How to Run Codex in a Terminal from Your Phone (github.com)

A developer demonstrated running the Codex CLI from an iPhone by SSH-ing into a free Google Cloud e2‑micro VM using the Termius iOS SSH client. Rather than relying on the limited ChatGPT iOS experience, they ran the full Codex CLI in a remote terminal, built a repository entirely from the phone, SFTPed a recorded prompt to the VM, asked Codex to speed up the recording, and pushed the demo — showing you can do full code generation, file transfer, and repo workflows from a mobile terminal. The workflow is simple but powerful: launch a GCP e2‑micro instance and note its external IP; generate an ED25519 SSH key in Termius and paste the public key into the VM’s SSH Keys in the Google Cloud console; add the VM as a host in Termius and SSH in; then install the Codex CLI inside the VM. For ML/AI practitioners this unlocks on‑the‑go prototyping, remote automation, and demoing full model-assisted coding workflows from a phone. Be mindful of the usual caveats—external IP exposure, SSH key management, and free‑tier resource limits—but otherwise this shows a practical, reproducible way to run advanced code‑generation tooling outside of constrained mobile apps.