How to connect Trello to Codex

1. 1. Enable Trello in Metorial

   In your Metorial portal, enable the Trello MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server and sign in

   The Codex CLI, IDE extension and ChatGPT desktop app share this config.

   Copy

   codex mcp add metorial --url <your-magic-mcp-url>
   codex mcp login metorial

3. 3. Check the connection

   Type /mcp in Codex to see Metorial and its Trello tools.

• Add Comment: Add a comment to a Trello card.
• Get Boards: List all boards accessible to the authenticated user, or boards belonging to a specific member or workspace.
• Manage Checklist: Create, delete checklists on cards, and add, update, or remove checklist items.
• Add Attachment: Add a URL attachment to a Trello card.
• Manage Board: Create, update, or delete a Trello board.
• Get Lists: Get all lists on a Trello board.
• Manage Card Members: Add or remove member assignments on a Trello card.
• Get Card: Get detailed information about a single Trello card, including its description, members, attachments, due dates, and labels.
• Manage List: Create, update, or archive a list on a Trello board.
• Get Board Members: List all members of a Trello board.
• Get Cards: Get cards from a specific list or an entire board.
• Search: Search across Trello boards and cards.
• Get Activity: Retrieve the activity log (actions) for a board or card.
• Manage Labels: Get, create, update, or delete labels on a Trello board.
• Manage Card: Create, update, move, or delete a Trello card.
• And 5 more on the Trello MCP server page.

• Limit which Trello tools Codex sees with enabled_tools and disabled_tools on the metorial server in config.toml.
• Set default_tools_approval_mode to auto, prompt, writes or approve. writes prompts only for tools that are not marked read-only.
• Type /mcp in the composer to see the connected servers.
• Override the approval behavior for a single Trello tool with tools.<tool>.approval_mode.

Metorial is listed but tools are missing

Codex can connect without credentials and then see nothing. Run codex mcp login metorial to complete the OAuth sign-in.

Metorial times out at startup

Codex waits 10 seconds by default. Raise startup_timeout_sec under [mcp_servers.metorial] in ~/.codex/config.toml.

Long tool calls fail after a minute

The default tool timeout is 60 seconds. Raise tool_timeout_sec for the metorial server in config.toml.

Based on the Codex MCP documentation.