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A minimal Python MCP server built with the official MCP Python SDK and prepared for deployment on Render from GitHub.

Files

• server.py: the MCP server entrypoint
• requirements.txt: Python dependencies
• render.yaml: Render deployment blueprint

What this server does

This starter server exposes:

• echo: returns the text you send it
• add_numbers: adds two numbers
• list_workspace_files: lists files inside the app directory
• read_text_file: reads a UTF-8 text file
• read_json_file: reads and parses a JSON file

It also exposes a resource at workspace://server-info.

Run locally

1. Install dependencies:

   pip install -r requirements.txt
   

2. Run in local stdio mode:

   python server.py
   

3. Run in MCP dev mode:

   uv run mcp dev server.py
   

4. Run in HTTP mode locally:

   MCP_TRANSPORT=streamable-http python server.py
   

By default, local HTTP mode listens on 127.0.0.1:8000, and the MCP endpoint is:

http://127.0.0.1:8000/mcp

Deploy on Render

Option 1: Use render.yaml

1. Push these files to your GitHub repository.
2. In Render, create a new Blueprint service from that repository.
3. Render will read render.yaml and create the web service automatically.

Option 2: Manual Web Service setup

If you do not want to use the blueprint file, create a Render Web Service with:

• Build Command:

  pip install -r requirements.txt
  

• Start Command:

  python server.py
  

• Environment Variable:

  MCP_TRANSPORT=streamable-http
  

Render endpoint

After deployment, the MCP HTTP endpoint is:

https://YOUR-RENDER-SERVICE.onrender.com/mcp

Render supplies the PORT environment variable automatically. This server is already set up to bind to that port and to host 0.0.0.0 when running on Render.

Notes

• stdio mode is for local MCP usage, not for Render web deployment.
• streamable-http mode is the correct mode for Render.
• If you rename the service, you do not need to change the code.