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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<@U04G1UNRPS5> I asked around in the Ory team   Nobody has used Casbin here so we cannot support you with an answer. 
Are you looking for more details about permissions ? Take a look at ory/keto in Github. 

I’m familiar with keto. I might try it anyways. Just wanted to know if there was someone who experienced both to give me the pros and cons. 