Is there a File API or Image API with Prisma ?

Yes. Its in the docs

thank you if you could, would you provide me a link. I see it in the docs for Graphcool, but I wasn't able to find an example for Prisma, it could be me, thank you in advance

Maybe I mixed them up then..

There is no File API, but an integration with File services like S3 is straight forward. Older example: https://github.com/prismagraphql/prisma/tree/master/examples/archive/file-handling-s3