ServiceNow MCP Server

Instructions

Implementation Reference

• src/servicenow_mcp/tools/workflow_tools.py:893-963 (handler)

  The core handler function that executes the tool logic. It unwraps parameters using ReorderWorkflowActivitiesParams, authenticates, and iteratively PATCHes the 'order' field on each wf_activity record via the ServiceNow REST API to achieve reordering.

  def reorder_workflow_activities(
      auth_manager: AuthManager,
      server_config: ServerConfig,
      params: Dict[str, Any],
  ) -> Dict[str, Any]:
      """
      Reorder activities in a workflow.
      
      Args:
          auth_manager: Authentication manager
          server_config: Server configuration
          params: Parameters for reordering workflow activities
          
      Returns:
          Dict[str, Any]: Result of the reordering operation
      """
      # Unwrap parameters if needed
      params = _unwrap_params(params, ReorderWorkflowActivitiesParams)
      
      # Get the correct auth_manager and server_config
      try:
          auth_manager, server_config = _get_auth_and_config(auth_manager, server_config)
      except ValueError as e:
          logger.error(f"Error getting auth and config: {e}")
          return {"error": str(e)}
      
      workflow_id = params.get("workflow_id")
      if not workflow_id:
          return {"error": "Workflow ID is required"}
      
      activity_ids = params.get("activity_ids")
      if not activity_ids:
          return {"error": "Activity IDs are required"}
      
      # Make the API requests to update the order of each activity
      try:
          headers = auth_manager.get_headers()
          results = []
          
          for i, activity_id in enumerate(activity_ids):
              # Calculate the new order value (100, 200, 300, etc.)
              new_order = (i + 1) * 100
              
              url = f"{server_config.instance_url}/api/now/table/wf_activity/{activity_id}"
              data = {"order": new_order}
              
              try:
                  response = requests.patch(url, headers=headers, json=data)
                  response.raise_for_status()
                  
                  results.append({
                      "activity_id": activity_id,
                      "new_order": new_order,
                      "success": True,
                  })
              except requests.RequestException as e:
                  logger.error(f"Error updating activity order: {e}")
                  results.append({
                      "activity_id": activity_id,
                      "error": str(e),
                      "success": False,
                  })
          
          return {
              "message": "Activities reordered",
              "workflow_id": workflow_id,
              "results": results,
          }
      except Exception as e:
          logger.error(f"Unexpected error reordering workflow activities: {e}")
          return {"error": str(e)}

• src/servicenow_mcp/tools/workflow_tools.py:113-118 (schema)

  Pydantic BaseModel defining the input schema for the tool, validating workflow_id (str) and activity_ids (list of str). Used for parameter unwrapping and validation.

  class ReorderWorkflowActivitiesParams(BaseModel):
      """Parameters for reordering workflow activities."""
      
      workflow_id: str = Field(..., description="Workflow ID or sys_id")
      activity_ids: List[str] = Field(..., description="List of activity IDs in the desired order")

• src/servicenow_mcp/utils/tool_utils.py:567-573 (registration)

  MCP tool registration in the central tool_definitions dictionary. Maps tool name to (handler function alias, params schema, return type, description, serialization method). This is used by the MCP server to expose the tool.

  "reorder_workflow_activities": (
      reorder_workflow_activities_tool,
      ReorderWorkflowActivitiesParams,
      str,
      "Reorder activities in a workflow",
      "str",  # Tool returns simple message
  ),

• src/servicenow_mcp/utils/tool_utils.py:281-282 (registration)

  Import of the handler function aliased as reorder_workflow_activities_tool for use in tool registration.

  from servicenow_mcp.tools.workflow_tools import (
      reorder_workflow_activities as reorder_workflow_activities_tool,

• src/servicenow_mcp/tools/__init__.py:88-88 (registration)

  Re-export of the handler from workflow_tools.py in the tools package __init__, making it available for imports in tool_utils.py.

  reorder_workflow_activities,