ServiceNow MCP Server

Instructions

Implementation Reference

• src/servicenow_mcp/tools/workflow_tools.py:648-701 (handler)

  The core handler function that performs the deactivation by sending a PATCH request to the ServiceNow wf_workflow table API endpoint to set active=false.

  def deactivate_workflow(
      auth_manager: AuthManager,
      server_config: ServerConfig,
      params: Dict[str, Any],
  ) -> Dict[str, Any]:
      """
      Deactivate a workflow in ServiceNow.
      
      Args:
          auth_manager: Authentication manager
          server_config: Server configuration
          params: Parameters for deactivating a workflow
          
      Returns:
          Dict[str, Any]: Deactivated workflow details
      """
      # Unwrap parameters if needed
      params = _unwrap_params(params, DeactivateWorkflowParams)
      
      # 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"}
      
      # Prepare data for the API request
      data = {
          "active": "false",
      }
      
      # Make the API request
      try:
          headers = auth_manager.get_headers()
          url = f"{server_config.instance_url}/api/now/table/wf_workflow/{workflow_id}"
          
          response = requests.patch(url, headers=headers, json=data)
          response.raise_for_status()
          
          result = response.json()
          return {
              "workflow": result.get("result", {}),
              "message": "Workflow deactivated successfully",
          }
      except requests.RequestException as e:
          logger.error(f"Error deactivating workflow: {e}")
          return {"error": str(e)}
      except Exception as e:
          logger.error(f"Unexpected error deactivating workflow: {e}")
          return {"error": str(e)}

• src/servicenow_mcp/tools/workflow_tools.py:82-86 (schema)

  Pydantic BaseModel defining the input schema for the tool, requiring a workflow_id.

  class DeactivateWorkflowParams(BaseModel):
      """Parameters for deactivating a workflow."""
      
      workflow_id: str = Field(..., description="Workflow ID or sys_id")

• src/servicenow_mcp/utils/tool_utils.py:596-602 (registration)

  Registration of the tool in the central get_tool_definitions() dictionary, associating the name with the imported handler function, schema, return type, description, and serialization method.

  "deactivate_workflow": (
      deactivate_workflow_tool,
      DeactivateWorkflowParams,
      str,
      "Deactivate a workflow in ServiceNow",
      "str",  # Tool returns simple message
  ),

• src/servicenow_mcp/tools/__init__.py:83-83 (registration)

  Import of the deactivate_workflow handler into the tools package namespace for exposure.

  deactivate_workflow,

• src/servicenow_mcp/tools/workflow_tools.py:138-181 (helper)

  Helper function used by the handler to normalize auth_manager and server_config arguments, handling potential order swaps.

  def _get_auth_and_config(
      auth_manager_or_config: Union[AuthManager, ServerConfig],
      server_config_or_auth: Union[ServerConfig, AuthManager],
  ) -> tuple[AuthManager, ServerConfig]:
      """
      Get the correct auth_manager and server_config objects.
      
      This function handles the case where the parameters might be swapped.
      
      Args:
          auth_manager_or_config: Either an AuthManager or a ServerConfig.
          server_config_or_auth: Either a ServerConfig or an AuthManager.
          
      Returns:
          tuple[AuthManager, ServerConfig]: The correct auth_manager and server_config.
          
      Raises:
          ValueError: If the parameters are not of the expected types.
      """
      # Check if the parameters are in the correct order
      if isinstance(auth_manager_or_config, AuthManager) and isinstance(server_config_or_auth, ServerConfig):
          return auth_manager_or_config, server_config_or_auth
      
      # Check if the parameters are swapped
      if isinstance(auth_manager_or_config, ServerConfig) and isinstance(server_config_or_auth, AuthManager):
          return server_config_or_auth, auth_manager_or_config
      
      # If we get here, at least one of the parameters is not of the expected type
      if hasattr(auth_manager_or_config, "get_headers"):
          auth_manager = auth_manager_or_config
      elif hasattr(server_config_or_auth, "get_headers"):
          auth_manager = server_config_or_auth
      else:
          raise ValueError("Cannot find get_headers method in either auth_manager or server_config")
      
      if hasattr(auth_manager_or_config, "instance_url"):
          server_config = auth_manager_or_config
      elif hasattr(server_config_or_auth, "instance_url"):
          server_config = server_config_or_auth
      else:
          raise ValueError("Cannot find instance_url attribute in either auth_manager or server_config")
      
      return auth_manager, server_config