Most frameworks will do that? In Micronaut it's something like this on the client:

    @Validated
    public interface PetOperations {
        @Post
        @SingleResult
        Publisher<Pet> save(@NotBlank String name, @Min(1L) int age);
    }

then you inject

    @Client("https://example.com/pets") @Inject PetOperations pets;

and call its methods. It will use the annotations to validate the call client side before sending it, and you can implement the same interface on the server:

    @Controller("/pets")
    public class PetController implements PetOperations {
        @Override
        @SingleResult
        public Publisher<Pet> save(String name, int age) {
            Pet pet = new Pet();
            pet.setName(name);
            pet.setAge(age);
            // save to database or something
            return Mono.just(pet);
        }
    }

where the same validations will occur before the call is accepted.

thanks

Jesus Christ.