Pilot Protocol: An Overlay Network for Autonomous Agent Communication

This document specifies Pilot Protocol, an overlay network that provides autonomous AI agents with virtual addresses, port-based service multiplexing, reliable and unreliable transport, NAT traversal, encrypted tunnels, and a bilateral trust model. Pilot Protocol operates as a network and transport layer beneath application-layer agent protocols such as A2A and MCP. It encapsulates virtual packets in UDP datagrams for transit over the existing Internet. The protocol gives agents first-class network citizenship --- stable identities, reachable addresses, and standard transport primitives --- independent of their underlying network infrastructure.