Expand description
Where a provider’s models are hosted, as opposed to which wire they speak.
A WireProtocol names the request/response shape;
Hosting names the platform in front of it. The two are independent:
Claude speaks the Anthropic wire both on api.anthropic.com and on Google
Vertex AI, and the two differ in URL shape, auth and a handful of body
fields while sharing the codec. Hosting is derived from the endpoint host,
never declared, so a catalog entry cannot claim one platform while pointing
at another. Hosting::of is the only place that decision is made.
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