PROJECT MANAGEMENT

Real-Time Trello WIP-Limit Breach Alerter

When a card enters an in-progress list, checks whether that list now exceeds its configured WIP limit and, if so, immediately alerts the team in Slack so they pull work to done…

CategoryProject Management
Enginesim
Difficultybeginner
Triggerwebhook
Steps5
Setup~5 min

How it runs

The automated pipeline, trigger to output.

  • TriggerCard changes list (Trello webhook)TrelloTrello
  • LogicFilter to lists with a WIP limit
  • ActionCount cards in destination listTrelloTrello
  • LogicBranch: count over limit?
  • OutputPost WIP-breach alert to SlackSlack

What it does

It enforces WIP limits the moment they're broken. As soon as a card moves into a tracked in-progress list, the workflow counts how many cards that list now holds and compares against the limit you set per list. If the list is over, it fires an immediate Slack alert naming the list, its count, and the cap.

When to use it

Use it when your team agrees on WIP limits but routinely blows past them because Trello won't enforce them. This keeps flow healthy by catching overload at the instant it happens rather than at retro.

How it works

  1. 1A Trello webhook fires when any card changes list.
  2. 2A filter keeps only moves into lists that have a configured WIP limit.
  3. 3The workflow counts current cards in the destination list.
  4. 4A branch checks whether the count exceeds the limit; under-limit moves end silently.
  5. 5Over-limit breaches post a Slack alert with the list name, current count, and the limit so the team rebalances.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect TrelloKanban boards for everything.
  2. 2
    Connect SlackChannels, DMs, threads, mentions.
  3. 3
    Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
  4. 4
    Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
  5. 5
    Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.

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