grpcui

grpcui is a command-line tool that lets you interact with gRPC servers via a browser. It's sort of like Postman, but for gRPC APIs instead of REST. In some ways, this is like an extension to grpcurl. Whereas grpcurl is a command-line interface, grpcui provides a web/browser-based GUI. This lets you interactively construct requests to send to a gRPC server.