Getting IDP metadata for SAML client with attributes

We have client application which communicates on SAML with Keycloak client (which is SAML client).
We are using SAML IDP metadata from KeyCloak (at Realm level) but it does not have assertion details (for attributes). Is there any way to get IDP metadata from KeyCloak which has attribute details in it (after attribute mapping is configured for client) at client level?

After going through saml specification, understood that attribute details is not part of it and is not required either.
Attributes can be managed through mappers at Identity Provider and Clients in KeyCloak.

Above question can be considered as redundant.