Do you mean the devtool protocol[1]? I didn't follow the space so have no knowledge on it. On the other hand there seem to be a polyfilled API on chrome.devtool

Do you mean the devtool protocol[1]? I didn't follow the space so have no knowledge on it. On the other hand there seem to be a polyfilled API on chrome.devtools.network.Request which OP's extension uses extensively https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/webextension-polyfill/namespaces/devtools_network.d.ts#L22 https://github.com/DefinitelyTyped/DefinitelyTyped/blob/mast... [1] https://chromedevtools.github.io/devtools-protocol/ https://chromedevtools.github.io/devtools-protocol/