Agent IDE — Codex fork for AI-native development environment
c23566b3af
Without this entitlement, hardened mac os release binaries are unable to
allocate the executable memory for the JIT compiled JS.
Tested with local signing. Without entitlement I reproduce the error:
```
#
# Fatal process out of memory: Failed to reserve virtual memory for CodeRange
#
==== C stack trace ===============================
0 codex 0x00000001075d1acc codex + 85760716
1 codex 0x00000001075d6a64 codex + 85781092
2 codex 0x00000001075c7100 codex + 85717248
3 codex 0x0000000107637394 codex + 86176660
4 codex 0x0000000107823cfc codex + 88194300
5 codex 0x000000010777c438 codex + 87508024
6 codex 0x000000010777d130 codex + 87511344
7 codex 0x0000000107c87a54 codex + 92797524
8 codex 0x0000000107641188 codex + 86217096
9 codex 0x00000001076412d8 codex + 86217432
10 codex 0x0000000107553908 codex + 85244168
11 codex 0x000000010465f124 codex + 36008228
12 codex 0x000000010466a0d0 codex + 36053200
13 codex 0x000000010466ce78 codex + 36064888
14 codex 0x000000010734edb0 codex + 83127728
15 libsystem_pthread.dylib 0x00000001810d3c08 _pthread_start + 136
16 libsystem_pthread.dylib 0x00000001810ceba8 thread_start + 8
zsh: trace trap target/release/codex exec --enable code_mode_only --enable code_mode --
```
With the entitlement the exec succeeds.
|
||
|---|---|---|
| .codex/skills | ||
| .devcontainer | ||
| .github | ||
| .vscode | ||
| codex-cli | ||
| codex-rs | ||
| docs | ||
| patches | ||
| scripts | ||
| sdk | ||
| shell-tool-mcp | ||
| third_party | ||
| tools/argument-comment-lint | ||
| .bazelignore | ||
| .bazelrc | ||
| .bazelversion | ||
| .codespellignore | ||
| .codespellrc | ||
| .gitignore | ||
| .markdownlint-cli2.yaml | ||
| .npmrc | ||
| .prettierignore | ||
| .prettierrc.toml | ||
| AGENTS.md | ||
| announcement_tip.toml | ||
| BUILD.bazel | ||
| CHANGELOG.md | ||
| cliff.toml | ||
| defs.bzl | ||
| flake.lock | ||
| flake.nix | ||
| justfile | ||
| LICENSE | ||
| MODULE.bazel | ||
| MODULE.bazel.lock | ||
| NOTICE | ||
| package.json | ||
| pnpm-lock.yaml | ||
| pnpm-workspace.yaml | ||
| rbe.bzl | ||
| README.md | ||
| SECURITY.md | ||
| workspace_root_test_launcher.bat.tpl | ||
| workspace_root_test_launcher.sh.tpl | ||
npm i -g @openai/codex
or brew install --cask codex
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
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
- 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, 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.