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Slack + Trello: kanban in chat, chat in kanban.

Post Trello card events to Slack channels and create Trello cards from Slack messages or reactions. Lightweight task capture from chat.

Connect Trello and SlackSee reverse direction
Trigger app
Trello as the trigger

Workflows fire when something happens in Trello.

See all 7 triggers →
Action app
Slack as the action

Workflows do something in Slack, instantly.

See all 45 actions →
Both directions

Pick the way that fits your stack.

Pair pages are mirrored. Each direction gets its own dedicated page.

Trello → Slack

When something happens in Trello, do it in Slack.

7 Trello triggers wired to 45 Slack actions. Most-used pairing: Attachment Added → Add Reaction.

Slack → Trello

Or fire it the other way around.

13 Slack triggers wired to 21 Trello actions downstream.

See Slack → Trello →
Popular pairings

Common Trello → Slack workflows.

Pick a pairing to set it up in two minutes. Each one is a fully editable recipe.

Showing 9 of 315 combinations
When attachment added in Trello, add reaction in Slack.

Fires when an attachment is added to a Trello card. Use to copy the file to S3/Drive for backup, virus-scan, or to extract text for downstream processing.

When attachment added in Trello, raw api request in Slack.

Fires when an attachment is added to a Trello card. Use to copy the file to S3/Drive for backup, virus-scan, or to extract text for downstream processing.

When attachment added in Trello, archive channel in Slack.

Fires when an attachment is added to a Trello card. Use to copy the file to S3/Drive for backup, virus-scan, or to extract text for downstream processing.

When attachment added in Trello, cancel scheduled message in Slack.

Fires when an attachment is added to a Trello card. Use to copy the file to S3/Drive for backup, virus-scan, or to extract text for downstream processing.

When new card in Trello, add reaction in Slack.

Fires when a new card is created on a Trello board. The standard inbound hook for AI triage, auto-assignment, or external mirroring.

When new card in Trello, raw api request in Slack.

Fires when a new card is created on a Trello board. The standard inbound hook for AI triage, auto-assignment, or external mirroring.

When new card in Trello, archive channel in Slack.

Fires when a new card is created on a Trello board. The standard inbound hook for AI triage, auto-assignment, or external mirroring.

When new card in Trello, cancel scheduled message in Slack.

Fires when a new card is created on a Trello board. The standard inbound hook for AI triage, auto-assignment, or external mirroring.

When card moved in Trello, add reaction in Slack.

Fires when a card is moved between lists on a Trello board (the classic Kanban-stage-change event). Use to celebrate completion, log cycle-time, or kick off downstream work.

How it works

Connect Trello and Slack in five steps.

No code, no glue, no half-day setup. Each step is one click.

  1. 1
    Connect
    Authorize Trello and Slack

    Open Tiny Command, authorize Trello and Slack once each. Both connections are available to every workflow on your account.

  2. 2
    Trigger
    Pick a Trello trigger

    Drop the Trello → Attachment Added trigger onto the canvas. Tiny Command auto-registers the webhook.

    POST /v1/webhooks/trello.trigger-attachment-added
  3. 3
    Transform
    Add a filter or AI step

    Optionally add a Filter node ("subject contains URGENT") or an AI step ("classify intent") between trigger and action.

  4. 4
    Action
    Add the Slack action

    Drop the Slack → Add Reaction action below it. Map fields from the Trello payload into the Slack inputs.

    slack.add-reaction
  5. 5
    Publish
    Publish and forget

    Hit Publish. Tiny Command runs it in production from second one. Watch the run-log fill up.

FAQ

Questions about Trello + Slack.

How do I create Trello cards from Slack messages?
Slack Reaction Added (e.g., :memo:) → Trello Create Card on chosen board with title = message text, description with Slack URL + author. Reactions become the capture verb.
Can I post Trello card moves to Slack?
Yes. Trello Card Moved → Slack Send Message in #project channel with card name + source list + destination list. Visual workflow updates in chat.
How do I DM the Trello card assignee in Slack?
Map trello_member_id → slack_user_id. After Trello Card Updated, Slack Send DM with card context. Personal heads-up beyond Trello's native pings.
Can Slack slash commands create Trello cards?
Yes. /trello-card command with text → Trello Create Card on chosen board. Useful for capturing ideas from team discussions without leaving Slack.
How do I avoid Slack channel noise from busy Trello?
Filter Trello triggers to significant events (card created, moved to specific lists). Skip per-comment, per-label-change. Aggregate via daily digests.
Can I include Trello card preview in the Slack message?
Yes. Use Slack Block Kit attachments with card name, description, due date, labels, members as fields. Renders as rich preview inline.
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Wire Trello to Slack in 2 minutes.

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