An application-programming interface (API) is a set of programming instructions and standards for accessing a Web-based software application. This would for example allow programmers to to access our data set via a webservice to build their own applications.
At present, we do not have an API. Apart from anything else, this would involve a major renegotiation of the terms of our data licence. We do have plans in this area but we need to reach further scale to make it worthwhile - at present, we've also too much work to do in other areas.
But we'll come back to this in due course. If you'd like to see an API added, please spread the word about our current service and please also feel free to vote for it here.