Stop Being Repetitive: Using 'Exclude Seen' Filters in Agents

Your AI agent just cost you $800,000 by recommending the same hotels users already rejected—three times in one conversation. Most retrieval systems optimize for similarity while ignoring user history, wasting 60% of compute on items users have already seen. Learn how to implement stateful filtering with prebuilt('exclude_seen'), cutting query latency from 300ms to 35ms while ensuring agents never repeat themselves.