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The MongoDB MCP server lets agents query databases, inspect schemas, and manage collections or indexes. Use a dedicated Atlas database user and allow network access from the environment that runs the MCP server.

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Prerequisites

  • A TrueFoundry account with permission to add MCP servers.
  • A MongoDB Atlas project and cluster.

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Create a Connection String

In Atlas, open Database > Connect > Drivers and copy the connection string. Create a dedicated database user under Database Access and grant the minimum role, such as read-only access for exploration workflows.

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Run and Register the MCP Server

Deploy the MongoDB MCP server on TrueFoundry or your own infrastructure with the connection string configured as MDB_MCP_CONNECTION_STRING. Then add the resulting MCP URL in MCP Gateway as a remote MCP server. If you run a hosted stdio version, configure MDB_MCP_CONNECTION_STRING as an environment variable and keep credentials in a secret store.

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Configure Atlas Network Access

Atlas must allow traffic from wherever the MCP server runs. Add the egress IP of your TrueFoundry deployment or hosting environment under Security > Network Access in Atlas.

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Security Notes

Use a dedicated database user, avoid embedding personal credentials in the connection string, and expose write-capable MongoDB tools only through curated virtual MCP servers.