Andrei Eternal 42e932d7bf [hooks] turn_id extension for Stop & UserPromptSubmit (#15118)
## Description

Adding an extension to the spec that exposes the turn_id to hook
scripts. This is a codex-specific mechanic that allows connecting the
hook runs with particular turns

## Testing

hooks config / sample hooks to use. Extract this, rename codex ->
.codex, and place this into a repo or your home folder. It includes:
config.toml that enables hooks, hooks.json, and sample python hooks:


[codex.zip](https://github.com/user-attachments/files/26102671/codex.zip)

example run (note the turn_ids change between turns):

```
› hello


• Running SessionStart hook: lighting the observatory

SessionStart hook (completed)
  warning: Hi, I'm a session start hook for wizard-tower (startup).
  hook context: Startup context: A wimboltine stonpet is an exotic cuisine from hyperspace

• Running UserPromptSubmit hook: lighting the observatory lanterns

UserPromptSubmit hook (completed)
  warning: wizard-tower UserPromptSubmit demo inspected: hello for turn: 019d036d-c7fa-72d2-b6fd-
78878bfe34e4
  hook context: Wizard Tower UserPromptSubmit demo fired. For this reply only, include the exact
phrase 'observatory lanterns lit' near the end.

• Aloha! Grateful to be here and ready to build with you. Show me what you want to tackle in wizard-
  tower, and we’ll surf the next wave together. observatory lanterns lit

• Running Stop hook: back to shore

Stop hook (completed)
  warning: Wizard Tower Stop hook reviewed the completed reply (170 chars) for turn: 019d036d-c7fa-
72d2-b6fd-78878bfe34e4


› what's a stonpet?


• Running UserPromptSubmit hook: lighting the observatory lanterns

UserPromptSubmit hook (completed)
  warning: wizard-tower UserPromptSubmit demo inspected: what's a stonpet? for turn: 019d036e-3164-
72c3-a170-98925564c4fc
  hook context: Wizard Tower UserPromptSubmit demo fired. For this reply only, include the exact
phrase 'observatory lanterns lit' near the end.

• A stonpet isn’t a standard real-world word, brah. In our shared context here, a wimboltine stonpet
  is an exotic cuisine from hyperspace, so “stonpet” sounds like the dish or food itself.

  If you want, we can totally invent the lore for it next. observatory lanterns lit

• Running Stop hook: back to shore

Stop hook (completed)
  warning: Wizard Tower Stop hook reviewed the completed reply (271 chars) for turn: 019d036e-3164-
72c3-a170-98925564c4fc
```
42e932d7bf · 2026-03-18 21:48:31 -07:00
4,654 Commits
2026-01-08 07:50:58 -08:00
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2025-04-16 12:56:08 -04:00
2026-03-10 04:11:31 +00:00

npm i -g @openai/codex
or brew install --cask codex

Codex CLI is a coding agent from OpenAI that runs locally on your computer.

Codex CLI splash


If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.


Quickstart

Installing and running Codex CLI

Install globally with your preferred package manager:

# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex

Then simply run codex to get started.

You can also go to the latest GitHub Release and download the appropriate binary for your platform.

Each GitHub Release contains many executables, but in practice, you likely want one of these:

  • macOS
    • Apple Silicon/arm64: codex-aarch64-apple-darwin.tar.gz
    • x86_64 (older Mac hardware): codex-x86_64-apple-darwin.tar.gz
  • Linux
    • x86_64: codex-x86_64-unknown-linux-musl.tar.gz
    • arm64: codex-aarch64-unknown-linux-musl.tar.gz

Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.

Using Codex with your ChatGPT plan

Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Team, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.

You can also use Codex with an API key, but this requires additional setup.

Docs

This repository is licensed under the Apache-2.0 License.

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