gRPC-Gateway

A reverse proxy that translates RESTful JSON API requests into gRPC calls, enabling HTTP/JSON clients to consume gRPC services without native gRPC support. The mapping is defined with google.api.http annotations in the .proto file. gRPC-Gateway generates both a reverse proxy and an OpenAPI specification from the same proto definition. It is widely used to expose gRPC microservices to browser clients and legacy REST consumers simultaneously.