MCP MongoDB Server

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A Model Context Protocol server that provides access to MongoDB databases. This server enables LLMs to inspect collection schemas and execute read-only queries.

Demo

Features

Resources

List and access collections via mongodb:// URIs
Each collection has a name, description and schema
JSON mime type for schema access

Tools

query
- Execute read-only MongoDB queries against the connected database
- Input: query (object): The MongoDB query to execute
- All queries are executed with read-only permissions
aggregate
- Execute read-only MongoDB queries against the connected database
- Input: aggregate (object): The MongoDB query to execute
- All queries are executed with read-only permissions

Prompts

query - Provide insights about the collection's structure, data types, and basic statistics
- Input: collection (string): The name of the collection to analyze
- Output: text (string): A summary of the collection's structure, data types, and basic statistics
aggregate - Provide insights about the collection's structure, data types, and basic statistics
- Input: collection (string): The name of the collection to analyze
- Output: text (string): A summary of the collection's structure, data types, and basic statistics

Development

Install dependencies:

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch

Installation for Development

Using Claude Desktop

To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json

On Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mongodb": {
      "command": "node",
      "args": [
        "~/mcp-mongo-server/build/index.js",
        "mongodb://muhammed:[email protected]/namespace"
      ]
    },
  }
}

Debugging

Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the MCP Inspector, which is available as a package script:

npm run inspector

The Inspector will provide a URL to access debugging tools in your browser.

Components

Resources

The server provides schema information for each collection in the database:

Collection Schemas (mongodb://<host>/<collection>/schema)
- JSON schema information for each collection
- Includes field names and data types
- Automatically inferred from collection documents

Usage with Claude Desktop

To use this server with the Claude Desktop app, add the following configuration to the "mcpServers" section of your claude_desktop_config.json:

{
  "mcpServers": {
    "mongodb": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-mongo-server",
        "mongodb://muhammed:[email protected]/sample_namespace"
      ]
    }
  }
}

Installing via Smithery

To install MCP MongoDB Server for Claude Desktop automatically via Smithery:

npx @smithery/cli install mcp-mongo-server --client claude

Installing via mcp-get

You can install this package using mcp-get:

npx @michaellatman/mcp-get@latest install mcp-mongo-server

Replace /sample_namespace with your database name.

License

This MCP server is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.

MCP MongoDB Server