{"usage":"GET https://api.agoranome.com/v1/policy/check?url=<the offer's URL>&tier=sampled&max_price=1.0","example":"https://api.agoranome.com/v1/policy/check?url=https://api.agoranome.com/v1/machine/ping&tier=sampled","what":"Fetches the offer's unpaid 402 and answers whether the open buyer policy would pay it: the price cap, the listing price, instruction-like text and the tier's proof (any, sampled or delivered), with the reasons. Nothing is paid or signed.","tiers":["any","sampled","delivered"],"policy":"https://api.agoranome.com/policy"}