gRPC devtools is a Browser DevTools extension designed to facilitate the debugging of gRPC network requests. It is a free tool developed by Ernest and is available for the Chrome platform.

To use gRPC devtools, you need to have grpc-web versionor higher installed. If you are using an older version, make sure to upgrade it before installing the extension.

Once installed, you will need to sign in and start your free trial from the extension's action/popup in order to use all its features.

The extension provides two main functionalities: gRPCDevtoolsStreamInterceptor and gRPCDevtoolsUnaryInterceptor. These allow you to intercept and modify gRPC streams and unary requests respectively. You can use these interceptors in your code to enhance your debugging experience.

If you are using TypeScript, the extension also provides type definitions for the StreamInterceptor and UnaryInterceptor from the grpc-web library.

With gRPC devtools, debugging gRPC network requests becomes easier and more efficient. It is a valuable tool for developers working with gRPC in their Chrome-based projects.