{"schema_version":"1.0","purpose":"Complete one wallet-enabled x402 purchase without an account or buyer API key.","recommended_first_purchase":{"product":"TZ SELECT / 4H","method":"GET","url":"https://api.tradingzones.app/v1/signals/TZ-SELECT/4h","price_usdc":"0.03","max_payment_usdc":"0.03","network":"eip155:8453","network_name":"Base Mainnet","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"},"wallet_mcp":{"initiate_tool":"initiate_x402_request","initiate_arguments":{"url":"https://api.tradingzones.app/v1/signals/TZ-SELECT/4h","method":"GET","maxPayment":"0.03"},"approval":"Approve the exact USDC authorization returned by the wallet.","complete_tool":"complete_x402_request","complete_arguments":{"requestId":"<requestId returned by initiate_x402_request>"}},"cdp_typescript":{"example":"https://api.tradingzones.app/examples/buy-tz-select.ts","install":"npm install @coinbase/cdp-sdk @x402/core @x402/evm @x402/svm @x402/extensions @x402/fetch","required_environment":["CDP_API_KEY_ID","CDP_API_KEY_SECRET","CDP_WALLET_SECRET"],"note":"The production client uses Base Mainnet. Fund the payer wallet with native Circle USDC on Base."},"standard_products":["https://api.tradingzones.app/v1/signals/BTC/4h","https://api.tradingzones.app/v1/signals/ETH/4h","https://api.tradingzones.app/v1/signals/XRP/4h","https://api.tradingzones.app/v1/signals/ONDO/4h"],"success_contract":{"http_status":200,"required_fields":["schema_version","package_id","symbol","valid_until","levels","indicators"],"reject_if":["HTTP status is not 200","valid_until is in the past"]},"availability":{"on_503":"Wait for Retry-After and retry. Do not authorize payment while data is refreshing.","on_402":"Authorize only the exact challenge amount, not more than max_payment_usdc."}}