{"success":true,"enabled":true,"protocol":"x402","version":1,"description":"Pay per API call with USDT. Send payment, then retry with proof headers.","pricing":{"aml_check":{"price":1.5,"currency":"USDT"},"bulk_check":{"price_per_address":0.01,"currency":"USDT"}},"how_to_use":{"step1":"POST /api/v1/aml-check with { \"address\": \"T...\" } — receive 402 with payment details","step2":"Send USDT to the provided address","step3":"Retry same request with headers: X-Payment-Request-Id, X-Payment-Tx-Hash, X-Payment-Network"}}