Put an AI agent to work inside Trello
Connect Trello in one click and delegate the busywork: an autonomous agent that files incoming requests as cards, labels and assigns them with judgment, keeps boards clean, and turns your boards into action across the rest of your stack. You set the autonomy, it does the work.
4-day trial · Cancel anytime
Fleece AI connects to Trello through managed OAuth and lets autonomous agents create and update cards, move them across lists, apply labels, set due dates, assign members, and check off checklist items. Agents combine Trello with 3,000+ other apps — Gmail, Slack, Notion, Google Drive — so an email or a message becomes a well-formed card, and a board can keep itself clean, under the approval rules you set.
At a glance
| Category | Productivity |
|---|---|
| Availability | Starter plan and up — included in the 4-day trial |
| Connects to | 3,000+ apps via managed OAuth |
| Setup | Connect your tools — no code required |
| Autonomy | Suggest-only to fully autonomous, with approval gates |
| Pricing | 4-day trial (card required, no charge today), then paid plans |
By Loïc Jané · Updated June 26, 2026
What a Fleece agent does with Trello
Trello organizes work as boards, lists, and cards. Each card carries a description, labels, checklists, a due date, members, attachments, and comments, and work moves from list to list as it progresses. The friction shows up as boards grow: cards land in the wrong list, due dates slip past unnoticed, stale cards pile up, and requests that arrive by email or Slack never make it onto the board at all. A Fleece agent sits on top of your boards, reads the actual content of cards, and acts — creating and moving cards, applying labels, assigning members, setting due dates, and ticking checklist items — according to instructions you give it in plain language.
Under the hood, the connection runs through managed OAuth — you authorize Trello once, and Fleece handles tokens, scopes, and refresh securely. The agent can create cards, update titles and descriptions, move cards between lists, add and check checklist items, apply and remove labels, set and change due dates, assign and unassign members, post comments, and read board and card activity. Event triggers let it react in real time when a card is created, moved, assigned, or when a due date approaches — no polling, no delay — and it can work alongside the power-ups your team already relies on.
What makes this different from Butler, Trello's native automation, is judgment. Butler runs rule-based commands — buttons, card, board, calendar, and due-date rules that match a fixed trigger to a fixed action. An agent reads the card's description and comments, decides what the card is actually about, writes the label, assignment, or reply a person would, and coordinates other tools to finish the job. And because Fleece agents work as a hierarchy — a lead agent delegating to specialized child agents — one Trello-facing agent can hand research, drafting, or reporting to another agent and post the result back on the card.
What the agent can do in Trello
Card intake and triage
Files incoming requests as cards in the right list, writes a clean title and description, and assigns a member — from email, Slack, or a form.
Judgment-based labeling
Reads the content of a card and applies the labels a person would, not brittle keyword rules — then routes it to the correct list.
Board hygiene
Nudges owners on stale cards, follows up on approaching and overdue due dates, and flags cards left with no member or no checklist progress.
Editorial calendar ops
Runs a content calendar board — scheduling cards, moving them through stages, and ticking checklist items as each piece of work completes.
Real-time triggers
Reacts the moment a card is created, moved between lists, assigned, or a due date nears, through event-based triggers rather than polling.
Approval gates
Anything sensitive — archiving cards, bulk moves, external-facing comments — pauses for your one-click sign-off before it happens.
Automations teams run on Trello
These are concrete setups you can describe to a Fleece agent in plain language. Each one combines Trello with other connected apps.
Support and ops: card intake that sorts itself
When a request lands via Gmail or Slack, the agent creates a Trello card in the right list, writes a clean title and description, applies labels based on what the request is about, sets a due date, and assigns a member. It attaches the source email or Slack thread to the card so the context travels with the work. Nothing gets lost between the inbox and the board.
Board hygiene: no more stale cards
Each morning the agent scans your boards for cards that have not moved in a week, cards past their due date, and cards with no member, then nudges the owners in Slack with a direct link. It ticks off checklist items that other tools have already completed and comments on cards where a linked Google Drive document has changed, so the board reflects reality without anyone tidying it by hand.
Content and editorial calendar operations
On a content calendar board, the agent moves cards through Draft, Review, and Scheduled as work completes, sets due dates from the publishing plan, and creates cards for new topics pulled from a Notion database. When a card reaches Scheduled, it posts the summary and the go-live date to Slack so the whole team can see what is shipping and when.
Weekly board digest to the team
Every Friday the agent reads all your boards — cards completed this week, cards slipping, checklist completion, and load per member — and posts a concise digest to Slack, then files the same summary as a Notion page for the record. The status update writes itself, and the history is searchable later.
How to connect Trello to Fleece AI
Create your Fleece account
Sign up and start the 4-day trial. Your Trello agent, its flows, and every other integration live together in one workspace.
Connect Trello via managed OAuth
Pick Trello from the integrations catalog and authorize it in one click. Fleece manages tokens and scopes for you; you can revoke access at any time from Trello or from Fleece.
Describe the job in plain language
Create an agent and tell it what to watch and what to do — "file new #requests as cards in Intake, label them, and nudge owners on overdue cards". No flowchart building required.
Set autonomy and approval gates
Choose what the agent may do on its own and what waits for your sign-off. Sensitive actions like archiving or bulk moves pause for one-click approval.
Run it on triggers or a schedule
Let the agent react to Trello card events in real time, or schedule recurring flows — morning board hygiene, Friday digests — that run without you.
Trello works better with the rest of your stack
Trello automations get powerful when they cross app boundaries. Pair Trello with Gmail to turn incoming requests into well-formed cards, with Slack to nudge owners on stale or overdue cards, with Notion to file board digests and pull new card topics, or with Google Drive to attach and track linked documents — all through the same agent, all under the same approval rules. Fleece connects to 3,000+ apps, so the stack you already use is almost certainly covered.
Frequently asked questions
Only if you allow it. You set approval gates per agent: routine actions like moving a card to the right list or applying a label can run automatically, while sensitive ones — archiving cards, bulk moves, external-facing comments — pause for your one-click sign-off. You choose the autonomy level, and you can tighten it at any time.
The connection uses managed OAuth: you authorize Trello once through the official consent screen, and tokens are stored and refreshed securely — you never paste API keys. Access is scoped to the boards and actions you grant, you can revoke it from either side at any time, and security-relevant actions are recorded in an audit log.
Yes. Event triggers fire the moment a card is created, moved between lists, assigned, or a due date approaches on a board the agent watches, so follow-ups happen in seconds. You can combine real-time triggers with scheduled flows — for example instant card intake plus a Friday board digest.
Butler runs fixed rule-based commands — buttons, card, board, and due-date rules that match a trigger to a set action. A Fleece agent reads the actual content of a card, decides what it is about, writes the label, comment, or assignment a person would, and acts across 3,000+ other apps. Rules automate patterns; agents handle the judgment in between.
Trello is part of the Starter tier, so it is available on every plan — including during the 4-day trial. Higher plans widen the catalog around it: about 20 essential apps on Starter, 1,000+ on Pro, and the full 3,000+ catalog on Business.
Yes — that's the core design. One agent can create Trello cards from Gmail, apply labels, nudge owners in Slack, and file a summary in Notion in a single run. For bigger jobs, a lead agent delegates to specialized child agents and reports the outcome back where you work.
Runs are recorded step by step, so you can see exactly what the agent did and why. Failed flows retry sensibly and pause themselves after repeated failures instead of looping, and you're notified so nothing fails silently.
Yes. The agent can read and act on any board the connected account can access, including card descriptions, checklists, labels, due dates, members, and comments. It uses that context to move cards, tick checklist items, or answer questions — limited to the boards and scopes your OAuth grant allows.
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