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Chrome Browser extension to aid gRPC-Web development
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Latest commit fa00952 Aug 23, 2019

gRPC-Web Dev Tools

PRs Welcome

gRPC-Web Dev Tools



Via the Chrome Web Store (recommended)


  1. build it with make build
  2. open the Extension Management page by navigating to chrome://extensions.
  3. enable Developer Mode by clicking the toggle switch next to "Developer mode".
  4. Click the LOAD UNPACKED button and select the extension ./build directory.


const enableDevTools = window.__GRPCWEB_DEVTOOLS__ || (() => {});
const client = new EchoServiceClient('');

NOTE: Requires that your generated client(s) use protoc-gen-grpc-web >= 1.0.4


The example uses docker-compose to start a simple gRPC server, JavaScript client and the Envoy proxy for gRPC-Web:

make example-up

Example will be running on http://localhost:8080

To stop the example:

make example-down
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