This is a fast and loose REST style search API. Use a GET post to a url of the following format. Check the source code of this page for an example:
...or 'tiny' with xml results:
...or with js results. You can optionally provide the name of a callback function.
This is a whole word search, meaning that whatever you enter will be regex matched in the database with word boundary markers on each side. So for example, searching for "eye" versus "eyes" will turn up totally different sets.