n-Trello's Built-In Automation Runs Butler. We Build What Happens After It.
Butler is Trello's own rule-based automation engine, built right into every board: set a trigger like a card moving to a list or a due date arriving, and Butler fires an action like moving the card, adding a label, or posting a comment. It's free on every plan, with a monthly run limit that scales with your plan tier. It can do a lot inside Trello. It can't do much of anything once a card needs to affect a system Trello doesn't touch.
How Butler actually works
You build a rule from a trigger (card moved, due date set, checklist completed, a card added to a board) and one or more actions (move the card, change a label, assign a member, post a comment, even create a new card). Trello's rule builder walks you through both halves without needing to write anything.
Beyond rules, Butler also gives you board buttons and card buttons, one-click shortcuts that run a whole sequence at once, and calendar commands that fire on a schedule rather than a trigger event.
Everything Butler does happens inside Trello's own boards. A Power-Up can extend what a Butler action touches (posting to Slack, for instance), but the rule logic itself only ever looks at Trello data to decide what to do.
Where Butler stops
Butler has no way to check a real balance in your accounting system or a status in your CRM before deciding whether to move a card. Its conditions only ever look at what's already on the board.
And every plan has a monthly cap on how many rule runs Butler will actually execute. A board that's humming along fine logically can quietly stop firing once a team's usage outgrows its tier's limit.
Where this shows up in practice
Card moves that reach outside Trello
A card hitting Done can create an invoice or update a CRM record in the same motion Butler starts, instead of stopping at the edge of the board.
Rules that check something Butler can't see
Before a card moves, we can have it check a real status or balance in another system first, something Butler's own rule builder has no way to look up on its own.
Running into Butler's run limits or its blind spots?
Tell us what the rule is actually supposed to do, and we'll build the part Butler can't reach.
Butler's handling the easy half and someone's still doing the rest by hand?
Walk us through what should happen the moment a card changes, who needs to know, what should update somewhere else entirely. Butler's a great starting point, and a limited one, and your business almost certainly has manual steps that have nothing to do with Trello at all. Those count just as much.
Let's talk