hwsc-api-blocks Steps to Declaring gRPC API Contract: Example: hwsc-grpc-sample-svc Read protocol buffer guideline Read gRPC with guideline Once the endpoint is implemented, add a folder in the hwsc-api-blocks "int" folder int internal or for developers only ext external or production only Make and define proto file in the folder "int/hwsc-file-svc" with a function that uses the service, example Ensure protocol buffers 3.6.1 is installed Modify bash script for generating proto stub Run the bash script to generate proto stub Implement your gRPC service in the language you prefer, example Implement a wrapper for the gRPC call, example Test your function using index.js