Outcome Monitors
Recovery affordances that let an agent notice and repair tool calls that failed silently.
Overview
A tool call that returns a well-formed response the agent cannot act on is worse than one that raises: the agent proceeds as if the step succeeded, and the error surfaces several steps later, if at all.
Approach
Outcome monitors sit after the call and check the result against what the step was supposed to achieve, giving the agent a place to notice the failure and a concrete affordance for repairing it.