duration: "streaming" action is executing. seq and ts_mono_ns are set by the agent, ts_mono_ns being the setpoint’s issue time on the session clock via the agent’s clock offset (AWP-CLK-009); the world applies frames in seq order, envelope-checks each before actuation, and aggregates receipt minus ts_mono_ns as command latency in session.telemetry. Command frames never carry ts_send_ns. Command frames on a lockstep world (not permitted: command channels are streaming-only, AWP-CMD-001) never carry tick; ts_sim_ns is not meaningful agent→world and MUST be omitted.
A servo/json payload against the example channel from the command channels spec page:
awp:cmd-frame