Automations fail to use MCP servers

What version of the Codex App are you using (From “About Codex” dialog)?

26.311.21342 (993)

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Darwin 25.3.0 arm64 arm

What issue are you seeing?

I attempted to create an automation that would summarize Trello activity over the last 24h. I have a Trello MCP server configured that works just fine in normal sessions, but when I attempted to run the automation it completely failed to be able to use it, apparently due to sandbox restrictions.

What steps can reproduce the bug?

Set up Trello MCP server, create an automation using it, and try to run the automation.

What is the expected behavior?

MCP servers should be usable, automation permissions should likely be configurable.

Additional information

Feedback ID - 019cf10f-5235-7961-a784-a64a032b0906