Observe Trace Collect distributed trace spans for a task and build a visual trace tree showing the execution flow, timing, and bottlenecks. When to use When you need to understand how a task was executed across agents -- which spans ran, how long each took, where bottlenecks occurred, and how agents coordinated. Steps 1. Collect spans -- call (or ) to retrieve all spans matching the . The tool family routes by namespace; does NOT (it routes by tier ), so use here. See ruflo-agentdb ADR-0001 §"Namespace convention". 2. Build trace tree -- organize spans into a parent-child hierarchy using refe…