Use Codex CLI from your phone with SSH.

This flow is for setup and one-shot server work. It shows exactly what happens in sshChat, what happens in the browser, and what actually runs on Ubuntu.

Step 1: Open your Ubuntu host in sshChat

Open the host in sshChat. The commands execute on the remote Ubuntu box.

whoami
uname -a
pwd

Confirm normal one-shot commands already work before you install anything else.

Step 2: Install Codex CLI on the server

Paste the commands into sshChat. They run on the Ubuntu server.

cd /tmp
curl -L https://github.com/openai/codex/releases/latest/download/codex-x86_64-unknown-linux-musl.tar.gz -o codex.tar.gz
tar -xzf codex.tar.gz
sudo mv codex-x86_64-unknown-linux-musl /usr/local/bin/codex
sudo chmod +x /usr/local/bin/codex
codex --version

The last line prints the installed Codex CLI version. If it does, the binary is ready.

Step 3: Complete device login in the browser

Start the login in sshChat, then switch to the browser on your phone to approve it.

codex login --device-auth

sshChat shows the verification URL and code. Open that URL in your browser, log in, enter the code, then return to sshChat.

Step 4: Use sshChat for one-shot Codex-adjacent maintenance

Use sshChat as the command surface. The work happens on the server.

codex --version
git status
docker compose ps
docker compose logs --tail 100

Use Stream Mode for long commands like npm install or docker compose build. Keep short snapshot commands in normal mode.