We'd like your feedback on the following experimental APIs:

Caution: Don't depend on these experimental APIs. They might disappear, and they will change. Also, the Chrome Developer Dashboard doesn't allow you to upload extensions that use experimental APIs.

How to use experimental APIs

1. Make sure you're using the Dev channel of Google Chrome. Although the experimental APIs might work in other versions, we need your feedback on the latest incarnation of the APIs, which you can find on the Dev channel.
2. Using the API documentation for the Dev channel, write the code for your extension.
3. Specify the "experimental" permission in your extension's manifest, like this:

   "permissions": [
     "experimental",
     ...
   ],
   

4. Enable the experimental API in your browser. You can do this in either of two ways:
   • Go to chrome://flags, find "Experimental Extension APIs", click its "Enable" link, and restart Chrome. From now on, unless you return to that page and disable experimental APIs, you'll be able to run extensions that use experimental APIs.
   • Specify the --enable-experimental-extension-apis flag each time you launch the browser. On Windows, you can do this by modifying the properties of the shortcut that you use to launch Google Chrome. For example:

     path_to_chrome.exe --enable-experimental-extension-apis

5. Give us feedback! Your comments and suggestions help us improve the APIs and decide which ones should move from experimental to supported.

More information

For information on the standard APIs that extensions can use, see chrome.* APIs and Other APIs.