How to integrate Trello MCP with Atomic Agent

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Trello.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Trello account. See the Atomic Agent documentation for installation instructions.

How Atomic Agent connects to Trello

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Trello to Atomic Agent

1. Sign up or sign in to the Composio dashboard. Copy your API key.
2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
3. Ask Atomic Agent to do something in Trello. It searches Composio for the right tool.
4. On first use, open the sign-in link returned in the chat. Connect your Trello account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

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.

Use Trello from Atomic Agent

With your account connected, ask Atomic Agent to work with Trello in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.