api_server/es_1_0/count.js

module.exports = function (api) {
  api.addEndpointDescription('_count', {
    methods: ['GET', 'POST'],
    priority: 10, // collides with get doc by id
    patterns: [
      "{indices}/{types}/_count",
      "{indices}/_count",
      "_count"
    ],
    url_params: {
      preference: ["_primary", "_primary_first", "_local", "_only_node:xyz", "_prefer_node:xyz", "_shards:2,3"],
      routing: "",
      min_score: 1.0,
      terminate_after: 10,
    },
    data_autocomplete_rules: {
      query: {
        // populated by a global rule
      },
    }
  })
};