Thank you for posting this in Microsoft Q&A.
I understand that you want to authenticate GraphQL APIs using Azure Entra ID User/App Access Tokens.
Yes, it is possible to authenticate the APIs using Azure Entra ID User/App Access Tokens by registering an application in Microsoft Entra Id.
For your reference: https://learn.microsoft.com/en-us/entra/identity-platform/v2-oauth2-auth-code-flow
Hope this helps. Do let us know if you any further queries.
Thanks,
Navya.
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