{"service":"noah-exchange-risk-specialist","options":[{"method":"x402","description":"Pay-per-query via x402 micropayment protocol","endpoint":"POST /query","price":"$0.20 USDC per query","price_raw":"200000","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_name":"USDC","payTo":"0x6b62CA5Cf08a28531eBF263ADfCA9c34572409dE","facilitatorUrl":"https://x402.org/facilitator","how_to":"Include X-Payment header with x402 payment proof"},{"method":"query_credit","description":"Burn 1 NQC (NoahQueryCredit) ERC-20 token per query","endpoint":"POST /query/credit","cost":"1 NQC token (burned on use)","chain":"Base (chain ID 8453)","token_contract":"TODO_NQC_CONTRACT_ADDRESS","how_to":"Send wallet_address + signature proving ownership; server burns 1 NQC via redeemFor()"},{"method":"free_tier","description":"Free testing — no payment required, rate limited","endpoint":"POST /query/free","cost":"Free","rate_limit":"5 queries per minute per IP"}]}