[[data-views-runtime-field-api-create]]
=== Create runtime field API
++++
<titleabbrev>Create runtime field</titleabbrev>
++++

experimental[] Create a runtime field

[[data-views-runtime-field-create-request]]
==== Request

`POST <kibana host>:<port>/api/data_views/data_view/<data_view_id>/runtime_field`

`POST <kibana host>:<port>/s/<space_id>/api/data_views/data_view/<data_view_id>/runtime_field`

[[data-views-runtime-field-create-params]]
==== Path parameters

`space_id`::
(Optional, string) An identifier for the space. If `space_id` is not provided in the URL, the default space is used.

`data_view_id`::
(Required, string) The ID of the data view.

[[data-views-runtime-field-create-body]]
==== Request body

`name`:: (Required, string) The name for a runtime field.

`runtimeField`:: (Required, object) The runtime field definition object.


[[data-views-runtime-field-create-example]]
==== Examples

Create a runtime field on a data view:

[source,sh]
--------------------------------------------------
$ curl -X POST api/data_views/data_view/<data_view_id>/runtime_field
{
  "name": "runtimeFoo",
  "runtimeField": {
     "type": "long",
     "script": {
        "source": "emit(doc["foo"].value)"
      }
  }
}
--------------------------------------------------
// KIBANA

The API returns created runtime field object array and updated data view object:

[source,sh]
--------------------------------------------------
{
    "data_view": {...},
    "fields": [...]
}
--------------------------------------------------