cli.md Codex Docs, 2026-02-19 20:37 UTC → 2026-03-13 00:34 UTC

1# Codex CLI1# Codex CLI

2 2 

3Pair with Codex in your terminal

4 

5Codex CLI is OpenAI's coding agent that you can run locally from your terminal. It can read, change, and run code on your machine in the selected directory.3Codex CLI is OpenAI's coding agent that you can run locally from your terminal. It can read, change, and run code on your machine in the selected directory.

6It's [open source](https://github.com/openai/codex) and built in Rust for speed and efficiency.4It's [open source](https://github.com/openai/codex) and built in Rust for speed and efficiency.

7 5 

49experimental. For the best Windows experience, use Codex in a WSL workspace47experimental. For the best Windows experience, use Codex in a WSL workspace

50and follow our [Windows setup guide](https://developers.openai.com/codex/windows).48and follow our [Windows setup guide](https://developers.openai.com/codex/windows).

51 49 

50If you're new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).

51 

52---52---

53 53 

54## Work with the Codex CLI54## Work with the Codex CLI

57 57 

58Run `codex` to start an interactive terminal UI (TUI) session.](https://developers.openai.com/codex/cli/features#running-in-interactive-mode)[### Control model and reasoning58Run `codex` to start an interactive terminal UI (TUI) session.](https://developers.openai.com/codex/cli/features#running-in-interactive-mode)[### Control model and reasoning

59 59 

60Use `/model` to switch between GPT-5.3-Codex and other available models, or adjust reasoning levels.](https://developers.openai.com/codex/cli/features#models-reasoning)[### Image inputs60Use `/model` to switch between GPT-5.4, GPT-5.3-Codex, and other available models, or adjust reasoning levels.](https://developers.openai.com/codex/cli/features#models-reasoning)[### Image inputs

61 61 

62Attach screenshots or design specs so Codex reads them alongside your prompt.](https://developers.openai.com/codex/cli/features#image-inputs)[### Run local code review62Attach screenshots or design specs so Codex reads them alongside your prompt.](https://developers.openai.com/codex/cli/features#image-inputs)[### Run local code review

63 63 

74Give Codex access to additional third-party tools and context with Model Context Protocol (MCP).](https://developers.openai.com/codex/mcp)[### Approval modes74Give Codex access to additional third-party tools and context with Model Context Protocol (MCP).](https://developers.openai.com/codex/mcp)[### Approval modes

75 75 

76Choose the approval mode that matches your comfort level before Codex edits or runs commands.](https://developers.openai.com/codex/cli/features#approval-modes)76Choose the approval mode that matches your comfort level before Codex edits or runs commands.](https://developers.openai.com/codex/cli/features#approval-modes)

77 

78[Next

79 

80Features](https://developers.openai.com/codex/cli/features)