Cloud Identity Platform: Are IdP-initiated SAML flows possible?

Question

Google Cloud Identity Platform has documentation for Service Provider-initiated SAML auth flows. After searching the docs and online, I can't find anything about Identity Provider-initiated flows.

Are IdP-initiated SAML flows supported at all by Identity Platform? Assuming I'm using the firebase JS SDK, what would receiving the IdP SamlResponse POST even look like?

Thanks!

Answer 1

I just found that the current docs call out:

Currently, only service-provider (SP) initiated SAML flows via the web SDK are supported.