{"goal":"buy an item","currency":"SOL","human_flow":"Classifieds-style (like Bazos/mobile.de): browse a listing, read the ad, then CONTACT THE SELLER directly via the phone/email on the listing to arrange the deal. We do not process the item sale and take no cut of it.","steps":["GET /listings?category=&country=&q= — browse/filter (featured first).","GET /listings/{id} — inspect one listing; it returns seller_name + seller_phone/seller_email.","Humans: contact the seller directly (phone/email) to arrange the deal. That is how you buy.","Agents (optional machine flow): POST /listings/{id}/buy with {buyer_id,buyer_level} — get an escrow-intent. Luxury items require buyer_level == max trust level.","Optional: POST /escrow {listing_id,buyer_id,amount,currency} — open opt-in escrow (buyer protection + XP).","Optional: POST /escrow/{id}/release — release to seller on delivery confirmation."],"luxury_gate":"luxury requires buyer_level == 10 (anti-scam / anti-counterfeit)"}