Comma-separated list of index template names used to limit the request. Wildcard (*) expressions are supported.
If true, the request retrieves information from the local node only. Defaults to false, which means information is retrieved from the master node.
If true, returns settings in flat format.
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.
curl \
--request HEAD 'http://api.example.com/_index_template/{name}' \
--header "Authorization: $API_KEY"