Hook would be a great feature

[Kare-Udon]

Hi, thanks for your hard work!
I think adding hook features, execute commands at certain events, would be quite useful.
Like when codex needs user to respond, or the process is finished, users can play sounds or send notifications.

[SoraTakai]

+1 on this feature. Would be quite useful to play a sound when the model finishes its response, which usually takes quite a long time.

[tommedema]

I agree we need hooks but for sounds you can do something like notify = ["bash", "-lc", "afplay /System/Library/Sounds/Blow.aiff"] in config.toml (adjust if you're not on mac)

[Elehiggle]

I agree we need hooks but for sounds you can do something like notify = ["bash", "-lc", "afplay /System/Library/Sounds/Blow.aiff"] in config.toml (adjust if you're not on mac)

For Windows:

config.toml:
notify = ["powershell", "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", "C:\\Users\\User\\.codex\\notify.ps1"]

notify.ps1:

param([string]$NotificationJson)

try { $n = $NotificationJson | ConvertFrom-Json } catch { exit 0 }
if ($n.type -ne 'agent-turn-complete') { exit 0 }

$wav = Join-Path $env:WINDIR 'Media\Windows Exclamation.wav'

# Spawn a detached PowerShell to play the sound synchronously, but without blocking Codex
$cmd = "(New-Object System.Media.SoundPlayer '$wav').PlaySync()"
Start-Process -WindowStyle Hidden -FilePath "powershell.exe" -ArgumentList @(
  "-NoProfile", "-ExecutionPolicy", "Bypass", "-Command", $cmd
) | Out-Null

Seperate ps1 was necessary for me, because otherwise it would have syntax errors on codex' side. Works on WSL, too - if you have WSL interop path disabled, use absolute path for powershell: /mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe

[liunice]

+1 on this feature

[ohnotnow]

I'd also really appreciate this. Even just a basic hook for "I'm done" so we could run a command (to play a sound or whatever) would make it a lot nicer to use. Save me switching windows as often just to check 'is it done yet? no. Is it done yet? no. Is it....'.

[etraut-openai]

There is already a notification hook that is triggered when codex completes a task. For details, refer to this documentation.

[jpcaparas]

Yeah, but that doesn't react to exit code 2, does it? In which case, CC would keep chipping away until the error gets resolved (ie if you were running a "biome check" command as a hook)

[brainit-consulting]

it should a suble 'positive' ping sound yes +1

[ZeldOcarina]

Agreed Claude Code has this!

[Allamss]

+1

[ts-mothership]

+1 for this feature.

I already use hooks with Claude Code by playing a sound when Claude is done or needs feedback (MacOS command /usr/bin/say need feedback). This is a must have for Codex as well!

[babon]

+1 This is a must have now, Cursor just came out with their own Hooks support

[jmilldotdev]

please

[vuyelwadr]

for sure

[mdc-git]

+1

[the-kro]

+1

[shallvtalk]

+1

[miklschmidt]

This is already sort of a thing through the "notify" config setting it just needs more events than "agent-turn-complete".

[tommedema]

and you need to be able to interrupt it or ask for follow-up etc.

[kuzma2022]

+1

[Daniishkhan]

+1

[j-greig]

+1 i'm trying to get claude code and codex to ping each other messages as they collab in a repo currently and hooks would make this a lot easier : )

[Morriz]

try InstruktAI/TeleClaude. It's months of work and wraps the big 3 CLIs and even has conversation mode between AIs so they can collab. It's quite amazing I must say. Ping me if you want a demo

[Morriz]

It is an extensive setup based on tmux and has its own TUI that shows all sessions amongst all CLIs and has built in todo preparation and work state machine and makes them work for days in a row. I am maxing out my pro accounts every week for both claude and codex, and use gemini in between for creative/Greenfield. The work that went into the layered context provisioning is super if I may say so myself.

[xab3r]

+1

[MartinMystikJonas]

+1

[manderle-ops]

+1

[vosamoilenko]

+1

[joshuawheelock]

+1 hooks please

[xieincz]

hooks please

[Gbenga238]

+1

[fstepho]

+1

[sychen23]

+1

[tomastoth4]

+1

[shubhamgupta731]

+1

[lespaceman]

App Server is what you all need: https://developers.openai.com/codex/app-server

[Floriferous]

Could you give an example for how to set it up?

[danias]

@etraut-openai

Claude Code, Gemini, Cursor, GitHub Copilot OpenCode all offer hooks that enable rich AI-native development workflows. Basically, all except Codex. Please look into it. I am happy to contribute a design (and even the implementation) for how this could be done in this CLI if you are interested.

Please note that it would be very useful, as Cursor did by supporting hooks in both its CLI and IDE, to also add hooks to the macOS Codex app, not just the CLI. Of course, starting at least with the CLI would be a fantastic first step.