Write web programming using Codex and AI agents

By EngineAI Team | Published on January 11, 2026
Write web programming using Codex and AI agents
This tutorial will teach you how to join a repository, plan changes, implement them with AI agents, and open pull requests in order to use OpenAI's Codex to ship your first change from a GitHub repository without writing code by hand.

Step-by-step:

To access it, navigate to ChatGPT, click "Codex" on the left sidebar.

Click "Manage environment," choose your GitHub repository and organization, and then adjust the code execution parameters.

Select "Execute" to make changes on a branch or "Plan" to discuss scope without coding. For instance, "Can you give insights on what this project is about?"

Click "Create PR" after entering an implementation prompt (such as "Turn this static landing page into a website where users can paste their own stories and poetry") and previewing the changes with "Run this code and show me the site."

For safety, use branches. Don't write code directly to main unless absolutely necessary.

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