mcp-mmolony-waf

db-mattmolony/mcp-mmolony-waf

3.1

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This document provides a comprehensive guide on setting up and deploying a custom Model Context Protocol (MCP) server on Databricks Apps.

Example - custom MCP server on Databricks Apps

This example shows how to create and launch a custom agent on Databricks Apps. Please note that this example doesn't use any Databricks SDK, and is independent of the mcp package in the root dir of this repo.

Prerequisites

  • Databricks CLI installed and configured
  • uv

Local development

  • run uv sync:
uv sync
  • start the server locally. Changes will trigger a reload:
uv run custom-server

This will start the server on http://localhost:8000

Deploying a custom MCP server on Databricks Apps

There are two ways to deploy the server on Databricks Apps: using the databricks apps CLI or using the databricks bundle CLI. Depending on your preference, you can choose either method.

Both approaches require first configuring Databricks authentication:

export DATABRICKS_CONFIG_PROFILE=<your-profile-name> # e.g. custom-mcp-server
databricks auth login --profile "$DATABRICKS_CONFIG_PROFILE"

Using databricks apps CLI

To deploy the server using the databricks apps CLI, follow these steps:

Create a Databricks app to host your MCP server:

databricks apps create mcp-custom-server

Upload the source code to Databricks and deploy the app:

DATABRICKS_USERNAME=$(databricks current-user me | jq -r .userName)
databricks sync . "/Users/$DATABRICKS_USERNAME/my-mcp-server"
databricks apps deploy mcp-custom-server --source-code-path "/Workspace/Users/$DATABRICKS_USERNAME/my-mcp-server"

Using databricks bundle CLI

To deploy the server using the databricks bundle CLI, follow these steps

Update the app.yaml file in this directory to use the following command:

command: ["uvicorn", "custom_server.app:app"]
  • In this directory, run the following command to deploy and run the MCP server on Databricks Apps:
uv build --wheel
databricks bundle deploy
databricks bundle run custom-mcp-server

Connecting to the MCP server

To connect to the MCP server, use the Streamable HTTP transport with the following URL:

https://your-app-url.usually.ends.with.databricksapps.com/mcp/

For authentication, you can use the Bearer token from your Databricks profile. You can get the token by running the following command:

databricks auth token -p <name-of-your-profile>

Please note that the URL should end with /mcp/ (including the trailing slash), as this is required for the server to work correctly.