How to connect Trello MCP to Claude

Connect Claude Web, Desktop and Cowork to Trello MCP. List cards due this week on your board, move completed cards to the done list, and more using natural language, with authentication handled for you.

Trello MCP logoTrello MCP
Dcr Oauth

Trello is a visual project management service for organizing work on boards, lists, and cards. Its MCP server provides permission-aware access to Trello planning data.

15 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Trello account to Claude via Composio Connect, enabling it to list cards due this week on your board, move completed cards to the Done list, summarize overdue cards across your boards, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

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Connecting Trello to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Trello account

Back in Claude, ask it to connect to Trello or give it any Trello-related task.

For example, ask Claude to:

  • "List cards due this week on your board"
  • "Move completed cards to the Done list"
  • "Summarize overdue cards across your boards"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Trello account is ready to use.

What is the Trello Claude Connector, and what's possible with it?

The Trello MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Trello account. It provides structured and secure access to your boards, lists, cards, checklists, member Inbox, workspaces, and Planner, so your agent can find work, organize tasks, update cards, and manage planning activities on your behalf.

  • Board and work discovery: Have your agent search across your workspaces for Trello boards and cards, then read board, list, and card details to surface current work.
  • Card and list management: Let the agent create, update, move, archive, and mark cards as done, while also creating, updating, archiving, or moving lists.
  • Checklists and labels: Direct your agent to read card checklists, create and update checklist items, and manage labels on cards as tasks change.
  • Inbox and workspace review: Instruct your agent to review your Trello Inbox, add Inbox cards, read workspace information, and retrieve member profile details.
  • Planner coordination: Have your agent read Planner information, create calendar events, and manage links between Planner events and Trello cards.

Troubleshooting

1. Why does Claude not use the Composio connector for Trello?

The connector can show as connected, but Claude must use it in each Trello conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Trello again.

2. Why does Claude show an MCP server error before Trello connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Trello.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Trello.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Trello authorization link not work?

The Composio connector is one server. Your Trello account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Trello connection.
  • Composio creates a fresh Trello authorization link.
  • Open that link in your browser and finish the Trello sign-in.

4. Why do Trello actions fail after they worked before?

The Trello connection can expire or lose permission.

  • Ask Claude to inspect the Trello connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Trello account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Trello.
  • If the action still fails with a permission error, check that the connected account has that permission in Trello itself.

5. How do I switch to a different Trello account?

Claude can manage the Trello connection for you.

  • Ask Claude to disconnect or delete the current Trello account.
  • Ask Claude to connect Trello again.
  • Open the new Composio authorization link for Trello.
  • Sign in with the other Trello account in the browser.
  • After the account connects, ask Claude to retry the Trello task.

6. Why is my Trello connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Trello connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Trello tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Trello.
TOOLS

Supported Tools

Every Trello MCP action and event your agent gets out of the box.

Trelloreadboard

Read Trello boards.

Trelloreadcard

Fetch a Trello card's full details, or list cards across a board or list to surface open work items.

Trelloreadchecklist

Read Trello checklists (and their check items) attached to a card.

Trelloreadinbox

Triage and review the authenticated user's Trello Inbox — the personal quick-capture board where new cards and notifications land.

Trelloreadlist

Read Trello lists.

Trelloreadmember

Get a Trello member's profile.

Trelloreadplanner

Read Trello Planner information for the authenticated user.

Trelloreadworkspace

Read Trello workspaces (organizations) the current user has access to.

Trellosearch

Discover Trello boards or cards by keyword across all workspaces.

Trellowriteboard

Create Trello boards.

Trellowritecard

Create, update, move, archive, mark Trello cards done, or manage labels on cards.

Trellowritechecklist

Write Trello checklists and their check items.

Trellowriteinbox

Write Trello Inbox cards.

Trellowritelist

Create, update, archive, or move a Trello list.

Trellowriteplanner

Create Trello Planner calendar events and manage card-event links.

FAQ

Frequently asked questions

With a standalone Trello MCP server, the agents and LLMs can only access a fixed set of Trello tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Trello and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Trello tools.

Yes, absolutely. You can configure which Trello scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Trello data and credentials are handled as safely as possible.

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