Data · MongoDB

Set up MongoDB

Query and administer MongoDB databases and Atlas clusters, using a connection string or an Atlas service account.

Publisher: MongoDB Official
Run locally: npx -y mongodb-mcp-server@latest --readOnly
Transports: stdio, streamable-http
Authentication: A connection string, an Atlas service account with client ID and secret, or both.
Environment: MDB_MCP_CONNECTION_STRINGMDB_MCP_API_CLIENT_IDMDB_MCP_API_CLIENT_SECRET
What it can touch: Read and write; --readOnly limits it to reads.
Licence: Apache-2.0
Source: github.com/mongodb-js/mongodb-mcp-server
Status: Active

Install

This server runs on your machine as a child process of the client. You need the runtime its command uses, such as Node.js for npx, uv for uvx or Docker, plus any variables listed under Environment.

Claude Code

shell

claude mcp add --scope project --env MDB_MCP_CONNECTION_STRING='<MDB_MCP_CONNECTION_STRING>' --env MDB_MCP_API_CLIENT_ID='<MDB_MCP_API_CLIENT_ID>' --env MDB_MCP_API_CLIENT_SECRET='<MDB_MCP_API_CLIENT_SECRET>' mongodb -- npx -y mongodb-mcp-server@latest --readOnly

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "mongodb": {
      "command": "npx",
      "args": [
        "-y",
        "mongodb-mcp-server@latest",
        "--readOnly"
      ],
      "env": {
        "MDB_MCP_CONNECTION_STRING": "${env:MDB_MCP_CONNECTION_STRING}",
        "MDB_MCP_API_CLIENT_ID": "${env:MDB_MCP_API_CLIENT_ID}",
        "MDB_MCP_API_CLIENT_SECRET": "${env:MDB_MCP_API_CLIENT_SECRET}"
      }
    }
  }
}

Codex

~/.codex/config.toml

[mcp_servers.mongodb]
command = "npx"
args = ["-y", "mongodb-mcp-server@latest", "--readOnly"]
env_vars = ["MDB_MCP_CONNECTION_STRING", "MDB_MCP_API_CLIENT_ID", "MDB_MCP_API_CLIENT_SECRET"]

Config for other clients →

The generated command keeps --readOnly; drop it only if the agent should write.

Other servers in data

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Google

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Neon

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Redis

Lets an agent work with Redis data structures, search and vector indexes in plain language.

Sources

github.com/mongodb-js/mongodb-mcp-server