I have an algo with a number of parameters (which could be coded in) with which I would like to automate backtesting variations.

For example, changing the call delta or days to expiration, stop loss, etc.

I have read a bit about an API on the forums and blog post, but I can't seem to find any documentation because the link from the blog to API is a 404. Was the API deprecated?

Are there recommendations for the best way to programmatically launch and compare parameter/variable performance for this situation, if it is even possible?