Elasticsearch MCP Server for ES 5.x-9.x with a query harness, field validation and full API access
To add Elasticsearch to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 7 environment variables, listed below.
Install
npx -y @tocharianou/elasticsearch-mcp@0.9.1Environment variables
ES_URLSet in your MCP configES_API_KEYSet in your MCP configES_USERNAMESet in your MCP configES_PASSWORDSet in your MCP configES_CA_CERTSet in your MCP configNODE_TLS_REJECT_UNAUTHORIZEDSet in your MCP configMAX_TOKEN_CALLSet in your MCP configInstall with your client
claude mcp add elasticsearch --env ES_URL=<YOUR_ES_URL> --env ES_API_KEY=<YOUR_ES_API_KEY> --env ES_USERNAME=<YOUR_ES_USERNAME> --env ES_PASSWORD=<YOUR_ES_PASSWORD> --env ES_CA_CERT=<YOUR_ES_CA_CERT> --env NODE_TLS_REJECT_UNAUTHORIZED=<YOUR_NODE_TLS_REJECT_UNAUTHORIZED> --env MAX_TOKEN_CALL=<YOUR_MAX_TOKEN_CALL> -- npx -y @tocharianou/elasticsearch-mcp@0.9.1
Run this in a terminal to add the server to Claude Code.
What this does
Elasticsearch exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
ES_URL ES_API_KEY ES_USERNAME ES_PASSWORD ES_CA_CERT NODE_TLS_REJECT_UNAUTHORIZED MAX_TOKEN_CALL
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install Elasticsearch?
Run the Claude Code command in the install section to add Elasticsearch to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with Elasticsearch?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to Elasticsearch as well.
Does Elasticsearch need an API key?
Yes. Before it can run, set these environment variables: ES_URL, ES_API_KEY, ES_USERNAME, ES_PASSWORD, ES_CA_CERT, NODE_TLS_REJECT_UNAUTHORIZED, MAX_TOKEN_CALL. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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