One question I usually ask goes like this: “Your ad states that you’re into Anal, Kissing, and Cum. Is that information accurate?” Then I follow up with “I’m a bottom who likes kissing and taking cum in my mouth, are you ok with that?”
If something I’m looking for is not on the ad, I would ask, “You have not listed Kissing in your “into” section, what can you say about that?”
I’ve mostly gotten satisfactory answers from such line of inquiring.