Ask HN: Looking for recommendations for document generation APIs

Can anyone recommend a good api for generating pdf documents? I'm thinking of something that you can provide with a template (maybe html) and a model and it spits out a pdf document. I know it's not too difficult to write one's own, I'm just curious.

Oh sorry. It seemed to not have gone off first time. Thanks for pointing out. Dont see an obvious way to delete though :(