## Why Codex memory updates currently rely on instructions that tell agents to create ad-hoc note files directly in the memory workspace. The memories extension already has a `MemoriesBackend` abstraction for local storage and future non-filesystem backends, so the ad-hoc note writer should live behind that same interface instead of baking local filesystem assumptions into the tool shape. ## What - Adds a `memories/add_ad_hoc_note` tool to the existing memories tool bundle. - Extends `MemoriesBackend` with `add_ad_hoc_note` plus request/response types so remote memory stores can implement the same operation later. - Implements the local backend by creating append-only notes under `extensions/ad_hoc/notes`. - Validates the tool-provided filename contract (`YYYY-MM-DDTHH-MM-SS-<slug>.md`), rejects path-like filenames, rejects empty notes, and uses create-new semantics so existing notes are never overwritten. - Keeps memories tool contribution behind the existing commented-out registration path; this defines the tool surface without newly exposing it through app-server. ## Test Plan - `just test -p codex-memories-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.
