"name": ...
"minimum_chrome_version": "14.0",
"devtools_page": "devtools.html",
"permissions": [ "experimental" ... ],
...
}

The developer tools extension pages get access to the chrome.experimental.devtools.* APIs which are described further in our docs. Be sure to check out the sample extensions, which include extensions for jQuery and FirePHP users and a simple audit extension that finds broken links.

For a richer example, you can also check out Page Speed for Chromium, which uses the extensions API to provide Page Speed suggestions right in the Chrome Devtools UI.

We’re looking forward to seeing your feedback on the APIs and, of course, cool extensions coming to life!