FastMCP vs modelcontextprotocol/python-sdk

[rapelh]

FastMCP has been replaced by stuff from modelcontextprotocol/python-sdk.

Therefore I added mcp instead of FastMCP to requirements.txt.

./src/mcp_freecad/server/freecad_mcp_server.py had to be patched accordingly, in addition to adapting to a file name change of freecad_connection.py to freecad_connection_manager.py and restoring argparse options --host and --port that seem to have been available before.

--- ./src/mcp_freecad/server/freecad_mcp_server.py.orig 2025-05-16 13:01:29.955533895 -0400
+++ ./src/mcp_freecad/server/freecad_mcp_server.py 2025-05-16 18:00:58.624245709 -0400
@@ -25,8 +25,8 @@

--- FastMCP Import ---

try:

• from fastmcp import FastMCP
• from fastmcp.exceptions import FastMCPError # Use actual exception name

• from mcp.server.fastmcp import FastMCP
• from mcp.server.fastmcp.exceptions import FastMCPError # Use actual exception name
  mcp_import_error = None
  except ImportError as e:
  mcp_import_error = str(e)
  @@ -45,12 +45,12 @@

Adjust path based on actual location relative to this file

try:
# Assuming execution from workspace root or correct PYTHONPATH

• from src.mcp_freecad.client.freecad_connection import FreeCADConnection

• from src.mcp_freecad.client.freecad_connection_manager import FreeCADConnection
  FREECAD_CONNECTION_AVAILABLE = True
  except ImportError:
  try:
  # Fallback if running from within the server directory structure

•    from ...client.freecad_connection import FreeCADConnection
  

•    from ...client.freecad_connection_manager import FreeCADConnection
     FREECAD_CONNECTION_AVAILABLE = True
  

  except ImportError:
  logging.warning(
  @@ -1380,6 +1380,8 @@

  --- Argument Parsing ---

  parser = argparse.ArgumentParser(description="Advanced FreeCAD MCP Server")
  parser.add_argument("--config", default=CONFIG_PATH, help="Path to configuration file")
• parser.add_argument("--host", default="localhost", help="Host for the transport socket receiver")
• parser.add_argument("--port", type=int, default=9876, help="Port for the transport socket receiver")
  parser.add_argument("--log-host", default="localhost", help="Host for the logging socket receiver")
  parser.add_argument("--log-port", type=int, default=LOGGING_PORT, help="Port for the logging socket receiver")
  parser.add_argument("--debug", action="store_true", help="Enable debug logging")
  @@ -1464,7 +1466,7 @@

  Pass unknown arguments if necessary, depending on FastMCP's run method

  try:
  # Note: Check FastMCP documentation for how to pass extra args if needed

•    await mcp.run_stdio() # Or run_tcp, run_ws depending on desired transport
  

•    await mcp.run("stdio") # Or run_tcp, run_ws depending on desired transport
  

  except KeyboardInterrupt:
  logger.info("Server shutting down (KeyboardInterrupt)...")
  except Exception as e:

[rapelh]

freecad_mcp_server.patch.txt

Better using a patch file