I don't ever machine parse it, but it can be useful for manual discovery if you get an API that isn't super well documented. I think I might generally prefer Sw

I don't ever machine parse it, but it can be useful for manual discovery if you get an API that isn't super well documented. I think I might generally prefer Swagger, too, but not everything is implemented in a language that has a library like that. At the end of the day, though, I'd seriously much rather just have a halfway well commented *.proto file. Work smarter, not harder. It's just that I won't recommend that for public-facing APIs because GRPC isn't universally well supported, while JSON over HTTP is.