General configuration steps

Whether you use Codex, Claude Code, or Gemini CLI, it is recommended to complete the following common environment check first.

Check Node.js

Run the following command in the terminal to check if Node.js is installed.

Windows

node -v

macOS

node -v

Linux

node -v

If you can see the version number, it means that Node.js is installed. If there is no output or the prompt command does not exist, please install Node.js LTS version first.

Install common CLI

Open the terminal and install the following CLI tools as needed. The npm installation commands for the three platforms are the same.

Windows

npm i -g @anthropic-ai/claude-code@latest
npm i -g @openai/codex@latest
npm i -g @google/gemini-cli@latest

macOS

npm i -g @anthropic-ai/claude-code@latest
npm i -g @openai/codex@latest
npm i -g @google/gemini-cli@latest

Linux

npm i -g @anthropic-ai/claude-code@latest
npm i -g @openai/codex@latest
npm i -g @google/gemini-cli@latest

After the installation is complete, run the following commands to check:

Windows

claude
codex
gemini

macOS

claude
codex
gemini

Linux

claude
codex
gemini

As long as you can access the corresponding interactive interface, the basic installation is usually completed.

Info

Some CLIs check the local environment when they are first launched, and prompts related to login, Git, and default Shell may appear. Handle clear missing items before continuing to configure API addresses and keys.

Windows users recommend installing Git

If the Claude Code prompts that a Git environment is missing, please first confirm that Git is available.

Windows

git --version

macOS

git --version

Linux

git --version

If the command can output a version number, Git is already available on the current terminal.