MongoDB

MongoDB is an MCP server that provides AI assistants with read-only access to MongoDB databases through standardized Model Context Protocol tools and resources. It connects directly to MongoDB instances using a standard connection string, allowing data engineers, analysts, and developers to explore and query NoSQL datasets safely. The server enables users to list available databases and collections, automatically infer schema structures from document samples, and execute detailed queries using filtering, projection, sorting, and pagination. Users can run full-text searches against indexed collections, perform geospatial queries using coordinate polygons or intersection points, and execute complex aggregation pipelines that are validated to prevent accidental write operations. Additionally, the server facilitates performance optimization by retrieving collection statistics, index details, and query execution plans. Results can be converted into JSON or CSV formats, making database contents accessible to conversational models without compromising data safety or modifying records.

Category: Databases & Data Stores

Tags: database, mongodb, nosql, query

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How to install and configure MongoDB

Follow these steps to set up and configure the MongoDB MCP server: 1. Clone the repository and navigate into the project directory. 2. Install dependencies by running npm install. 3. Build the server using npm run build (or use npm run watch for development). 4. Open your Claude Desktop configuration file (~/Library/Application Support/Claude/claude_desktop_config.json on macOS or %APPDATA%/Claude/claude_desktop_config.json on Windows). 5. Add the server entry under mcpServers: json { "mcpServers": { "mongodb": { "command": "/path/to/mongodb-server/build/index.js", "env": { "MONGODB_URI": "mongodb://username:password@hostname:port/database", "MONGODB_DEFAULT_DATABASE": "your_default_db" } } } } 6. Replace the path and MONGODB_URI string with your actual local file path and database credentials, then restart Claude Desktop.

What you can do with MongoDB

• Explore collections and infer document schema structures automatically to understand unstructured or semi-structured data shapes without manual inspection. - Execute read-only aggregation pipelines and complex queries to filter, sort, and extract specific records for analysis. - Perform geospatial and full-text searches on indexed collections to locate location-based entries or keyword-specific records. - Inspect query execution plans and index statistics to diagnose slow-running operations and optimize overall database performance. - Export targeted query results into standard CSV or JSON formats for downstream reporting and external visualization workflows.

Key facts

• Open Source
• https://github.com/jonfreeland/mongodb-mcp
• Databases & Data Stores
• database, mongodb, nosql, query

Part of MCP Servers

What is the MongoDB MCP Server?

The MongoDB MCP Server is an open-source Model Context Protocol server that grants AI assistants secure, read-only access to MongoDB instances. It provides tools to inspect database collections, infer document schemas, run queries, and evaluate aggregation pipelines without risking unexpected data modifications.

Can this MCP server perform write operations on MongoDB?

No. The server is designed strictly for read-only access. It includes safety validation to block write operations within aggregation pipelines, and it is recommended to connect using MongoDB database credentials that have read-only privileges assigned.

Which MCP clients are compatible with this server?

The server can be integrated with Claude Desktop by configuring its JSON configuration file, with Claude Web using the MCP Chrome extension or Cline, and directly with Claude Code via its command-line interface tool registration commands.

How do I debug connection issues with the server?

Because Model Context Protocol servers communicate via stdio, you can debug operations using the MCP Inspector tool. Run npm run inspector in the server repository, which outputs a local browser URL with visual inspection and debugging utilities.

Is the MongoDB MCP Server open source?

Yes, this server is an open-source project available on GitHub, allowing developers to inspect the source code, build it locally with Node.js, and customize tools according to their specific database inspection needs.