Not directly but maybe the OIDC module from the marketplace could be of help in connecting sailpoint to your Mx app.
Shashin Patel, Do you have found a solution to connect saikpoint at mendix ?
best regards
Mendix does proviode a SCIM module that you can include in your app model.
This module has Mendix platform support.
Mendix R&D has tested with Entra ID and with Okta.
SCIM is an open standard so the SCIM modul;e should work with Sailpoint as well.