Which screening platform could let me filter for, say, ratio spreads that are priced at 0?

I often like to sell ratio spreads (+1/-2 for small credits or typically even, i.e. the cost of the long leg is equal to the premium from the two short legs. Screening for these right now on Fidelity is annoying; I have to sort of eyeball it and click around constantly to tweak parameters. Is there any platform where I could, say, specify an expiry, a ratio on the legs, and filter for price ranges?