fix(mcp): Stop adding the prompt name to arguments

sentry_sdk/integrations/mcp.py

@@ -286,7 +286,6 @@ def _extract_handler_data_from_params(
     elif handler_type == "prompt":
         handler_name = getattr(params, "name", "unknown")
         arguments = getattr(params, "arguments", None) or {}
-        arguments = {"name": handler_name, **arguments}
     else:  # resource
         handler_name = str(getattr(params, "uri", "unknown"))
         arguments = {}
@@ -333,8 +332,6 @@ def _extract_handler_data_from_args(
         elif original_kwargs.get("arguments"):
             arguments = original_kwargs["arguments"]
 
-        arguments = {"name": handler_name, **(arguments or {})}
-
     else:  # resource
         handler_name = "unknown"
         if original_args:

tests/integrations/mcp/test_mcp.py

@@ -777,7 +777,6 @@ async def test_prompt(name, arguments):
     assert data[SPANDATA.MCP_METHOD_NAME] == "prompts/get"
     assert data[SPANDATA.MCP_TRANSPORT] == "stdio"
     assert data[SPANDATA.MCP_REQUEST_ID] == "req-prompt"
-    assert data["mcp.request.argument.name"] == "code_help"
     assert data["mcp.request.argument.language"] == "python"
 
     # Message count is always captured