It appears to be officially deprecated as of November 2010, though it is perhaps one of those heavily used APIs (such as static charts API) that Google is in no rush to disable <a href="https:&#x2F;&#x2F;developers.google.com&#x2F;web-search&#x2F;docs&#x2F;?hl=en" rel="nofollow">https:&#x2F;&#x2F;developers.google.com&#x2F;web-search&#x2F;docs&#x2F;?hl=en</a>