OpenSearch MCP Server

pip install opensearch-mcp-server-py

Maintained inside the OpenSearch project itself, this server gives an agent the operations you would otherwise reach for through the REST API: enumerate indices, fetch a mapping to learn what fields exist, run a search body, and pull cluster and shard health. Both stdio and streaming HTTP transports are supported, and it authenticates against either a self-managed cluster or Amazon OpenSearch Service. Reading the mapping first is the part that changes results — query DSL written against a guessed field name fails silently often enough to matter.