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

{
  "indices.exists_alias": {
    "documentation": "http://www.elastic.co/guide/en/elasticsearch/reference/master/indices-aliases.html",
    "methods": ["HEAD"],
    "url": {
      "path": "/_alias/{name}",
      "paths": ["/_alias/{name}", "/{index}/_alias/{name}", "/{index}/_alias"],
      "parts": {
        "index": {
          "type" : "list",
          "description" : "A comma-separated list of index names to filter aliases"
        },
        "name": {
          "type" : "list",
          "description" : "A comma-separated list of alias names to return"
        }
      },
      "params": {
        "ignore_unavailable": {
            "type" : "boolean",
            "description" : "Whether specified concrete indices should be ignored when unavailable (missing or closed)"
        },
        "allow_no_indices": {
           "type" : "boolean",
           "description" : "Whether to ignore if a wildcard indices expression resolves into no concrete indices. (This includes `_all` string or when no indices have been specified)"
        },
        "expand_wildcards": {
           "type" : "enum",
           "options" : ["open","closed","none","all"],
           "default" : ["open", "closed"],
           "description" : "Whether to expand wildcard expression to concrete indices that are open, closed or both."
        },
        "local": {
           "type": "boolean",
           "description": "Return local information, do not retrieve the state from master node (default: false)"
        }
      }
    },
    "body": null
  }
}