Agent Post-Training as Environment Design

Agent training and evaluation depend on the tasks, tools, observations, and feedback available to the model.

Feedback

A final success score can hide the cause of failure. Tool errors, rejected patches, and state changes help locate the decision that needs correction.

Scoring

A useful evaluation tests whether an agent completes the task and whether it can exploit the scoring rule. Inspecting traces and testing negative cases helps distinguish the two.

Related work