Is there an api to query recent NPM packages, as well as get a full list of packages?

It'd be interesting to write a tool that monitors as packages are added to npm, compare them against the existing list, and check for potential typo-squatting. Like, remove dashes, check Levenshtein distance, etc.

I mean, NPM themselves should be doing that but ... since they aren't, might as well do it for them, ya?