Klykable sessions are prepared from more than a message box. They begin with the URL and the context around it.
URL inputs
The public product language now describes host, path, query parameters, and signed context as the material that prepares a session.
Policy-aware setup
Context envelopes make it easier to attach tenant policy, tools, memory, and interface choices before the user starts.
Product boundary
This is positioning for the Klykable session model, not a claim that arbitrary public URLs can execute untrusted tools.