Which integrations are available for this server?

Provides tools for interacting with MongoDB databases (3.6+), including querying, aggregating, counting, exploring metadata, and optionally writing, updating, and deleting documents. Supports connection management and database/collection operations.

How do I use mongodb3-mcp-server?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@mongodb3-mcp-server show me all collections in the database" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

mongodb3-mcp-server

A lightweight MCP (Model Context Protocol) server for MongoDB, compatible with MongoDB 3.6.18+.

Uses mongodb driver v4.x which officially supports MongoDB 3.6+.

Quick Start

# Install dependencies
npm install

# Build
npm run build

# Run (stdio transport)
MDB_MCP_CONNECTION_STRING="mongodb://localhost:27017" node dist/index.js

MCP Client Configuration

{
  "mcpServers": {
    "MongoDB": {
      "command": "node",
      "args": ["/path/to/mongodb3-mcp-server/dist/index.js"],
      "env": {
        "MDB_MCP_CONNECTION_STRING": "mongodb://localhost:27017"
      }
    }
  }
}

Enable Write Mode

By default, the server runs in read-only mode for safety. To enable write/delete operations:

{
  "mcpServers": {
    "MongoDB": {
      "command": "node",
      "args": ["/path/to/mongodb3-mcp-server/dist/index.js"],
      "env": {
        "MDB_MCP_CONNECTION_STRING": "mongodb://localhost:27017",
        "MDB_MCP_WRITABLE": "true"
      }
    }
  }
}

Pass --writable CLI flag as an alternative.

Kiro MCP Configuration

Add the following to your Kiro MCP config (~/.kiro/settings/mcp.json):

{
  "mcpServers": {
    "dev-mongodb3": {
      "command": "npx",
      "args": ["mongodb3-mcp-server"],
      "env": {
        "MDB_MCP_WRITABLE": "false",
        "MDB_MCP_CONNECTION_STRING": "mongodb://root:root@localhost:17017/admin?authSource=admin"
      },
      "disabled": true
    }
  }
}

Configuration

Environment Variable / CLI Flag	Default	Description
`MDB_MCP_CONNECTION_STRING` / `--connectionString`	-	MongoDB connection string
`MDB_MCP_WRITABLE` / `--writable`	`false` (read-only)	Set `MDB_MCP_WRITABLE=true` or pass `--writable` to enable write operations
`MDB_MCP_MAX_DOCUMENTS_PER_QUERY` / `--maxDocumentsPerQuery`	`100`	Max documents per query

Supported Tools (23 tools)

Connection (2)

Tool	Description
`connect`	Connect to a MongoDB instance
`switch-connection`	Switch to a different connection

Read (5)

Tool	Description
`find`	Query documents in a collection
`aggregate`	Run aggregation pipeline on a collection
`aggregate-db`	Run aggregation pipeline at database level
`count`	Count documents with optional filter
`explain`	Get execution plan for find/aggregate/count

Metadata (7)

Tool	Description
`list-databases`	List all database names (uses `nameOnly` for efficiency)
`list-collections`	List collections in a database
`collection-indexes`	List indexes on a collection
`collection-schema`	Infer schema by sampling documents
`collection-storage-size`	Get collection storage size
`db-stats`	Get database statistics
`mongodb-logs`	Get recent mongod log entries

Write (requires `--writable` or `MDB_MCP_WRITABLE=true`) (3)

Tool	Description
`insert-many`	Insert documents into a collection
`update-many`	Update documents matching a filter
`delete-many`	Delete documents matching a filter

Manage (requires `--writable` or `MDB_MCP_WRITABLE=true`) (6)

Tool	Description
`create-collection`	Create a new collection
`drop-collection`	Drop a collection
`drop-database`	Drop a database
`rename-collection`	Rename a collection
`create-index`	Create an index
`drop-index`	Drop an index

Resources

Resource	URI	Description
`config`	`config://config`	Server configuration (redacted)

MongoDB 3.6 Compatibility

This server uses mongodb driver v4.17.x which officially supports MongoDB 3.6+. All tools use commands and operations available in MongoDB 3.6:

find, aggregate, count — core query operations
$sample aggregation stage for schema inference
collStats, dbStats, getLog admin commands
createIndexes, dropIndexes index management
listDatabases, listCollections metadata commands
insert, update, delete write operations

No features requiring MongoDB 4.0+ (like transactions or $merge) are used.

This server cannot be installed

A

license - permissive license

-

quality - not tested

C

maintenance

How are these scores calculated?

Resources

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Looking for Admin?

If you are the server author, to access and configure the admin panel.

mongodb3-mcp-server

mongodb3-mcp-server

Quick Start

MCP Client Configuration

Enable Write Mode

Kiro MCP Configuration

Configuration

Supported Tools (23 tools)

Connection (2)

Read (5)

Metadata (7)

Write (requires `--writable` or `MDB_MCP_WRITABLE=true`) (3)

Manage (requires `--writable` or `MDB_MCP_WRITABLE=true`) (6)

Resources

MongoDB 3.6 Compatibility

Resources

Looking for Admin?

Latest Blog Posts

MCP directory API

mongodb3-mcp-server

Quick Start

MCP Client Configuration

Enable Write Mode

Kiro MCP Configuration

Configuration

Supported Tools (23 tools)

Connection (2)

Read (5)

Metadata (7)

Write (requires --writable or MDB_MCP_WRITABLE=true) (3)

Manage (requires --writable or MDB_MCP_WRITABLE=true) (6)

Resources

MongoDB 3.6 Compatibility

Resources

Looking for Admin?

Latest Blog Posts

MCP directory API

Write (requires `--writable` or `MDB_MCP_WRITABLE=true`) (3)

Manage (requires `--writable` or `MDB_MCP_WRITABLE=true`) (6)