With current groth in industry support to GRPC protocol, companies are more likely to adopt GRPC backend instead of REST backend sooner than expected and there’s no other tool like POSTMAN to this API protocol yet. So, why not have GRCP support on most used tool for API Testing currently available that is Postman?
You may already be aware but in reply to your post above, check out the update here; Postman Now Supports gRPC
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