Use OpenAI's Codex to code from your phone

Published on January 23, 2026 | Updated on January 23, 2026
Use OpenAI's Codex to code from your phone
This article will teach you how to use Codex to 10× your code output by building an agent that will automatically review your code, executing it on the cloud from any location (even your phone), and putting it up in Cursor.

Step-by-step:

To install Codex, navigate to the Codex quickstart, choose your IDE (Cursor), then open a new Codex Agent within that editor.

Request that Codex create an agents.md file from your project (or a PRD/spec if you're starting from scratch), then set up Git so Codex can comprehend your codebase and rules.

Examine slash commands (such as /review, /status, and /context) to examine modifications, govern Codex's reasoning across your files, and manage context.

To access the project from anywhere, push it to GitHub, link it to Codex, and turn on automated PR reviews so that each pull request is examined in the cloud.

Cloud runs don't count against your local usage, so code locally in Cursor and then delegate reviews to cloud Codex.

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