You what's the best thing? do not write the prompt, you teach it:

Writing a good agent prompt is a skill most teams do not have.

Teacher AI is a chat where you tell your agent what to do in plain words, like "add insurance related points", and it updates the instructions. You see exactly what changed and approve it, so nothing happens behind your back. It asks a few questions when your request is unclear, instead of guessing. It starts from proven setups for common jobs like admissions, collections, reception, booking and lead qualification. You can upload a document in the chat to teach it faster.

What is harder for you: writing instructions, or testing them?