Agent IDE — Codex fork for AI-native development environment
a02342c9e1
## Summary
This PR improves `js_repl` crash diagnostics so kernel failures are
debuggable without weakening timeout/reset guarantees.
## What Changed
- Added bounded kernel stderr capture and truncation logic (line + byte
caps).
- Added structured kernel snapshots (`pid`, exit status, stderr tail)
for failure paths.
- Enriched model-visible kernel-failure errors with a structured
diagnostics payload:
- `js_repl diagnostics: {...}`
- Included only for likely kernel-failure write/EOF cases.
- Improved logging around kernel write failures, unexpected exits, and
kill/wait paths.
- Added/updated unit tests for:
- UTF-8-safe truncation
- stderr tail bounds
- structured diagnostics shape/truncation
- conditional diagnostics emission
- timeout kill behavior
- forced kernel-failure diagnostics
## Why
Before this, failures like broken pipe / unexpected kernel exit often
surfaced as generic errors with little context. This change preserves
existing behavior but adds actionable diagnostics while keeping output
bounded.
## Scope
- Code changes are limited to:
-
`/Users/fjord/code/codex-jsrepl-seq/codex-rs/core/src/tools/js_repl/mod.rs`
## Validation
- `cargo clippy -p codex-core --all-targets -- -D warnings`
- Targeted `codex-core` js_repl unit tests (including new
diagnostics/timeout coverage)
- Tried starting a long running js_repl command (sleep for 10 minutes),
verified error output was as expected after killing the node process.
#### [git stack](https://github.com/magus/git-stack-cli)
- 👉 `1` https://github.com/openai/codex/pull/11666
- ⏳ `2` https://github.com/openai/codex/pull/10673
- ⏳ `3` https://github.com/openai/codex/pull/10670
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|---|---|---|
| .codex/skills/test-tui | ||
| .devcontainer | ||
| .github | ||
| .vscode | ||
| codex-cli | ||
| codex-rs | ||
| docs | ||
| patches | ||
| scripts | ||
| sdk/typescript | ||
| shell-tool-mcp | ||
| third_party | ||
| .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 | ||
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.
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
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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
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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.
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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.
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This repository is licensed under the Apache-2.0 License.