Choose the paid job
Start with a repeated, expensive decision or handoff, not with a generic chatbot. Name the buyer, triggering event, approved inputs, useful output, accountable owner, and the measurable sign that the job is complete. If you cannot test the output, you cannot promise it responsibly.
Business buyers rarely purchase 'an AI agent' in the abstract. They purchase a shorter review, fewer repeated questions, faster qualification, or another accountable outcome, and they need to know which data, people, and systems the delivery touches.
Record a baseline before launch, then compare completed jobs, corrections, safe refusals, time, support load, and cost.