A2A Routing Agents: State-Aware Mid-Execution Routing with Sprix SAGE Router
A2A routing agents decide which agent configures, owns, or continues an in-flight task once execution has already begun. The Sprix SAGE Router is a dependency-free Python reference implementation of that policy: it compares SELF, COLLABORATE, and HANDOFF under permission, budget, and deadline constraints, and returns an auditable trace. Its own trajectory replay shows progress-awareness mainly buys restraint — wasted work falls from 0.104 to 0.059 and the switch rate from 80.1% to 58.4%, while utility stays inside overlapping error bars. ...