openapi: 3.1.0 info: title: Elasticsearch Bulk Cluster API description: Distributed search and analytics engine REST API for indexing, searching, and analyzing data at scale. Endpoints are derived from the public Elasticsearch REST APIs reference and represent the most commonly used operations. version: 1.0.0 x-generated-from: https://www.elastic.co/guide/en/elasticsearch/reference/current/rest-apis.html x-generated-by: claude-crawl-2026-05-08 servers: - url: https://localhost:9200 description: Default local Elasticsearch endpoint tags: - name: Cluster paths: /_cluster/health: get: summary: Get cluster health operationId: getClusterHealth responses: '200': description: Cluster health response content: application/json: schema: type: object tags: - Cluster