OpenSearch/rest-api-spec/api/indices.put_template.json

{
  "indices.put_template": {
    "documentation": "http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/indices-templates.html",
    "methods": ["PUT", "POST"],
    "url": {
      "path": "/_template/{name}",
      "paths": ["/_template/{name}"],
      "parts": {
        "name": {
          "type" : "string",
          "required" : true,
          "description" : "The name of the template"
        }
      },
      "params": {
        "order": {
          "type" : "number",
          "description" : "The order for this template when merging multiple matching ones (higher numbers are merged later, overriding the lower numbers)"
        },
        "create" : {
            "type" : "boolean",
            "description" : "Whether the index template should only be added if new or can also replace an existing one",
            "default" : false
        },
        "timeout": {
          "type" : "time",
          "description" : "Explicit operation timeout"
        },
        "master_timeout": {
          "type" : "time",
          "description" : "Specify timeout for connection to master"
        },
        "flat_settings": {
           "type": "boolean",
           "description": "Return settings in flat format (default: false)"
        }
      }
    },
    "body": {
      "description" : "The template definition",
      "required" : true
    }
  }
}