| Name | Type | Description |
|---|---|---|
base_url* | str | None | Resolved provider endpoint, or |
Return a stable identity for the endpoint that owns a prompt cache.
A missing endpoint means the provider's default API. Only scheme, host,
port, path and a digest of the query are significant; every other spelling
detail is normalized away, including host/scheme case, a trailing slash, a
default port, a trailing root dot, fragments, userinfo, and ;params.
Path and query stay significant because proxies can route them to separate
backends; the query does so via _opaque_digest, which keeps a
credential-bearing query out of the checkpoint. Path case is preserved --
proxies may route on it -- which also means a credential embedded in a path
is recorded verbatim; see _opaque_digest for why that residual is
accepted.
The result is opaque: compare it for equality, never parse it.
