AdWords API Version 12 Now Available

Wednesday, March 26, 2008

We are happy to announce the release of the AdWords API Version 12 (V12).

V12 introduces several changes to the AdWords API. Below, you'll find the main highlights from this release. For a complete list of V12 changes, please see our release notes.


  • Conversion Optimizer support: Now you can enable Conversion Optimizer to pay only when an ad click leads to a conversion to adjust cost-per-acquisition bids through the AdWords API . Using Conversion Optimizer requires conversion tracking to be enabled on an existing campaign with at least 200 conversions in the past 30 days.
  • CPC bidding for placement-targeted ads: Now you can use Website.maxCpc or
    AdGroup.siteMaxCpc to pay only when a user clicks on your placement-targeted ad.
  • Expanded code sample library: As mentioned in a previous blog post, we have released 140 new code samples, 20 in 7 programming languages. Check out it out at

V11 SUNSET IN 2008

Per our versioning policy, V11 will be supported for four months from today, after which time it will be turned off. Therefore, please make sure that you upgrade to V12 before July 26, 2008. As with every new version of the AdWords API, we strongly encourage you to review the Release Notes section of the Developer's Guide to learn more about this version.

UPDATE: April 2, 2008

Please note that now you can enable Conversion Optimizer to adjust cost-per-acquisition bids through the AdWords API. The way this feature was initially described was inaccurate. We apologize for the confusion.

-- Borana Toska, Product Marketing

New Sample Code, and Lots of It!

Monday, March 17, 2008

Whether you're making your first API call or troubleshooting some crufty SOAP plumbing, we hope doing so is about to get a whole lot easier. Today, we're releasing 140 new code samples — 20 each in 7 (programming) languages. We redesigned the samples so they'd be:

  • simpler — every file has a discrete task and a minimum of external dependencies to better illustrate how it works,
  • more comprehensive — all the API's representative methods and most popular client languages are covered, and
  • more reliable — the code is normalized across languages for less expensive maintenance and updates.

Give them a try and tell us what you think!

You can download the latest sources from the AdWords API website.

— Brian Kennish, Developer Programs Engineer

AdWords Downtime: March 8, 10am-2pm PST

Tuesday, March 04, 2008

We'll be performing routine system maintenance on Saturday, March 8 from approximately 10:00am to 2:00pm PST. You won't be able to access AdWords or the API during this time frame, but your ads will continue to run as normal.

-Jeffrey Posnick, AdWords API Team