FastMCP Demo Application

This is a simple demonstration application using the FastMCP framework.

Sample ADK agent to call this MCP server is avilable in this repo: https://github.com/gitrey/adk-fastmcp

Prerequisites

Before deploying, ensure you have the following:

1. Google Cloud SDK (gcloud): Installed and authenticated.
   • Install: https://cloud.google.com/sdk/docs/install
   • Login: gcloud auth login
   • Set Project: gcloud config set project YOUR_PROJECT_ID (Replace YOUR_PROJECT_ID with your actual Google Cloud project ID)
2. Enabled APIs: Cloud Run API and Cloud Build API must be enabled for your project.

   gcloud services enable run.googleapis.com cloudbuild.googleapis.com

3. Billing Enabled: Your Google Cloud project must have billing enabled.

Project Structure

Ensure your project has the following files in the root directory:

• server.py: Your main application code using FastMCP.
• requirements.txt: Lists the Python dependencies.

  fastmcp
  asyncio

• Procfile: Tells Cloud Run how to start your web server.

  web: python server.py

  (Note: This assumes your FastMCP instance is named mcp within your server.py file. Adjust server:mcp if your filename or instance name is different.)

Deployment to Cloud Run (from Source)

1. Navigate to the project directory: Open your terminal and change to the directory containing server.py, requirements.txt, and Procfile.

   cd ~/fastmcp-demo

2. Run the deployment command:

   gcloud run deploy fastmcp-demo \
       --source . \
       --region YOUR_REGION

   • Replace fastmcp-demo with your desired service name.
   • Replace YOUR_REGION with the Google Cloud region you want to deploy to (e.g., us-central1, europe-west1).
   • The --allow-unauthenticated flag makes the service publicly accessible. Remove this flag if you want to manage access using IAM.

3. Test Your Service: Once the deployment is complete, gcloud will output the URL of your deployed service.

   Install cmcp

   pip install cmcp

   List available tools:

   cmcp https://fastmcp-demo-658000000000.us-central1.run.app tools/list 

   Output:

   {   
       "meta": null,
       "nextCursor": null,
       "tools": [
       {
           "name": "add",
           "description": "Add two numbers",
           "inputSchema": {
               "properties": {
               "a": {
                   "title": "A",
                   "type": "integer"
               },
               "b": {
                   "title": "B",
                   "type": "integer"
               }
               },
               "required": [
                   "a",
                   "b"
               ],
                   "title": "addArguments",
                   "type": "object"
               }
       }
   ]}

   Call the tool:

   cmcp https://fastmcp-demo-658000000000.us-central1.run.app tools/call -d '{"name": "add", "arguments": {"a": 1, "b": 2}}'

   Output:

   {
       "meta": null,
       "content": [
           {
               "type": "text",
               "text": "3",
               "annotations": null
           }
       ],
       "isError": false
   }