openai/codex
Codex CLI is a lightweight terminal coding agent developed by OpenAI that runs locally on the user's computer. The client automates programming and code modification tasks directly within the command-line console. Users can authenticate sessions using a ChatGPT account covering Plus, Pro, Business, Edu, or Enterprise plans, or alternatively configure manual authentication using an application programming interface key. Beyond the terminal interface, documented official options across the product family include code editor integrations for VS Code, Cursor, and Windsurf, the Codex desktop application, and the cloud-based web interface Codex Web.
The target audience consists of software developers seeking an interactive coding agent inside command-line development workflows. Supported operating system platforms include macOS, Linux, and Windows. Installation on macOS or Linux is completed by running curl -fsSL https://chatgpt.com/codex/install.sh | sh, whereas Windows users install the client by executing powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex". Both script commands download and immediately execute remote code; review the source before running them. Alternative package manager installations are officially supported via npm install -g @openai/codex or brew install --cask codex, alongside standalone GitHub Release binaries. Users initiate work by running the codex command in their console. The GitHub snapshot shows the repository is not archived and records an Apache-2.0 license. For another coding agent, compare OpenCode; its workflow and terms differ.
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