Updated April 2026

Install MongoDB MCP Server

Pick your client, copy the command, done.

Run this in a terminal.

Run in terminal

claude mcp add -e "MDB_MCP_CONNECTION_STRING=${MDB_MCP_CONNECTION_STRING}" mongodb-mcp -- npx -y mongodb-mcp-server

Required:MDB_MCP_CONNECTION_STRING+ 1 optional

Environment Variables

Set these before running MongoDB MCP Server.

VariableDescriptionRequired

MDB_MCP_CONNECTION_STRINGThe MongoDB connection string for database accessYes

MDB_MCP_ATLAS_API_KEYAPI key for MongoDB Atlas managementNo

Once configured, MongoDB MCP Server gives your AI agent access to:

mongodb_queryExecute queries against a MongoDB database

connection_stringdatabasecollectionfilterlimit

mongodb_atlas_list_clustersList MongoDB Atlas clusters

api_keyapi_secretproject_id

After setup, try these prompts with your AI agent:

→Query the 'users' collection in the 'production' database to find all active accounts.

→List all my MongoDB Atlas clusters and their current status.

→Find the document in the 'logs' collection where the error code is 500.

→Count the number of documents in the 'orders' collection created in the last 24 hours.

Prerequisites & system requirements

An MCP-compatible client (Claude Code, Cursor, Windsurf, Claude Desktop, or Codex)
Node.js 18+ with npm/npx installed
MDB_MCP_CONNECTION_STRING — The MongoDB connection string for database access

Save the docs, env vars, and workflow around MongoDB MCP Server in Conare so Claude Code, Codex, and Cursor remember it next time.