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Michael Bolin 2cd1a0a45e
fix: report an appropriate error in the TUI for malformed rules (#9011)
The underlying issue is that when we encountered an error starting a
conversation (any sort of error, though making `$CODEX_HOME/rules` a
file rather than folder was the example in #8803), then we were writing
the message to stderr, but this could be printed over by our UI
framework so the user would not see it. In general, we disallow the use
of `eprintln!()` in this part of the code for exactly this reason,
though this was suppressed by an `#[allow(clippy::print_stderr)]`.

This attempts to clean things up by changing `handle_event()` and
`handle_tui_event()` to return a `Result<AppRunControl>` instead of a
`Result<bool>`, which is a new type introduced in this PR (and depends
on `ExitReason`, also a new type):

```rust
#[derive(Debug)]
pub(crate) enum AppRunControl {
    Continue,
    Exit(ExitReason),
}

#[derive(Debug, Clone)]
pub enum ExitReason {
    UserRequested,
    Fatal(String),
}
```

This makes it possible to exit the primary control flow of the TUI with
richer information. This PR adds `ExitReason` to the existing
`AppExitInfo` struct and updates `handle_app_exit()` to print the error
and exit code `1` in the event of `ExitReason::Fatal`.

I tried to create an integration test for this, but it was a bit
involved, so I published it as a separate PR:
https://github.com/openai/codex/pull/9166. For this PR, please have
faith in my manual testing!

Fixes https://github.com/openai/codex/issues/8803.




---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/9011).
* #9166
* __->__ #9011
2026-01-13 23:21:32 +00:00
.devcontainer chore: install an extension for TOML syntax highlighting in the devcontainer (#1650) 2025-07-22 10:58:09 -07:00
.github fix: support remote arm64 builds, as well (#9018) 2026-01-10 18:41:08 -08:00
.vscode Move rust analyzer target dir (#5328) 2025-10-18 17:31:46 -07:00
codex-cli fix: add tui.alternate_screen config and --no-alt-screen CLI flag for Zellij scrollback (#8555) 2026-01-09 18:38:26 +00:00
codex-rs fix: report an appropriate error in the TUI for malformed rules (#9011) 2026-01-13 23:21:32 +00:00
docs fix(tui): document paste-burst state machine (#9020) 2026-01-13 11:48:31 -08:00
patches feat: add support for building with Bazel (#8875) 2026-01-09 11:09:43 -08:00
scripts download new windows binaries when staging npm package (#8203) 2025-12-17 13:34:32 -08:00
sdk/typescript fix: handle early codex exec exit (#8825) 2026-01-07 08:54:27 -08:00
shell-tool-mcp fix: change codex/sandbox-state/update from a notification to a request (#8142) 2025-12-18 15:32:01 -08:00
third_party/wezterm Vendor ConPtySystem (#7656) 2025-12-09 17:23:51 +00:00
.bazelignore fix: add .git to .bazelignore (#9008) 2026-01-10 00:55:02 +00:00
.bazelrc feat: add support for building with Bazel (#8875) 2026-01-09 11:09:43 -08:00
.codespellignore Terminal Detection Metadata for Per-Terminal Scroll Scaling (#8252) 2025-12-18 12:50:00 -08:00
.codespellrc Terminal Detection Metadata for Per-Terminal Scroll Scaling (#8252) 2025-12-18 12:50:00 -08:00
.gitignore gitignore bazel-* (#8911) 2026-01-08 07:50:58 -08:00
.markdownlint-cli2.yaml fix(tui): document paste-burst state machine (#9020) 2026-01-13 11:48:31 -08:00
.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 add generated jsonschema for config.toml (#8956) 2026-01-13 10:22:51 -08:00
announcement_tip.toml Revert "Delete announcement_tip.toml" (#9032) 2026-01-10 07:30:14 -08:00
BUILD.bazel fix: support remote arm64 builds, as well (#9018) 2026-01-10 18:41:08 -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
defs.bzl feat: add support for building with Bazel (#8875) 2026-01-09 11:09:43 -08:00
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 add generated jsonschema for config.toml (#8956) 2026-01-13 10:22:51 -08:00
LICENSE Initial commit 2025-04-16 12:56:08 -04:00
MODULE.bazel fix: support remote arm64 builds, as well (#9018) 2026-01-10 18:41:08 -08:00
MODULE.bazel.lock add generated jsonschema for config.toml (#8956) 2026-01-13 10:22:51 -08:00
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
rbe.bzl fix: support remote arm64 builds, as well (#9018) 2026-01-10 18:41:08 -08:00
README.md Fixed broken link in README (#8682) 2026-01-02 15:23:22 -07:00

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 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.