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## Why Responses WebSocket requests were encoded in two steps: first into a full `serde_json::Value`, then again into the JSON string sent over the socket. That walks the full request twice and keeps an extra JSON tree alive. These requests can contain the complete conversation history and tool schemas, so the extra work grows with the request size. ## What changed - serialize `ResponsesWsRequest` directly to the wire string - pass that string through the existing WebSocket stream and send path - keep the existing error mapping, tracing, send timeout, and telemetry behavior - compare the new wire JSON with the previous `to_value` payload in a focused test ## Performance I measured both paths in an optimized temporary test using a 6,324,180-byte request: 4 MiB of history plus 256 tools with 8 KiB descriptions. Each path ran 100 times. - previous `to_value` + `to_string`: 209 ms total, 2.09 ms per request - direct `to_string`: 174 ms total, 1.74 ms per request - difference: about 17% faster, or 0.35 ms per request The direct path also removes one full temporary `serde_json::Value` tree. For this mostly string-backed payload, that avoids roughly one payload-sized copy plus the JSON node overhead. The exact memory saving depends on the request shape. The temporary benchmark was removed before committing. ## Validation - `just test -p codex-api` — 125 passed - `just fix -p codex-api`
baddb5e686
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2026-06-15 18:33:35 +02:00
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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.