| Connected Account | The connected account to use for the request | Connected Account | Yes | |
| Index ID | ID of the index to retrieve | Text (Short) | Yes | |
| Allow no indices? | If false, return an error if any of the following targets only missing/closed indices: wildcard expression, index alias, or _all value. Defaults to true | True/False | No | |
| Expand wildcards | Type of index that wildcard expressions can match. Defaults to open | Predefined Choice List | No | |
| Flat settings? | Whether to return settings in flat format. Defaults to false | True/False | No | |
| Ignore unavailable? | Whether to request that target a missing index return an error. Defaults to false | True/False | No | |
| Include defaults? | Whether to return all default settings in the response. Defaults to false | True/False | No | |
| Local? | Whether to retrieve information from the local node only. Defaults to false | True/False | No | |
| Master timeout | Period to wait for a connection to the master node. If no response is received before the timeout expires, the request fails and returns an error. Defaults to 1m. See the Elasticsearch time units reference | Text (Short) | No | |