Net logs
Developer Tools
Extendable network logs debugger
Users
780
Rating
5.0
Reviews
7
7D Growth
+29|3.86%
Stable signalUnknownMedium-risk permissions
gRPC-Web Developer Tools
gRPC-Web Developer Tools for debugging application's gRPC-Web network requests.
Users3KCurrent public install base
Rating3.6Store average score
Reviews8Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
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3 assetsgRPC-Web Developer Tools Media preview
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3.63
Latest
3.63
7-day rating change
0.00
2026年7月16日2026年7月22日
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Version2.5.0
ManifestV3
Size441KiB
Languages1English
Published
Store updated
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English
Overview
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gRPC-Web Developer Tools is a Chrome DevTools extension for the official gRPC-Web library. It allows you to inspect the gRPC network log in the Chrome Developer Tools, and displayed as the deserialized JSON objects, rather than the base64 encoded binary format.
You will get a new tab called gRPC-Web in your Chrome DevTools. This will start recording gRPC client network requests that have been configured (see Usage for details). Features are similar to the default Network tab, but only tracks gRPC requests.
Selecting a network log entry will display the deserialized JSON for the request, response and any error object returned by your gRPC server.
There is some setup needed in the code before using this extension. Take a look at the README: https://github.com/SergioTx/grpc-web-devtools
Fork from: https://chrome.google.com/webstore/detail/grpc-web-developer-tools/kanmilmfkjnoladbbamlclhccicldjaj adding a couple of fixes.
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Store average score3.6Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average3.6Average computed only from synced review bodies below
Reviews with text8Synced review bodies
Total ratings / reviews8Chrome Web Store public rating/review count
Store average score: 3.6. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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This works only some of the time, i can usually get it to work by opening it in dev tools, stopping and then restarting the recording then refresh the page. It will then work until i make a change and the page updates, then it no longer records changes until i close the tools window and do the whole thing again. This is really an issue because all our network calls are gRPC.
Description isn't clear at all. What is `new EchoServiceClient` ? It works well on project with Connect-Web, but not with other project with web. Getting these errors: "Denying load of chrome-extension://cacoibopgjlodngfokahhkphgcohakai/inject.js. Resources must be listed in the web_accessible_resources manifest key in order to be loaded by pages outside the extension." "Denying load of chrome-extension://cacoibopgjlodngfokahhkphgcohakai/connect-web-interceptor.js. Resources must be listed in the web_accessible_resources manifest key in order to be loaded by pages outside the extension." So probably "Until the extension author updates the manifest to include the right web_accessible_resources and support MV3, this extension will not work in the current Chrome version."
The best tool I have ever used. I hope it will have helped me get negative Sparx Maths XP. :D
The README is not really clear at all. Points: 1. Prop window.__GRPCWEB_DEVTOOLS__ is not defined. There I expect, that I should install something somewhere in my project. Where? 2. Installations through webstore are pretty clear. But the manual installations are mess. For which system are the steps supposed? Linux? 3. If the installation steps are supposed to make it work with your project, so why it is necessary to install it only through Linux. I have nothing against Linux, but I don't see helpful to switch between OSs because of one devtool.
Really good extension to debug gRPC requests
I've just installed. It cannot detect the gRPC requests. I'm using protobuf version 3
Only grpc extension in the marketplace that works for me!
Really useful! Thanks!