gRPC Web Tool

Purpose-built for developers working with gRPC-Web, this tool validates calls against a provided proto, enabling in-depth examination of requests and responses. It accepts an endpoint URL, a method name, a proto definition, and a JSON-formatted request message; it encodes the payload to protobuf, transmits a gRPC-Web request, and decodes the binary response back to JSON for easy inspection. The tool supports unary and streaming RPCs, optional metadata, and custom deadlines to mimic real client behavior. It records timing data and surfaces protocol-level details such as status codes and trailers, aiding root-cause analysis and performance benchmarking. A key differentiator is the ability to import a full proto definition to derive field validation rules and to produce realistic example payloads that align with the schema, reducing guesswork during integration testing. Typical use cases include frontend services calling backend RPCs, validating new methods after proto changes, and integrating RPC tests into CI pipelines. Core value lies in deterministic inputs, transparent encoding/decoding, and comprehensive error reporting, all without requiring a full browser-based gRPC client stack.