After this course, you can use ChatGPT and Codex with purpose in real projects: have unfamiliar code explained, plan changes, implement features and repair failing tests. Above all, you know how to check the results and set clear limits for the agent through project rules, permissions and the sandbox. The course suits you if you program regularly and want to use AI tools in a way that keeps code quality and responsibility within the team.
What you’ll take away.
- Describe tasks so that a coding agent produces usable results
- Explore unfamiliar code with Codex and plan changes
- Safeguard features and bug fixes with tests and reviews
- Set up project rules, permissions and the sandbox appropriately
- Build skills and automation for recurring tasks
Your training in detail
- Who is it for?
- Software developers and technical teams who want to use AI assistance and coding agents responsibly in existing projects.
- Prerequisites
- You program regularly in at least one language and work with Git and a development environment. You need ChatGPT access. Codex features and usage limits depend on your plan.
- Format & planning
- Standard length: 4 training days. A different length can be arranged for companies.
Agenda: from understanding to application
Our independently developed agenda proposal. Focus areas, lab environment and scope are agreed before booking.
ChatGPT and Codex: interfaces and suitable use cases
Good task descriptions and context for agents
Exploring existing code and planning changes
Building features, fixing bugs and repairing tests
Code review and quality checks on the output
AGENTS.md, configuration, permissions and the sandbox
Skills, hooks and integration with GitHub workflows
You take on a sample project with failing tests, have Codex work out causes and a plan, add a feature and review the pull request yourself.
Exams, licences & credentials
No OpenAI certification exam is planned for this course. The course therefore does not prepare you for a vendor exam. If your offer names an exam, the exam and its fees are included only if the offer confirms this. This is not an official vendor course unless the offer says so.
Vendor references & review date
Sources checked on 2026-11-04. These sources describe the technology or external exam requirements. They do not imply a partnership with NextNowa.
Your learning content
These objectives describe the training topic. The specific syllabus, dates and trainer are agreed before booking; the written offer is binding.
Frequently asked questions
How does this differ from an API course?
This course is about your own development work with ChatGPT and Codex. Building your own AI applications on the OpenAI API is not the focus.
Which programming language do I need?
No particular language is required. What matters is that you can read and judge code confidently in your own language.
Does ChatGPT and Codex for Developers: AI-Assisted Coding and Review include a certificate?
No OpenAI certification exam is planned for this course. The course therefore does not prepare you for a vendor exam. If your offer names an exam, the exam and its fees are included only if the offer confirms this. This is not an official vendor course unless the offer says so.