The rapid proliferation of autonomous AI agents across enterprise and Internet-scale deployments creates a structural challenge that existing agent frameworks cannot address: how to enable any agent to reach and invoke any other agent's capabilities without pre- established bilateral integration, across organizational boundaries, at Internet scale. This document states the normative requirements for that problem. It prescribes no solution, no specific mechanism, no message format, and no assumption of centralized or distributed architecture. Its purpose is to establish a verifiable yardstick against which any claimed "intent routing" solution can be judged.