OpenSearch/rest-api-spec/api/count.json

{
  "count": {
    "documentation": "http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-count.html",
    "methods": ["POST", "GET"],
    "url": {
      "path": "/_count",
      "paths": ["/_count", "/{index}/_count", "/{index}/{type}/_count"],
      "parts": {
        "index": {
          "type" : "list",
          "description" : "A comma-separated list of indices to restrict the results"
        },
        "type": {
          "type" : "list",
          "description" : "A comma-separated list of types to restrict the results"
        }
      },
      "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"],
            "default" : "open",
            "description" : "Whether to expand wildcard expression to concrete indices that are open, closed or both."
        },
        "min_score": {
          "type" : "number",
          "description" : "Include only documents with a specific `_score` value in the result"
        },
        "preference": {
          "type" : "string",
          "description" : "Specify the node or shard the operation should be performed on (default: random)"
        },
        "routing": {
          "type" : "string",
          "description" : "Specific routing value"
        },
        "source": {
          "type" : "string",
          "description" : "The URL-encoded query definition (instead of using the request body)"
        }
      }
    },
    "body": {
      "description" : "A query to restrict the results specified with the Query DSL (optional)"
    }
  }
}