Butler is the automation assistant built into Trello. It carries out actions on your behalf, following rules you define, without a single line of code.

What Butler can do

• Rules — « when a card moves to Done, tick its due date ».
• Card buttons — one click to apply several actions at once.
• Scheduled commands — « every Monday, create the weekly report card ».

The principle is always the same: a trigger (« when… ») followed by one or more actions (« then… »). You build these rules from menus, in near-plain English.

A concrete example

« When a card is given the Urgent label, move it to the top of the list and assign it to me. » Butler handles the rest, every single time.

Key takeaway: Butler automates repetitive actions using « when… then… » logic.