Agent IDE — Codex fork for AI-native development environment
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Jeremy Rose 2c6995ca4d
exec-server: additional context for errors (#7935)
Add a .context() on some exec-server errors for debugging CI flakes.

Also, "login": false in the test to make the test not affected by user
profile.
2025-12-15 11:40:40 -08:00
.devcontainer chore: install an extension for TOML syntax highlighting in the devcontainer (#1650) 2025-07-22 10:58:09 -07:00
.github stage new windows sandbox binaries as artifacts (#8076) 2025-12-15 09:15:32 -08:00
.vscode Move rust analyzer target dir (#5328) 2025-10-18 17:31:46 -07:00
codex-cli chore: remove bun env var detect (#7534) 2025-12-03 10:23:45 -08:00
codex-rs exec-server: additional context for errors (#7935) 2025-12-15 11:40:40 -08:00
docs Fixed formatting issue (#8069) 2025-12-15 06:18:33 -08:00
scripts fix: ToC so it doesn’t include itself or duplicate the end marker (#4388) 2025-11-05 14:52:51 -08:00
sdk/typescript fix: Upgrade @modelcontextprotocol/sdk to ^1.24.0 (#7817) 2025-12-10 10:17:00 -08:00
shell-tool-mcp docs: update the docs for @openai/codex-shell-tool-mcp (#7962) 2025-12-13 09:44:26 -08:00
third_party/wezterm Vendor ConPtySystem (#7656) 2025-12-09 17:23:51 +00:00
.codespellignore Vendor ConPtySystem (#7656) 2025-12-09 17:23:51 +00:00
.codespellrc TypeScript SDK scaffold (#4455) 2025-09-29 13:27:13 -07:00
.gitignore nit: personal git ignore (#6787) 2025-11-17 17:45:52 +00:00
.npmrc chore: migrate to pnpm for improved monorepo management (#287) 2025-04-18 16:25:15 -07:00
.prettierignore [apply-patch] Clean up apply-patch tool definitions (#2539) 2025-08-21 20:07:41 -07:00
.prettierrc.toml Initial commit 2025-04-16 12:56:08 -04:00
AGENTS.md docs: remove blanket ban on unsigned integers (#7957) 2025-12-12 17:01:56 -08:00
CHANGELOG.md Documentation improvement: add missing period (#3754) 2025-10-30 13:01:33 -07:00
cliff.toml docs(changelog): update install command to @openai/codex@<version> (#2073) 2025-10-18 11:02:22 -07:00
flake.lock Fix nix build (#4048) 2025-10-17 12:19:08 -07:00
flake.nix Fix nix build (#4048) 2025-10-17 12:19:08 -07:00
justfile Move justfile to repository root (#7652) 2025-12-05 16:24:55 -08:00
LICENSE Initial commit 2025-04-16 12:56:08 -04:00
NOTICE resizable viewport (#1732) 2025-07-31 00:06:55 +00:00
package.json chore: subject docs/*.md to Prettier checks (#4645) 2025-10-03 11:35:48 -07:00
pnpm-lock.yaml fix: Upgrade @modelcontextprotocol/sdk to ^1.24.0 (#7817) 2025-12-10 10:17:00 -08:00
pnpm-workspace.yaml feat: codex-shell-tool-mcp (#7005) 2025-11-21 08:16:36 -08:00
PNPM.md fix: include pnpm lock file (#377) 2025-04-18 17:01:11 -07:00
README.md move execpolicy quickstart (#7127) 2025-11-21 19:13:51 -05:00

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

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

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

Codex CLI splash


Quickstart

Installing and running Codex CLI

Install globally with your preferred package manager. If you use npm:

npm install -g @openai/codex

Alternatively, if you use Homebrew:

brew install --cask codex

Then simply run codex to get started:

codex

If you're running into upgrade issues with Homebrew, see the FAQ entry on brew upgrade codex.

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

Codex CLI login

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. If you previously used an API key for usage-based billing, see the migration steps. If you're having trouble with login, please comment on this issue.

Model Context Protocol (MCP)

Codex can access MCP servers. To configure them, refer to the config docs.

Configuration

Codex CLI supports a rich set of configuration options, with preferences stored in ~/.codex/config.toml. For full configuration options, see Configuration.

Execpolicy

See the Execpolicy quickstart to set up rules that govern what commands Codex can execute.

Docs & FAQ


License

This repository is licensed under the Apache-2.0 License.