awesome-copilot/plugins/phoenix/skills/phoenix-tracing/references/span-agent.md

AGENT Spans

AGENT spans represent autonomous reasoning blocks (ReAct agents, planning loops, multi-step decision making).

Required: openinference.span.kind = "AGENT"

Example

{
  "openinference.span.kind": "AGENT",
  "input.value": "Book a flight to New York for next Monday",
  "output.value": "I've booked flight AA123 departing Monday at 9:00 AM"
}