Backstage gRPC Playground

A Backstage frontend plugin that provides a gRPC playground interface, ported from BloomRPC. Current stable version is 0.3.0 (beta). It allows sending gRPC requests (unary, client streaming, server streaming) directly from Backstage entity pages or a dedicated route. Proto files are loaded from a backend plugin (backstage-grpc-playground-backend). Unlike BloomRPC, this plugin is web-based, integrates with Backstage's API documentation system, and generates markdown documentation via protoc-gen-doc. Does not support server reflection or gRPC-web. Requires Backstage ^1.5.0 and React 16/17.