## Why The standalone `image_gen.imagegen` extension should behave like native image generation for artifact persistence and UI completion, while returning its save-location guidance as part of the tool result instead of injecting a developer message. ## What Changed - Added an image-generation completion hook for extension tools so core can persist generated images and emit the existing `ImageGeneration` lifecycle events. - Reused core image artifact persistence for extension output and removed extension-local save-path/file-writing logic. - Split shared image persistence from built-in finalization so native image generation keeps its existing developer-message instruction behavior. - Returned the generated image save-location instruction through the extension `FunctionCallOutput`, alongside the generated image input for model follow-up. - Preserved the existing image-generation event shape for current UI and replay compatibility. - Avoided cloning the full generated-image base64 payload when emitting the in-progress image item. - Removed dependencies no longer needed after moving persistence out of the extension crate. ## Fast Follow - Adjust the existing Extension API and add a general `TurnItem` finalization path for re-usability of code ## Validation - Ran `just fmt`. - Ran `just bazel-lock-update`. - Ran `just bazel-lock-check`. - Ran `just test -p codex-tools -p codex-extension-api -p codex-image-generation-extension`. - Ran `just test -p codex-core image_generation_publication_is_finalized_by_core`. - Ran `just test -p codex-core handle_output_item_done_records_image_save_history_message`. - Ran `just fix -p codex-tools -p codex-extension-api -p codex-core -p codex-image-generation-extension`.
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
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
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# 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
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
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, Business, 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.
