Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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Typically you want to use webhooks for such auto-provisioning: <https://www.ory.sh/docs/guides/integrate-with-ory-cloud-through-webhooks>

So I am thinking correctly then by using the webhook + some system that knows about the default roles then

Right?! Just to confirm just in case my English failed me