If you are building out your own index, might you consider offering it as an API via pre-paid credits (ala Mojeek, Kagi Teclis?)

I'm only paying Mojeek about $10 - $20 per year in API for my personal metasearch, so I guess this is a terrible market to enter ;) But I'd genuinely be interested, especially if the money is going towards building an index.

Uruky does exactly that (it has an API and any searches fund the search providers directly). If you want to _exclusively_ use Uruky Site Search (our index), though, that'd be impossible as it's too small to be used as an exclusive provider. Probably in the future that'll be possible, though.

I'd recommend you look into any of our other search providers if you just want the API search!