Add SSE server support with configurable settings and client integrat…

[Siim]

Add SSE server support with configurable settings and client integration

This pull request extends the Trello MCP server to run in both Claude app mode and SSE server mode, enabling integration with any MCP-compatible client, including Cursor, Visual Studio Code, and other tools.

Key Features

Dual Mode Support

• Claude App Mode (default): Seamless integration with Claude Desktop

  # Set in .env
  USE_CLAUDE_APP=true
  
  # Run with
  uv run mcp install main.py

• SSE Server Mode: Universal client support

  # Set in .env
  USE_CLAUDE_APP=false
  MCP_SERVER_PORT=8000
  MCP_SERVER_HOST=0.0.0.0
  
  # Run with
  python main.py

Client Integration Examples

• Cursor: Add to ~/.cursor/mcp.json

  {
    "mcpServers": {
      "trello": {
        "url": "http://localhost:8000/sse"
      }
    }
  }

• Python Client: Simple connectivity example

  import asyncio
  import httpx
  
  async def connect_to_mcp_server():
      url = "http://localhost:8000/sse"
      headers = {"Accept": "text/event-stream"}
      
      async with httpx.AsyncClient() as client:
          async with client.stream("GET", url, headers=headers) as response:
              # Process SSE messages...

Benefits

• Broader accessibility for Trello integration
• Configurable host/port settings
• Backward compatible (Claude app mode remains default)
• Improved documentation with examples

This enhancement maintains all existing functionality while adding new capabilities for different user environments and tooling ecosystems.

[m0xai]

Dear @Siim,

Thank you for your valuable contribution in adding SSE server support with configurable settings and client integration. This enhancement significantly advances the project’s capabilities by introducing real-time communication features.

I appreciate your efforts, especially providing good documentation with an example and look forward to collaborating further to refine this MCP Server.

Best regards,
Kerem Zopcuk (m0xai)