a regular expression (regex) pattern.
The system tries each separator in order to split the text, starting from the first item in the list.

After splitting, it attempts to recombine smaller pieces into larger chunks that stay within
the `max_chunk_size` limit, to reduce the total number of chunks generated.
          - `strategy` (string · default: sentence) — optional
            The chunking strategy: `sentence`, `word`, `none` or `recursive`.

 * If `strategy` is set to `recursive`, you must also specify:

- `max_chunk_size`
- either `separators` or`separator_group`

Learn more about different chunking strategies in the linked documentation.
    - `rule` ({} RuleRetriever) — optional
      A retriever that replaces the functionality of a rule query.
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `ruleset_ids` (union Id | [] Id) — required
        The ruleset IDs containing the rules this retriever is evaluating against.
      - `match_criteria` (object) — required
        The match criteria that will determine if a rule in the provided rulesets should be applied.
      - `retriever` ({} RetrieverContainer) — required — recursive
        The retriever whose results rules should be applied to.
        Same fields as `retriever` in `SearchRequestBody`
      - `rank_window_size` (number) — optional
        This value determines the size of the individual result set.
    - `rescorer` ({} RescorerRetriever) — optional
      A retriever that re-scores only the results produced by its child retriever.
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `retriever` ({} RetrieverContainer) — required — recursive
        Inner retriever.
        Same fields as `retriever` in `SearchRequestBody`
      - `rescore` (union oneOf) — required
        Same options as `rescore` in `SearchRequestBody`
        `Rescore` or `Rescore[]`
    - `linear` ({} LinearRetriever) — optional
      A retriever that supports the combination of different retrievers through a weighted linear combination.
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `retrievers` ([] InnerRetriever) — optional
        Inner retrievers.
        - `retriever` ({} RetrieverContainer) — required — recursive
          The nested retriever configuration.
          Same fields as `retriever` in `SearchRequestBody`
        - `weight` (number · default: 1) — optional
          Weight multiplier for this retriever's contribution to the linear combination.
Must be non-negative.
        - `normalizer` (enum ScoreNormalizer · default: none) — optional
          Score normalizer to apply to this retriever's results before weighting.
Falls back to the top-level `normalizer` on the linear retriever if unset,
then to `none` (identity) if neither is set.
          Values: `none`, `minmax`, `l2_norm`
      - `rank_window_size` (number) — optional
      - `query` (string) — optional
      - `fields` ([] string) — optional
      - `normalizer` (enum ScoreNormalizer) — optional
        Values: `none`, `minmax`, `l2_norm`
    - `pinned` ({} PinnedRetriever) — optional
      A pinned retriever applies pinned documents to the underlying retriever.
This retriever will rewrite to a PinnedQueryBuilder.
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `retriever` ({} RetrieverContainer) — required — recursive
        Inner retriever.
        Same fields as `retriever` in `SearchRequestBody`
      - `ids` ([] string) — optional
      - `docs` ([] SpecifiedDocument) — optional
        - `index` (string IndexName) — optional
        - `id` (string Id) — required
      - `rank_window_size` (number) — optional
    - `diversify` ({} DiversifyRetriever) — optional
      A retriever that diversifies the results from its child retriever.
      - `filter` (union oneOf) — optional
        Query to filter the documents that can match.
        One of: [`QueryContainer[]`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer) or [`QueryContainer`](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
        See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
      - `min_score` (number) — optional
        Minimum _score for matching documents. Documents with a lower _score are not included in the top documents.
      - `_name` (string) — optional
        Retriever name.
      - `type` (enum DiversifyRetrieverTypes) — required
        The diversification strategy to apply.
        Values: `mmr`
      - `field` (string) — required
        The document field on which to diversify results on.
      - `retriever` ({} RetrieverContainer) — required — recursive
        The nested retriever whose results will be diversified.
        Same fields as `retriever` in `SearchRequestBody`
      - `size` (number) — optional
        The number of top documents to return after diversification.
      - `rank_window_size` (number) — optional
        The number of top documents from the nested retriever to consider for diversification.
      - `query_vector` (QueryVector) — optional
        The query vector used for diversification.
      - `query_vector_builder` ({} QueryVectorBuilder) — optional
        a dense vector query vector builder to use instead of a static query_vector
        Same fields as `query_vector_builder` in `knn`
      - `lambda` (number) — optional
        Controls the trade-off between relevance and diversity for MMR. A value of 0.0 focuses solely on diversity, while a value of 1.0 focuses solely on relevance. Required for MMR
  - `script_fields` (map string to ScriptField) — optional
    Retrieve a script evaluation (based on different fields) for each hit.
    Map values ({} ScriptField)
    - `script` (string Script) — required
    - `ignore_failure` (boolean) — optional
  - `search_after` (SortResults) — optional
    Used to retrieve the next page of hits using a set of sort values from the previous page.
  - `size` (number · default: 10) — optional
    The number of hits to return, which must not be negative.
By default, you cannot page through more than 10,000 hits using the `from` and `size` parameters.
To page through more hits, use the `search_after` property.
  - `slice` ({} SlicedScroll) — optional
    Split a scrolled search into multiple slices that can be consumed independently.
    - `field` (string Field) — optional
    - `id` (string Id) — required
    - `max` (number) — required
  - `sort` (Sort) — optional
    A comma-separated list of <field>:<direction> pairs.
  - `_source` (SourceConfig) — optional
    The source fields that are returned for matching documents.
These fields are returned in the `hits._source` property of the search response.
If the `stored_fields` property is specified, the `_source` property defaults to `false`.
Otherwise, it defaults to `true`.
  - `fields` ([] FieldAndFormat) — optional
    An array of wildcard (`*`) field patterns.
The request returns values for field names matching these patterns in the `hits.fields` property of the response.
    - `field` (string Field) — required
      A wildcard pattern. The request returns values for field names matching this pattern.
    - `format` (string) — optional
      The format in which the values are returned.
    - `include_unmapped` (boolean) — optional
  - `suggest` ({} Suggester) — optional
    Defines a suggester that provides similar looking terms based on a provided text.
    - `text` (string) — optional
      Global suggest text, to avoid repetition when the same text is used in several suggesters
  - `terminate_after` (number · default: 0) — optional
    The maximum number of documents to collect for each shard.
If a query reaches this limit, Elasticsearch terminates the query early.
Elasticsearch collects documents before sorting.

IMPORTANT: Use with caution.
Elasticsearch applies this property to each shard handling the request.
When possible, let Elasticsearch perform early termination automatically.
Avoid specifying this property for requests that target data streams with backing indices across multiple data tiers.

If set to `0` (default), the query does not terminate early.
  - `timeout` (string) — optional
    The period of time to wait for a response from each shard.
If no response is received before the timeout expires, the request fails and returns an error.
Defaults to no timeout.
  - `track_scores` (boolean · default: false) — optional
    If `true`, calculate and return document scores, even if the scores are not used for sorting.
  - `version` (boolean · default: false) — optional
    If `true`, the request returns the document version as part of a hit.
  - `seq_no_primary_term` (boolean) — optional
    If `true`, the request returns sequence number and primary term of the last modification of each hit.
  - `stored_fields` (string Fields) — optional
    A comma-separated list of stored fields to return as part of a hit.
If no fields are specified, no stored fields are included in the response.
If this field is specified, the `_source` property defaults to `false`.
You can pass `_source: true` to return both source fields and stored fields in the search response.
  - `pit` ({} PointInTimeReference) — optional
    Limit the search to a point in time (PIT).
If you provide a PIT, you cannot specify an `<index>` in the request path.
    - `id` (string Id) — required
    - `keep_alive` (string Duration) — optional
  - `runtime_mappings` (RuntimeFields) — optional
    One or more runtime fields in the search request.
These fields take precedence over mapped fields with the same name.
  - `stats` ([] string) — optional
    The stats groups to associate with the search.
Each group maintains a statistics aggregation for its associated searches.
You can retrieve these stats using the indices stats API.

## Response

`application/json`

- `docs` ([] union ResponseItem)
  - **MultiSearchItem**
    - `took` (number)
      The number of milliseconds it took Elasticsearch to run the request.
This value is calculated by measuring the time elapsed between receipt of a request on the coordinating node and the time at which the coordinating node is ready to send the response.
It includes:

* Communication time between the coordinating node and data nodes
* Time the request spends in the search thread pool, queued for execution
* Actual run time

It does not include:

* Time needed to send the request to Elasticsearch
* Time needed to serialize the JSON response
* Time needed to send the response to a client
    - `timed_out` (boolean)
      If `true`, the request timed out before completion; returned results may be partial or empty.
    - `_shards` ({} ShardStatistics)
      A count of shards used for the request.
      - `failed` (number uint)
        The number of shards the operation or search attempted to run on but failed.
      - `successful` (number uint)
        The number of shards the operation or search succeeded on.
      - `total` (number uint)
        The number of shards the operation or search will run on overall.
      - `failures` ([] ShardFailure)
        - `index` (string IndexName)
        - `node` (string)
        - `reason` ({} ErrorCause)
          - `type` (string)
            The type of error
          - `reason` (union string) — nullable
            A human-readable explanation of the error, in English.
            One of: `string`
          - `stack_trace` (string)
            The server stack trace. Present only if the `error_trace=true` parameter was sent with the request.
          - `caused_by` ({} ErrorCause) — recursive
            Same fields as `reason` in `failures`
          - `root_cause` ([] ErrorCause) — recursive
            Same fields as `reason` in `failures`
          - `suppressed` ([] ErrorCause) — recursive
            Same fields as `reason` in `failures`
        - `shard` (number)
        - `status` (string)
        - `primary` (boolean)
      - `skipped` (number uint)
    - `hits` ({} HitsMetadata)
      The returned documents and metadata.
      - `total` (union oneOf)
        Total hit count information, present only if `track_total_hits` wasn't `false` in the search request.
        - **TotalHits**
          - `relation` (enum TotalHitsRelation)
            

Supported values include:
  - `eq`: Accurate
  - `gte`: Lower bound, including returned events or sequences
            Values: `eq`, `gte`
          - `value` (number)
        - **number**
      - `hits` ([] Hit)
        - `_index` (string IndexName)
        - `_id` (string Id)
        - `_score` (union number | string) — nullable
        - `_explanation` ({} Explanation)
          - `description` (string)
          - `details` ([] ExplanationDetail)
            - `description` (string)
            - `details` ([] ExplanationDetail) — recursive
              Same fields as `details` in `_explanation`
            - `value` (number)
          - `value` (number)
        - `fields` (map string to object)
        - `highlight` (map string to string)
        - `inner_hits` (map string to InnerHitsResult)
          Map values ({} InnerHitsResult)
          - `hits` ({} HitsMetadata) — recursive
            Same fields as `hits` in `MultiSearchItem`
        - `matched_queries` (union oneOf)
          One of: `string[]` or `string to number`
        - `_nested` ({} NestedIdentity)
          - `field` (string Field)
          - `offset` (number)
          - `_nested` ({} NestedIdentity) — recursive
            Same fields as `_nested` in `hits`
        - `_ignored` ([] string)
        - `ignored_field_values` (map string to object)
        - `_shard` (string)
        - `_node` (string)
        - `_routing` (string)
        - `_source` (object)
        - `_rank` (number)
        - `_seq_no` (number SequenceNumber)
        - `_primary_term` (number)
        - `_version` (number VersionNumber)
        - `sort` (SortResults)
      - `max_score` (union number | string) — nullable
    - `aggregations` (map string to {} Aggregate)
      See [Aggregate](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-aggregations-aggregate)
    - `_clusters` ({} ClusterStatistics)
      - `skipped` (number)
      - `successful` (number)
      - `total` (number)
      - `running` (number)
      - `partial` (number)
      - `failed` (number)
      - `details` (map string to ClusterDetails)
        Map values ({} ClusterDetails)
        - `status` (enum ClusterSearchStatus)
          Values: `running`, `successful`, `partial`, `skipped`, `failed`
        - `indices` (string)
        - `took` (DurationValueUnitMillis)
        - `timed_out` (boolean)
        - `_shards` ({} ShardStatistics)
          Same fields as `_shards` in `MultiSearchItem`
        - `failures` ([] ShardFailure)
          Same fields as `failures` in `_shards`
    - `fields` (map string to object)
    - `max_score` (number)
    - `num_reduce_phases` (number)
    - `profile` ({} Profile)
      - `shards` ([] ShardProfile)
        - `aggregations` ([] AggregationProfile)
          - `breakdown` ({} AggregationBreakdown)
            - `build_aggregation` (number)
            - `build_aggregation_count` (number)
            - `build_leaf_collector` (number)
            - `build_leaf_collector_count` (number)
            - `collect` (number)
            - `collect_count` (number)
            - `initialize` (number)
            - `initialize_count` (number)
            - `post_collection` (number)
            - `post_collection_count` (number)
            - `reduce` (number)
            - `reduce_count` (number)
          - `description` (string)
          - `time_in_nanos` (DurationValueUnitNanos)
          - `type` (string)
          - `debug` ({} AggregationProfileDebug)
            - `segments_with_multi_valued_ords` (number)
            - `collection_strategy` (string)
            - `segments_with_single_valued_ords` (number)
            - `total_buckets` (number)
            - `built_buckets` (number)
            - `result_strategy` (string)
            - `has_filter` (boolean)
            - `delegate` (string)
            - `delegate_debug` ({} AggregationProfileDebug) — recursive
              Same fields as `debug` in `aggregations`
            - `chars_fetched` (number)
            - `extract_count` (number)
            - `extract_ns` (number)
            - `values_fetched` (number)
            - `collect_analyzed_ns` (number)
            - `collect_analyzed_count` (number)
            - `surviving_buckets` (number)
            - `ordinals_collectors_used` (number)
            - `ordinals_collectors_overhead_too_high` (number)
            - `string_hashing_collectors_used` (number)
            - `numeric_collectors_used` (number)
            - `empty_collectors_used` (number)
            - `deferred_aggregators` ([] string)
            - `segments_with_doc_count_field` (number)
            - `segments_with_deleted_docs` (number)
            - `filters` ([] AggregationProfileDelegateDebugFilter)
              - `results_from_metadata` (number)
              - `query` (string)
              - `specialized_for` (string)
              - `segments_counted_in_constant_time` (number)
            - `segments_counted` (number)
            - `segments_collected` (number)
            - `map_reducer` (string)
            - `brute_force_used` (number)
            - `dynamic_pruning_attempted` (number)
            - `dynamic_pruning_used` (number)
            - `skipped_due_to_no_data` (number)
          - `children` ([] AggregationProfile) — recursive
            Same fields as `aggregations` in `shards`
        - `cluster` (string)
        - `dfs` ({} DfsProfile)
          - `statistics` ({} DfsStatisticsProfile)
            - `type` (string)
            - `description` (string)
            - `time` (string Duration)
            - `time_in_nanos` (DurationValueUnitNanos)
            - `breakdown` ({} DfsStatisticsBreakdown)
              - `collection_statistics` (number)
              - `collection_statistics_count` (number)
              - `create_weight` (number)
              - `create_weight_count` (number)
              - `rewrite` (number)
              - `rewrite_count` (number)
              - `term_statistics` (number)
              - `term_statistics_count` (number)
            - `debug` (map string to object)
            - `children` ([] DfsStatisticsProfile) — recursive
              Same fields as `statistics` in `dfs`
          - `knn` ([] DfsKnnProfile)
            - `vector_operations_count` (number)
            - `query` ([] KnnQueryProfileResult)
              - `type` (string)
              - `description` (string)
              - `time` (string Duration)
              - `time_in_nanos` (DurationValueUnitNanos)
              - `breakdown` ({} KnnQueryProfileBreakdown)
                - `advance` (number)
                - `advance_count` (number)
                - `build_scorer` (number)
                - `build_scorer_count` (number)
                - `compute_max_score` (number)
                - `compute_max_score_count` (number)
                - `count_weight` (number)
                - `count_weight_count` (number)
                - `create_weight` (number)
                - `create_weight_count` (number)
                - `match` (number)
                - `match_count` (number)
                - `next_doc` (number)
                - `next_doc_count` (number)
                - `score` (number)
                - `score_count` (number)
                - `set_min_competitive_score` (number)
                - `set_min_competitive_score_count` (number)
                - `shallow_advance` (number)
                - `shallow_advance_count` (number)
              - `debug` (map string to object)
              - `children` ([] KnnQueryProfileResult) — recursive
                Same fields as `query` in `knn`
            - `rewrite_time` (number)
            - `collector` ([] KnnCollectorResult)
              - `name` (string)
              - `reason` (string)
              - `time` (string Duration)
              - `time_in_nanos` (DurationValueUnitNanos)
              - `children` ([] KnnCollectorResult) — recursive
                Same fields as `collector` in `knn`
        - `fetch` ({} FetchProfile)
          - `type` (string)
          - `description` (string)
          - `time_in_nanos` (DurationValueUnitNanos)
          - `breakdown` ({} FetchProfileBreakdown)
            - `load_source` (number)
            - `load_source_count` (number)
            - `load_stored_fields` (number)
            - `load_stored_fields_count` (number)
            - `next_reader` (number)
            - `next_reader_count` (number)
            - `process_count` (number)
            - `process` (number)
          - `debug` ({} FetchProfileDebug)
            - `stored_fields` ([] string)
            - `fast_path` (number)
          - `children` ([] FetchProfile) — recursive
            Same fields as `fetch` in `shards`
        - `id` (string)
        - `index` (string IndexName)
        - `node_id` (string)
        - `searches` ([] SearchProfile)
          - `collector` ([] Collector)
            - `name` (string)
            - `reason` (string)
            - `time_in_nanos` (DurationValueUnitNanos)
            - `children` ([] Collector) — recursive
              Same fields as `collector` in `searches`
          - `query` ([] QueryProfile)
            - `breakdown` ({} QueryBreakdown)
              - `advance` (number)
              - `advance_count` (number)
              - `build_scorer` (number)
              - `build_scorer_count` (number)
              - `create_weight` (number)
              - `create_weight_count` (number)
              - `match` (number)
              - `match_count` (number)
              - `shallow_advance` (number)
              - `shallow_advance_count` (number)
              - `next_doc` (number)
              - `next_doc_count` (number)
              - `score` (number)
              - `score_count` (number)
              - `compute_max_score` (number)
              - `compute_max_score_count` (number)
              - `count_weight` (number)
              - `count_weight_count` (number)
              - `set_min_competitive_score` (number)
              - `set_min_competitive_score_count` (number)
            - `description` (string)
            - `time_in_nanos` (DurationValueUnitNanos)
            - `type` (string)
            - `children` ([] QueryProfile) — recursive
              Same fields as `query` in `searches`
          - `rewrite_time` (number)
        - `shard_id` (number)
      - `request` ({} SearchRequestCoordinatorMetadata)
        When profiling is enabled, the original query source and target indices from the coordinating request.
        - `source` ({} SearchRequestBody)
          Original query source from the search request (`SearchSourceBuilder` as JSON).
          - `aggregations` (map string to {} AggregationContainer)
            Defines the aggregations that are run as part of the search request.
            See [AggregationContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-aggregations-aggregationcontainer)
          - `collapse` ({} FieldCollapse)
            Collapses search results the values of the specified field.
            Same fields as `collapse` in `SearchRequestBody`
          - `explain` (boolean · default: false)
            If `true`, the request returns detailed information about score computation as part of a hit.
          - `ext` (map string to object)
            Configuration of search extensions defined by Elasticsearch plugins.
          - `from` (number · default: 0)
            The starting document offset, which must be non-negative.
By default, you cannot page through more than 10,000 hits using the `from` and `size` parameters.
To page through more hits, use the `search_after` parameter.
          - `highlight` ({} Highlight)
            Specifies the highlighter to use for retrieving highlighted snippets from one or more fields in your search results.
            Same fields as `highlight` in `inner_hits`
          - `track_total_hits` (boolean | number · default: 10000)
            Number of hits matching the query to count accurately.
If `true`, the exact number of hits is returned at the cost of some performance.
If `false`, the  response does not include the total number of hits matching the query.
          - `indices_boost` ([] string to number)
            Boost the `_score` of documents from specified indices.
The boost value is the factor by which scores are multiplied.
A boost value greater than `1.0` increases the score.
A boost value between `0` and `1.0` decreases the score.
          - `docvalue_fields` ([] FieldAndFormat)
            An array of wildcard (`*`) field patterns.
The request returns doc values for field names matching these patterns in the `hits.fields` property of the response.
            - `field` (string Field)
              A wildcard pattern. The request returns values for field names matching this pattern.
            - `format` (string)
              The format in which the values are returned.
            - `include_unmapped` (boolean)
          - `knn` (union oneOf)
            The approximate kNN search to run.
            Same options as `knn` in `SearchRequestBody`
            `KnnSearch` or `KnnSearch[]`
          - `rank` ({} RankContainer)
            The Reciprocal Rank Fusion (RRF) to use.
            - `rrf` ({} RrfRank)
              The reciprocal rank fusion parameters
              - `rank_constant` (number)
                How much influence documents in individual result sets per query have over the final ranked result set
              - `rank_window_size` (number)
                Size of the individual result sets per query
          - `min_score` (number)
            The minimum `_score` for matching documents.
Documents with a lower `_score` are not included in search results or results collected by aggregations.
          - `post_filter` ({} QueryContainer)
            Use the `post_filter` parameter to filter search results.
The search hits are filtered after the aggregations are calculated.
A post filter has no impact on the aggregation results.
            See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
          - `profile` (boolean · default: false)
            Set to `true` to return detailed timing information about the execution of individual components in a search request.
NOTE: This is a debugging tool and adds significant overhead to search execution.
          - `query` ({} QueryContainer)
            The search definition using the Query DSL.
            See [QueryContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-query_dsl-querycontainer)
          - `rescore` (union oneOf)
            Can be used to improve precision by reordering just the top (for example 100 - 500) documents returned by the `query` and `post_filter` phases.
            Same options as `rescore` in `SearchRequestBody`
            `Rescore` or `Rescore[]`
          - `retriever` ({} RetrieverContainer)
            A retriever is a specification to describe top documents returned from a search.
A retriever replaces other elements of the search API that also return top documents such as `query` and `knn`.
            Same fields as `retriever` in `SearchRequestBody`
          - `script_fields` (map string to ScriptField)
            Retrieve a script evaluation (based on different fields) for each hit.
            Map values ({} ScriptField)
            - `script` (string Script)
            - `ignore_failure` (boolean)
          - `search_after` (SortResults)
            Used to retrieve the next page of hits using a set of sort values from the previous page.
          - `size` (number · default: 10)
            The number of hits to return, which must not be negative.
By default, you cannot page through more than 10,000 hits using the `from` and `size` parameters.
To page through more hits, use the `search_after` property.
          - `slice` ({} SlicedScroll)
            Split a scrolled search into multiple slices that can be consumed independently.
            - `field` (string Field)
            - `id` (string Id)
            - `max` (number)
          - `sort` (Sort)
            A comma-separated list of <field>:<direction> pairs.
          - `_source` (SourceConfig)
            The source fields that are returned for matching documents.
These fields are returned in the `hits._source` property of the search response.
If the `stored_fields` property is specified, the `_source` property defaults to `false`.
Otherwise, it defaults to `true`.
          - `fields` ([] FieldAndFormat)
            An array of wildcard (`*`) field patterns.
The request returns values for field names matching these patterns in the `hits.fields` property of the response.
            - `field` (string Field)
              A wildcard pattern. The request returns values for field names matching this pattern.
            - `format` (string)
              The format in which the values are returned.
            - `include_unmapped` (boolean)
          - `suggest` ({} Suggester)
            Defines a suggester that provides similar looking terms based on a provided text.
            - `text` (string)
              Global suggest text, to avoid repetition when the same text is used in several suggesters
          - `terminate_after` (number · default: 0)
            The maximum number of documents to collect for each shard.
If a query reaches this limit, Elasticsearch terminates the query early.
Elasticsearch collects documents before sorting.

IMPORTANT: Use with caution.
Elasticsearch applies this property to each shard handling the request.
When possible, let Elasticsearch perform early termination automatically.
Avoid specifying this property for requests that target data streams with backing indices across multiple data tiers.

If set to `0` (default), the query does not terminate early.
          - `timeout` (string)
            The period of time to wait for a response from each shard.
If no response is received before the timeout expires, the request fails and returns an error.
Defaults to no timeout.
          - `track_scores` (boolean · default: false)
            If `true`, calculate and return document scores, even if the scores are not used for sorting.
          - `version` (boolean · default: false)
            If `true`, the request returns the document version as part of a hit.
          - `seq_no_primary_term` (boolean)
            If `true`, the request returns sequence number and primary term of the last modification of each hit.
          - `stored_fields` (string Fields)
            A comma-separated list of stored fields to return as part of a hit.
If no fields are specified, no stored fields are included in the response.
If this field is specified, the `_source` property defaults to `false`.
You can pass `_source: true` to return both source fields and stored fields in the search response.
          - `pit` ({} PointInTimeReference)
            Limit the search to a point in time (PIT).
If you provide a PIT, you cannot specify an `<index>` in the request path.
            - `id` (string Id)
            - `keep_alive` (string Duration)
          - `runtime_mappings` (RuntimeFields)
            One or more runtime fields in the search request.
These fields take precedence over mapped fields with the same name.
          - `stats` ([] string)
            The stats groups to associate with the search.
Each group maintains a statistics aggregation for its associated searches.
You can retrieve these stats using the indices stats API.
        - `indices` ([] string IndexName)
          Target index expressions from the request (before index resolution).
    - `pit_id` (string Id)
      An updated identifier for the point-in-time that was searched.

IMPORTANT: Each search request against a PIT returns in its response a `pit_id` field which may be different from the identifier you originally supplied.
Always use the most recently-received PIT identifier for the next request.
If you make concurrent search requests against the same PIT, Elasticsearch can return several different `pit_id` values in its responses.
In that case, use any of these values for later requests, preferring more recently-received values whenever possible.
    - `_scroll_id` (string ScrollId)
      The identifier for the search and its search context.
You can use this scroll ID with the scroll API to retrieve the next batch of search results for the request.
This property is returned only if the `scroll` query parameter is specified in the request.
    - `suggest` (map string to Suggest)
    - `terminated_early` (boolean)
    - `status` (number)
  - **ErrorResponseBase**
    The response returned by Elasticsearch when request execution did not succeed.
    - `error` ({} ErrorCause)
      - `type` (string)
        The type of error
      - `reason` (union string) — nullable
        A human-readable explanation of the error, in English.
        One of: `string`
      - `stack_trace` (string)
        The server stack trace. Present only if the `error_trace=true` parameter was sent with the request.
      - `caused_by` ({} ErrorCause) — recursive
        Same fields as `error` in `ErrorResponseBase`
      - `root_cause` ([] ErrorCause) — recursive
        Same fields as `error` in `ErrorResponseBase`
      - `suppressed` ([] ErrorCause) — recursive
        Same fields as `error` in `ErrorResponseBase`
    - `status` (number)
## Code Examples

#### Console

```console
POST /{index}/_fleet/_fleet_msearch
```

#### curl

```curl
curl -X POST "/{index}/_fleet/_fleet_msearch"
```