Signal-Driven Observation for Long-Horizon Web Agents

In three linesWeb agents over long horizons consume thousands of tokens per step (raw DOM, accessibility trees), degrading context. Signal-Driven Observation (SDO) decouples observation from action: a sub-call reads full DOM but returns only task-relevant elements, re-invoked only when a lightweight signal detector fires (URL transitions, new interactive elements, action failures).

Summary generated by Claude — human-verified