Cost as a first-class signal

The first time a runaway agent loop costs you four figures overnight, you stop treating tokens as free.

Budget-aware planning

TRACE estimates the cost of a plan before it runs, and plans within a ceiling you set. The estimate lives in the trace header, next to the step count.

Spend you can see

Every tool call carries its own cost. When something’s expensive, you don’t audit a bill, you read the line.