The CRISPE framework is a popular template for structuring complex prompts:

• C — Capacity and Role (what role the AI plays)
• R — Request (what you want)
• I — Instructions (how to do it)
• S — Style (tone, format, voice)
• P — Perspective (what angle to take)
• E — Examples (few-shot samples)

Example

"Act as a veteran CMO [C]. Write a product launch email [R]. Use storytelling and a clear CTA [I]. Casual and exciting tone [S]. From the customer's perspective [P]."

Reference:

Prompt frameworks

https://docs.anthropic.com/en/docs/build-with-claude/prompt-engineering/overview