MongoDB MCP Server

MongoDB over the Model Context Protocol, so an AI agent can query and reason about a real database instead of guessing at one.

3M+npm downloads since launch

1,100+GitHub stars

650K+Docker image pulls

300Knpm downloads a month

2Flavours — self-hosted and managed

01 / WHAT IT IS

MCP is the protocol that lets an assistant call tools it did not ship with. The MongoDB MCP Server exposes a database over it: schema, queries, aggregation and cluster lifecycle, all as tools an agent can pick up.

It runs in two forms. Teams that want control host the open-source server themselves; everyone else points at the remote endpoint MongoDB runs and operates for them. Claude, Cursor and Copilot all speak to it, and through Atlas Local an agent can spin up its own cluster to work against.

02 / WHAT I DID

Open-source server · hosted service infrastructure

Worked on both flavours: the open-source server teams run themselves, and the hosted one MongoDB operates. They are the same protocol surface with very different problems behind them.
For the hosted service, stood up the infrastructure and wrote the wrapper that turns the open-source server into a managed, remotely-reachable endpoint — so a user gets MCP without running, patching or scaling anything themselves.
Built the Atlas Local integration underneath both, so an agent can create and connect to a local cluster entirely on its own rather than being handed one.
The Rust proficiency that made this buildable came out of the "Learn Rust" programme I founded and ran weekly for over two years, until the whole team was proficient.

TypeScriptRustGoMCP

03 / WHERE IT SAT

Senior Software Engineer @ MongoDB

Jan 2024 — Present · Dublin, Ireland

Full history ↗

04 / WRITTEN ABOUT IT

2025-05-19MCP is just a protocol, and that's the good partmcp 2025-02-11What an agent does with a database when you let itmcp

05 / SOURCE

mongodb-js/mongodb-mcp-server ↗