A role prompt gives the AI a role, such as “You are an experienced editor”, so that tone and perspective fit.
Example
“You are the examiner in an oral exam. Ask me questions about photosynthesis one at a time.”
For pros
Roles often sit in the system prompt and steer jargon, tone and depth. A role does not add real expertise; you still need to check facts. Clear tasks and examples usually have more effect than a role alone.
