An MCP server implementation that integrates Couchbase as a data source to Claude and other MCP Clients

• Get a list of all the scopes and collections in the specified bucket in a Couchbase cluster
• Get the structure for a collection in a Couchbase cluster
• Run a SQL++ query in a Couchbase cluster

• Python 3.10 or higher.
• A running Couchbase cluster. The easiest way to get started is to use the Couchbase Cloud free tier.
• uv installed to run the server.
• An MCP client such as Claude Desktop installed to connect the server to Claude. The instructions are provided for Claude Desktop and Cursor. Other MCP clients could be used as well.

Clone the repository to your local machine.

git clone https://github.com/Couchbase-Ecosystem/mcp-server-couchbase.git

1. The MCP server can now be added to Claude Desktop by editing the configuration file. More detailed instructions can be found on the MCP quickstart guide.

   • On Mac, the configuration file is located at ~/Library/Application Support/Claude/claude_desktop_config.json
   • On Windows, the configuration file is located at %APPDATA%\Claude\claude_desktop_config.json

   Open the configuration file and add the following configuration to the mcpServers section:

     "mcpServers": {
       "couchbase": {
         "command": "uv",
         "args": [
           "--directory",
           "<path/to/couchbase-mcp-server-repo>",
           "run",
           "src/mcp_server.py"
         ],
         "env": {
           "CB_CONNECTION_STRING": "couchbases://connection-string",
           "CB_USERNAME": "username",
           "CB_PASSWORD": "password",
           "CB_BUCKET_NAME": "bucket_name"
         }
       }
     }

   The server can be configured using environment variables. The following variables are supported:

   • CB_CONNECTION_STRING: The connection string to the Couchbase cluster
   • CB_USERNAME: The username with access to the bucket to use to connect
   • CB_PASSWORD: The password for the username to connect
   • CB_BUCKET_NAME: The name of the bucket that the server will access
   • <path/to/couchbase-mcp-server-repo> should be the path to the cloned repository on your local machine.

2. Restart Claude Desktop to apply the changes.

3. You can now use the server in Claude Desktop to run queries on the Couchbase cluster using natural language.

To use this MCP server with Cursor:

1. Install Cursor on your machine.

2. In Cursor, go to Cursor > Cursor Settings > MCP > Add a new global MCP server. Also, checkout the docs on setting up MCP server configuration from Cursor.

3. Specify the same configuration as above. You may need to add the server configuration under a parent key of mcpServers like this below.

{
  "mcpServers": {
    "couchbase": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/couchbase-mcp-server-repo/",
        "run",
        "src/mcp_server.py"
      ],
      "env": {
        "CB_CONNECTION_STRING": "couchbases://connection-string",
        "CB_USERNAME": "username",
        "CB_PASSWORD": "password",
        "CB_BUCKET_NAME": "bucket_name"
      }
    }
  }
}

4. Save the configuration.

5. You will see couchbase as an added server in MCP list. Refresh to see if server is enabled.

6. You can now use the Couchbase MCP server in Cursor to query your Couchbase cluster using natural language.

For more details about MCP integration with Cursor, refer to the official Cursor MCP documentation.

Common issues to check:

• Ensure the path to your MCP server repository is correct in the configuration.
• Verify that your Couchbase connection string, database username, password and bucket name are correct.
• If using Couchbase Capella, ensure that the cluster is accessible from the machine where the MCP server is running.
• Check that the database user has proper permissions to access the specified bucket.
• Confirm that the uv package manager is properly installed and accessible. You may need to provide absolute path to uv in the command field in the configuration.
• Check the logs for any errors or warnings that may indicate issues with the MCP server. The server logs are under the name, mcp-server-couchbase.log.

The logs for Claude Desktop can be found in the following locations:

• MacOS: ~/Library/Logs/Claude
• Windows: %APPDATA%\Claude\Logs

The logs can be used to diagnose connection issues or other problems with your MCP server configuration. For more details, refer to the official documentation.

In the bottom panel of Cursor, click on "Output" and select "Cursor MCP" from the dropdown menu to view server logs. This can help diagnose connection issues or other problems with your MCP server configuration.