{"uid":"cap_3I_b0PxYZMM39qONEX0vY","slug":"speraxos-crypto-etfs-data-api-9ba2f6e7","name":"SperaxOS Crypto ETFs Data API","description":"AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.","url":"https://chat.sperax.io/api/x402/v1/data/crypto-etfs?utm_source=zero.xyz","method":"HEAD","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nWgSkDw0Hq2U5NHhmzyC8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0xD74f5255D557944cf7Dd0E45FF521520002D5748","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves AI-powered intelligence data on crypto ETFs, payable per-request via x402/USDC on Base","exampleAgentPrompt":"Pull the latest crypto ETF data from SperaxOS — I want to see what funds are listed and their key details, and pay per request with USDC on Base.","exampleUseCases":[{"title":"Crypto ETF portfolio research","prompt":"Give me a full list of crypto ETFs available right now with their key details — I'm researching which ones to track for my portfolio."},{"title":"DeFi dashboard ETF feed","prompt":"Fetch the current crypto ETF data from SperaxOS so I can display it on my DeFi dashboard, paying with USDC on Base."},{"title":"Automated ETF monitoring agent","prompt":"Every hour, grab the latest crypto ETF data from the SperaxOS x402 API and alert me if any new funds appear or if metadata changes."}],"resultDescription":"Returns structured data about crypto ETFs available in the market, including fund metadata and AI-curated DeFi intelligence, delivered as a response to a per-request USDC micropayment via the x402 protocol on Base.","failureModes":["Payment insufficient or missing — returns HTTP 402 with payment requirements","Invalid or missing Base wallet — request rejected","No ETF data available matching filters — empty result set","Network or provider downtime — 5xx error","Malformed properties filter — 400 bad request"],"whenToPreferThis":"Choose this endpoint when you need on-demand, pay-per-use crypto ETF intelligence without managing API keys, especially in autonomous agent workflows operating on Base with USDC micropayment capability via the x402 protocol.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:49:54.453Z","isFirstParty":false,"canonicalSlug":"speraxos-crypto-etfs-data-api-9ba2f6e7"}