All 47 Dependencies
Every package codex depends on, ranked by repo health score.
OpenAI Codex CLI is a lightweight, locally-running AI coding agent built by OpenAI and written primarily in Rust. It runs entirely on your machine, accepts plain-language instructions, and autonomously reads files, writes code, runs shell commands, and iterates until the task is complete — all without leaving your terminal.
The agent integrates with OpenAI's models (including GPT-4.1 and the dedicated Codex model family) and exposes both an interactive TUI mode and a non-interactive exec mode suitable for scripting and CI pipelines. A multi-transport app-server protocol lets IDE extensions (VS Code, Cursor, Windsurf) embed the same agent engine through a structured WebSocket or stdio API.
Security is a first-class design goal. Codex isolates each command execution using platform-native sandboxing — macOS Seatbelt, Linux Landlock + bubblewrap, and Windows restricted tokens — so the agent cannot access the network or filesystem paths you did not grant. An exec-policy engine lets teams define fine-grained allow/deny rules for which shell commands the agent may run without requesting approval.
Beyond single-machine use, Codex supports Codex Cloud tasks, where work is dispatched to remote execution environments and the resulting diff is pulled back locally. Session management lets you resume, fork, or archive conversations across terminals and IDE extensions, preserving the full context of prior interactions.
