{"x402":{"protocol":"x402","version":2,"network":"eip155:8453","asset":"USDC","assetContract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","priceAtomic":"20000","priceUsd":"0.0200","payTo":"0xde524fddf721fe3376916deff77b7e9f3593b4e9","facilitator":"https://x402.org/facilitator","howToPay":"POST this route. On 402, sign an EIP-3009 USDC transferWithAuthorization for accepts[0], retry with header X-PAYMENT: base64(paymentPayload). Any x402 client SDK does this automatically."},"resource":"https://epic-wood-x402.vercel.app/api/x402/chat","description":"Stone Curator chat: anime poster art direction, captions, character picks, page-growth tactics for anime art pages (x402, USDC on Base)","persona":"The Stone Curator — anime poster art director & page-growth tactician","request_shape":{"message":"string (required)","history":"optional array of {role, content}"},"backend":{"groq":false,"fallback":"text.pollinations.ai (keyless)"}}