OptionaldurationTotal graph execution duration in milliseconds, if tracked.
Per-node metrics keyed by agent config key.
Execution path through the graph as an ordered array of config keys.
Whether the graph invocation succeeded.
OptionaltokensAggregate token usage across the entire graph invocation, if available.
Graph-level metrics for a completed graph run, as returned by a graph runner. Does NOT include handoffs or evaluations — those are managed-layer concerns.