Check indices | Elasticsearch API documentation

Check indices Generally available

HEAD /{index}

Check if one or more indices, index aliases, or data streams exist.

index string | array[string] Required

Comma-separated list of data streams, indices, and aliases. Supports wildcards (*).

allow_no_indices boolean

If false, the request returns an error if any wildcard expression, index alias, or _all value targets only missing or closed indices. This behavior applies even if the request targets other open indices.
expand_wildcards string | array[string]

Type of index that wildcard patterns can match. If the request can target data streams, this argument determines whether wildcard expressions match hidden data streams. Supports comma-separated values, such as open,hidden. Valid values are: all, open, closed, hidden, none.

Values are all, open, closed, hidden, or none.
flat_settings boolean

If true, returns settings in flat format.
ignore_unavailable boolean

If false, the request returns an error if it targets a missing or closed index.
include_defaults boolean

If true, return all default settings in the response.
local boolean

If true, the request retrieves information from the local node only.

HEAD /{index}

HEAD my-data-stream

resp = client.indices.exists(
    index="my-data-stream",
)

const response = await client.indices.exists({
  index: "my-data-stream",
});

response = client.indices.exists(
  index: "my-data-stream"
)

$resp = $client->indices()->exists([
    "index" => "my-data-stream",
]);

curl --head -H "Authorization: ApiKey $ELASTIC_API_KEY" "$ELASTICSEARCH_URL/my-data-stream"