@gent and Codex on mobile

Codex on mobile lets you start, approve and review Codex tasks in the ChatGPT app. @gent lets you do the same by email for Codex and Claude Code from any mail app.

The difference

Codex on mobile puts Codex in the ChatGPT app. You pick Cloud or a connected computer, describe the task, approve commands and review the changed files on your phone.

@gent works from your mail app. The subject line picks Codex or Claude Code, the project and the model. The runner on your computer replies in the same thread with each update and the result.

Check a task from your phone

Reply status to a task thread. The runner answers with each turn and its state, and the number of approvals that wait for you.

Mail · Inbox

me (6)2:18 PMCodex/website: fix the footer links

me (4)11:02 AMClaude [opus]: review the auth flow

Codex/website: fix the footer linksto you+agents@gmail.com

me2:04 PM1

Find the footer links that return 404 and point them at the right pages. Run the link check.

meRunner2:04 PM

Queued: codex / website / agent default / headless

meRunner2:05 PM

Started. Your agent is working on this task.

me2:09 PM2

status

meRunner2:09 PM3

Turn 1: running Pending approvals: 0

meRunner2:18 PM4

CompletedTwo footer links pointed at removed pages. Both now point at the current pages, and the link check passes.

Task 5d2e8b14. Reply in this thread to continue, or reply status / stop.

1The task. The subject picks Codex and the project named website in your config.
2One word. Reply status in the thread. It does not start a new turn.
3The state. You see each turn and its state, and the approvals that wait for you.
4The result. You receive the agent's final message with the task ID to continue in your terminal.

When Codex asks to run a command, an approval email shows the command, the folder and the reason. Reply approve or deny.

Side by side

@gentCodex on mobile

Where the agent runsYour computerOpenAI Cloud or a connected computer

AgentsCodex and Claude CodeCodex

ComputermacOS or LinuxA connected Mac or Windows PC

On your phoneAny mail app that sends from your Gmail on any phoneThe ChatGPT mobile app for iOS

Setupuv tool install atgent, then atgent initIn the ChatGPT desktop app, open Settings, choose Connections, choose Control this Mac or PC, then use the QR code.

AvailabilityFree, from PyPIYour access depends on rollout and your workspace settings.

Approve an actionReply approve or deny to the approval email.In the app

Your computerAwake and online, with the runner activeAwake and online

When @gent fits

Your computer runs Linux, or your phone runs Android. The Codex mobile docs cover a Mac or Windows PC and the iOS app.
You also send work to Claude Code.
You want every request and result kept as a searchable mail thread.

When Codex on mobile fits better

You want to read diffs and changed files on your phone.
You want a task to keep running in the cloud while your computer sleeps.

Questions

Does Codex on mobile work on Linux?

The Codex on mobile docs name a connected Mac or Windows PC, or Cloud. @gent runs on macOS or Linux.

Can @gent run Codex with a chosen model?

Yes. Put the model in square brackets in the subject, for example Codex/website [gpt-6.1-sol]: fix the build. Replies in that thread keep the model.

How do I check a running Codex task by email?

Reply status in the task thread. @gent replies with the state of each turn and the number of pending approvals.

Other comparisons

The comparison table shows every tool in one place. You can also compare @gent with Claude Code Remote Control or Happy. To set up @gent, start with Getting started.

Checked on 2026-10-31 against OpenAI's Codex on mobile docs (developers.openai.com/codex/remote) and @gent 0.5.5 on PyPI.