Bug Description

The server crashes immediately on startup with an AttributeError because notification_options=None is passed to server.get_capabilities(), but the current MCP SDK (mcp package) expects a NotificationOptions instance, not None.

Error

AttributeError: 'NoneType' object has no attribute 'tools_changed'

Full traceback:

File "servicenow_mcp/server.py", line 132, in run
    capabilities=self.server.get_capabilities(
        notification_options=None,  # type: ignore[arg-type]
        experimental_capabilities={},
    ),
File "mcp/server/lowlevel/server.py", line 217, in get_capabilities
    tools_capability = types.ToolsCapability(listChanged=notification_options.tools_changed)
                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'tools_changed'

Root Cause

In src/servicenow_mcp/server.py line 132, notification_options=None is passed explicitly. The MCP SDK's get_capabilities() method dereferences this parameter without a None check (it expects NotificationOptions).

Fix

Replace None with NotificationOptions() and add the missing import:

from mcp.server.lowlevel.server import NotificationOptions

capabilities=self.server.get_capabilities(
    notification_options=NotificationOptions(),
    experimental_capabilities={},
),

Environment

• Python 3.13
• Latest mcp SDK (installed via uvx)
• Linux