{"uid":"cap_Kh1s8qKr2a6owUI3IpUME","slug":"v0-x402-payments-demo-vercel-app-a7c0686a","name":"v0-x402-payments-demo Premium Alpha Feed","description":"Premium alpha — Curated on-chain alpha: yield venues, mempool anomalies, and replayable agent trade intents.","url":"https://v0-x402-payments-demo.vercel.app/api/premium","method":"GET","headers":{},"bodySchema":{"type":"object","required":["currency","endpoint","paymentAmount"],"properties":{"currency":{"type":"string"},"endpoint":{"type":"string"},"paymentAmount":{"type":"string"}}},"responseSchema":{"type":"object","required":["_x402","error","accepts","x402Version","_paymentRequired","_wwwAuthenticate"],"properties":{"_x402":{"type":"boolean"},"error":{"type":"string"},"accepts":{"type":"array","items":{"type":"object","required":["asset","extra","payTo","scheme","network","mimeType","resource","description","outputSchema","maxAmountRequired","maxTimeoutSeconds"],"properties":{"asset":{"type":"string"},"extra":{"type":"object","required":["name","version"],"properties":{"name":{"type":"string"},"version":{"type":"string"}}},"payTo":{"type":"string"},"scheme":{"type":"string"},"network":{"type":"string"},"mimeType":{"type":"string"},"resource":{"type":"string"},"description":{"type":"string"},"outputSchema":{"type":"object","required":["input"],"properties":{"input":{"type":"object","required":["type","method","discoverable"],"properties":{"type":{"type":"string"},"method":{"type":"string"},"discoverable":{"type":"boolean"}}}}},"maxAmountRequired":{"type":"string"},"maxTimeoutSeconds":{"type":"number"}}}},"x402Version":{"type":"number"},"_paymentRequired":{"type":"boolean"},"_wwwAuthenticate":{"type":"null"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"unknown","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_b37zuXBieHG7WLjCJw3Pu","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns curated on-chain alpha including yield venues, mempool anomalies, and replayable agent trade intents, gated by a $0.01 USDC x402 micropayment.","exampleAgentPrompt":"Fetch me the latest on-chain alpha — yield venues, mempool anomalies, and any replayable trade intents — paying 0.01 USDC via the x402 micropayment protocol.","exampleUseCases":[{"title":"Discover high-yield DeFi venues","prompt":"Check the latest curated yield venues on-chain and tell me which ones are currently offering the most attractive returns — go ahead and pay the micropayment to get the premium data."},{"title":"Alert on mempool anomaly signals","prompt":"Scan for any unusual mempool activity or anomalies right now and surface anything that looks like a trading opportunity — use the x402 payment to unlock the live intelligence feed."},{"title":"Retrieve replayable agent trade intents","prompt":"Pull the most recent replayable agent trade intents from the on-chain alpha feed so I can evaluate which ones are worth executing — pay the 0.01 USDC fee to access them."}],"resultDescription":"A JSON payload containing curated on-chain alpha: yield venues currently offering attractive returns, detected mempool anomalies, and replayable agent trade intents, along with x402 payment metadata confirming the transaction was accepted.","failureModes":["Missing X-PAYMENT header returns 402 with error 'X-PAYMENT header is required' and accepts array listing USDC on Base","Insufficient payment amount causes rejection with maxAmountRequired mismatch","Expired payment timeout (maxTimeoutSeconds: 60) causes payment to be rejected","Invalid USDC asset address or wrong network (not Base) causes payment failure","Malformed currency or paymentAmount fields cause request rejection"],"whenToPreferThis":"Use this endpoint when an AI agent needs live, curated on-chain intelligence — specifically yield venue discovery, mempool anomaly alerts, or tradeable agent intents — and is capable of executing x402 micropayments in USDC on Base. Prefer this over general blockchain explorers or free-tier data feeds when you need pre-curated, actionable alpha rather than raw chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:39:23.487Z","isFirstParty":false}