{"success":true,"protocol":"x402","payment_asset":"OKB","payment_network":"X Layer Mainnet (Chain ID 196)","payment_address":"0xDb82c0d91E057E05600C8F8dc836bEb41da6df14","verification":"on-chain via OKLink API + RPC fallback","replay_protection":true,"free_tools":["get_gas_price","get_block_info","get_market_overview","get_uniswap_top_pools"],"premium_tools":{"analyze_wallet":{"price_okb":0.001,"description":"AI wallet analysis + risk score"},"compare_wallets":{"price_okb":0.002,"description":"Side-by-side wallet comparison"},"find_arbitrage_opportunities":{"price_okb":0.001,"description":"Arbitrage opportunity scan"}},"how_to_pay":{"step1":"Send OKB to 0xDb82c0d91E057E05600C8F8dc836bEb41da6df14 on X Layer (Chain ID 196)","step2":"Copy the tx hash (0x...)","step3":"Include in X-PAYMENT header: X-PAYMENT: 0xYourTxHash","step4":"POST /mcp/call — AXON verifies tx on OKLink before executing"},"header_formats":["X-PAYMENT: 0x<64-hex-chars>  (raw tx hash)","X-PAYMENT: <base64('0x...')>  (base64 encoded)","X-PAYMENT: <base64(JSON{tx:'0x...'})>  (base64 JSON)"]}