Trigger: Subtask Created

The Subtask created trigger fires an automation whenever a subtask (an item with a parent task) is added inside a board in the Projects module. It's the subtask-only version of the generic item-created trigger — it never reacts to top-level tasks.

When to use it

• Automatically notify the parent task's owner whenever someone adds a step.
• Auto-clone a standard checklist (create fixed subtasks) whenever a subtask opens on a certain type of board.
• Track how many steps get created per task over time.

Trigger settings

• Board: restrict to one board. Empty = any board in the workspace.
• Parent task: restrict to subtasks created under one specific task (handy for a recurring "master" task). Empty = any.

Available variables

• $record.object_type, $record.object_id, $record.workspace_id
• $trigger.parent_item_id — the parent task's ID
• $trigger.board_id — the board's ID

Steps

1. Open Automations from the side menu and start a new one (or edit an existing one).
2. Drag the "Subtask created" block from the Boards section of the block panel.
3. Optionally set the Board and/or Parent task filters.
4. Connect the trigger to an action, e.g. "Notify the team" or "Log activity".
5. Flip the Active switch and save.

Example

A "Client onboarding" board has a "New client" task with a subtask per step (KYC, contract, system setup). Set Parent task = New client, then add a "Notify the team" action: "A new onboarding step was added, check the board." The team finds out without babysitting the board.

Tips

• Pair it with a condition node if you only care about certain active-project boards.
• This trigger has no live conversation/contact picker for test runs — just activate the automation and create a test subtask to see it fire.