0n3
MCP servers · Trello · connector · GPT action

Connect ChatGPT to Trello

One line gives ChatGPT your Trello account as tools: 10 endpoints, boards, cards, lists, called with your own connection. No key in the prompt, a receipt for every call, revoke ChatGPT's access alone any time.

Get the line for ChatGPTConnect Trello first

Three steps

  1. Create a free 0n3 account and connect Trello. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into ChatGPT. A custom connector in Developer mode, or an Action on a custom GPT from the OpenAPI spec.
  3. Ask ChatGPT: whoami. Then: "List boards in Trello".
Custom connector (needs Developer mode)
  1. Settings → Connectors (or Apps) → Advanced → Developer mode on
  2. Create → name 0n3 · MCP server URL https://0n3.app/mcp · Authentication: OAuth
  3. Finish the sign-in with your 0n account
  4. Enable the connector in a chat and ask: "whoami"

ChatGPT connectors cannot send a static header, so 0n3 signs you in through its OAuth door (dynamic client registration is on).

The line above carries a placeholder; 0n3.app/install mints a real key named for ChatGPT and fills it in.

What ChatGPT can then do in Trello

Boards · Manage Trello boards5
List boardsGET /members/me/boards
Get a boardGET /boards/{id}
Create a boardPOST /boards
Get listsGET /boards/{boardId}/lists
List labelsGET /boards/{boardId}/labels
Cards · Manage cards4
Create a cardPOST /cards
Update a cardPUT /cards/{id}
Delete a cardDELETE /cards/{id}
Get a cardGET /cards/{id}
Lists · Manage lists0
Manage lists
More · Everything else this app exposes.1
Create a listPOST /lists

Trello in other AI clients

Claude Code + TrelloMCP server + skillClaude (desktop & claude.ai) + TrelloconnectorCodex CLI + TrelloMCP serverGemini CLI + TrelloMCP serverCursor + TrelloMCP serverVS Code (Copilot) + TrelloMCP serverWindsurf + TrelloMCP server

ChatGPT with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints