jif
6ced1ac5eb
## Why Remote MCP stdio buffers executor-provided stdout until a JSON-RPC line completes and stderr until a diagnostic line completes. A malicious or broken executor can keep sending chunks without a newline, making orchestrator memory grow without bound. Executor event boundaries are arbitrary, so a valid message before an oversized line must not be lost merely because both arrived in one event. ## What changed - Limit one stdout JSON-RPC line to 8 MiB. - Limit one stderr diagnostic line to 1 MiB. - Check each logical line before copying its bytes into the retained buffer. - Preserve complete stdout messages that precede an oversized line and deliver them before closing the stream. - Close the MCP transport on overflow; existing transport cleanup terminates the executor-managed process. - Preserve multiple lines per chunk, CRLF framing, and final unterminated messages at EOF. - Box the pending stdio transport so the added framing state does not inflate every `ClientState` value. - Add regression coverage for cross-chunk overflow, bounded lines in a larger chunk, and a valid prefix before an oversized line. ## Scope This bounds pre-newline buffering for executor-backed MCP stdio only. It does not change local stdio framing or address memory amplification while parsing a complete JSON message.
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
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# 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, Business, 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.