Agent IDE — Codex fork for AI-native development environment
2383978a2c
## Why `compact_resume_after_second_compaction_preserves_history` has been intermittently flaky in Windows CI. The test had two one-shot request matchers in the second compact/resume phase that could overlap, and it waited for the first `Warning` event after compaction. In practice, that made the test sensitive to platform/config-specific prompt shape and unrelated warning timing. ## What Changed - Hardened the second compaction matcher in `codex-rs/core/tests/suite/compact_resume_fork.rs` so it accepts expected compact-request variants while explicitly excluding the `AFTER_SECOND_RESUME` payload. - Updated `compact_conversation()` to wait for the specific compaction warning (`COMPACT_WARNING_MESSAGE`) rather than any `Warning` event. - Added an inline comment explaining why the matcher is intentionally broad but disjoint from the follow-up resume matcher. ## Test Plan - `cargo test -p codex-core --test all suite::compact_resume_fork::compact_resume_after_second_compaction_preserves_history -- --exact` - Repeated the same test in a loop (40 runs) to check for local nondeterminism. |
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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
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.