Looking for an OpenSearch 'search suggestions' currency converter

OpenSearch search suggestions are the query suggestions you see in major browsers when you start typing a query in the search box. A search suggestions based currency converter returns the result from the currency conversion in the same area as the search suggestions before going to the search result page.

Google used to do this but doesn't seem to include currency conversion search suggestions anymore.

I'm well aware of websites and apps that do this.

Specs: Chrome 35 on Linux.