This developer walkthrough turns all five official GPT-5.6 prompting practices into concrete system-prompt and Responses API changes: leaner prompts, explicit autonomy and approval boundaries, controlled response length and style, selective pro mode, and task-shaped Programmatic Tool Calling.
Every chapter separates the documented guidance from the engineering translation and the migration note, then closes with a check you can run against your own agent configuration.
The examples in this video are implementation-oriented rewrites of the official guidance. They are not quotations unless explicitly labeled as official policy text.