Guide: Writing Constraint Files for Negotiating Agents
A constraint file is the contract between you and your agent. Keep it short.
max_price_usd: 40000
max_term_months: 12
forbid: [auto_renew, exclusivity, unlimited_liability]
escalate_if: [price_above_list, new_vendor]
Agents follow hard limits well. They follow vague intent ("get a good deal") badly.