Trello Card Assistant with OpenCode

This assistant works from one document, your board playbook, and does four things with it: classify, label, attach a checklist, ask for what is missing. It is a focused loop against a written spec, which is the kind of thing OpenCode is easy to aim at. Being model agnostic helps too, because playbooks grow from half a page to two without anyone deciding to let them.
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Free to start · guided setup · switch agents any time.

Live demo

Watch it work before it's live

Run a staged conversation — no account needed. The agent handles it for real while a simulated world answers its tool calls; nothing touches real accounts, and nothing is actually sent.

New site build: Kaselo Bakery, six pages, launch 14 Oct

added by Priya Raghunathan

Client is Kaselo Bakery in Lisbon, two shops. Scope agreed on the call: six page marketing site plus an online order form. Budget signed off at 8,400 EUR. They want it live by 14 October because the second shop opens that week. Day to day contact is Nuno Cardoso, nuno@kaselo.pt. Brand assets and photography are in the shared folder linked on this card.P

What you'll need

Set up in minutes

Using this template drops you into a guided setup. It asks exactly this, nothing else:

  1. Connect Trello

    One sign-in. The agent acts through your account, scoped to what this template uses.

  2. Connect Slack

    One sign-in. The agent acts through your account, scoped to what this template uses.

  3. Board playbook

    Your board in your own words - which list is the intake, what kinds of request land there, the labels and checklist each type gets, where a card moves next, what counts as a complete request, and which cards are worth a Slack ping.

  4. Runs on OpenCode

    Preselected for this page — connect your OpenCode account during setup, or switch to NoClick's built-in models with one click.

  5. Watch it handle a test run

    A staged conversation against a simulated world — then it’s live.

A considered pairing

Why OpenCode for this agent

One playbook, one loop

No exploration and no side quests. The playbook names the types, the labels and the checklists, and the agent executes against exactly that.

Grow the playbook, raise the model

A longer playbook with more exceptions asks more of the model. OpenCode lets you move to a stronger one without rewriting a line of your rules.

Good to know

Before you fork

Can I compare two harnesses on the same board?

Yes. Duplicate the workflow, set the copy to a different harness, and point it at a second intake list or a copied board. Because the playbook is a variable rather than code, both copies read the same rules and you are genuinely comparing harnesses instead of two sets of instructions. Keep only one of them pointed at the live intake list.

Other editions

Run it with a different agent

claude-codeClaude CodeOpenAICodexopenclawhermesMore OpenCode agents

Make it yours

Put Trello Card Assistant to work on OpenCode.

Free to start. Guided setup, a staged test run, and a workflow you can change at every step.