Designing AI for payroll and admissions calls for deterministic guardrails

To keep risk low, the systems place deterministic business rules outside the language model. Experts first encode pay rules and admission criteria in structured formats, generate all possible scenarios, and expose only the relevant rule set to the model for retrieval and explanation. The model cannot create or modify rules, and every response is logged with the rule version, model details, and tool calls, allowing human reviewers to trace and verify outputs. When errors still occur, the author tightened the guardrails, moving more logic into explicit code and flagging uncertain cases for human review.