Add the ability to create, delete and add product options to your catalog via Magento’s API. Why this type of functionality is not built-in to the existing Magento API is beyond me. However it seems Panticz.de has put together something for us who would like to have said functionality in the API:
:!: I have not used this myself, but while in effort to find some ability to easily create options on the fly, I happened to stumble upon this as it was pretty buried in Google results. The posting looks to be almost a year old, so I’m not confident it can offer much help with current version of Magento. If anyone takes a stab at using it let me know if it works for ya or not.