0n3
MCP servers · Trello · MCP server

Connect Codex CLI to Trello

One line gives Codex CLI 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 Codex CLI's access alone any time.

Get the line for Codex CLIConnect 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 Codex CLI. OpenAI's terminal agent reads 0n3 over Streamable HTTP with a token from your environment.
  3. Ask Codex CLI: whoami. Then: "List boards in Trello".
Put the token in your environment
export ON3_TOKEN="<your 0n token>"

Add it to your shell profile so Codex finds it next time.

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

What Codex CLI 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

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Codex CLI with other apps

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