{"uid":"cap_rQjwM6Y6AlIEgxVlKFFgS","slug":"crypto-multi-venue-price-feed-link-usd-via-x402-b377e0e7","name":"Crypto Multi-Venue Price Feed (LINK/USD) via x402","description":"Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.","url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/price/link-usd?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"symbols":{"type":"string","examples":["BTC,ETH,SOL","BTC"],"description":"Comma-separated symbols (default BTC,ETH,SOL)"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"prices":{"BTC":{"price_usd":80867.7,"binance_usdt":80860,"coinbase_usd":80875.4,"change_24h_pct":1.2}},"sources":["https://api.binance.com","https://api.coinbase.com"],"updated_at":"2026-10-28T11:00:00Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Ouuh0pawxm22QTPHT4VY6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns aggregated LINK/USD spot prices from multiple exchanges (Binance, Coinbase) with 24h change, paid per-call via x402 USDC micropayment on Base.","exampleAgentPrompt":"What's the current LINK/USD price across Binance and Coinbase right now, including the 24-hour change percentage?","exampleUseCases":[{"title":"DeFi trading agent price check","prompt":"Before executing this LINK swap, fetch me the current LINK/USD price from both Binance and Coinbase so I can verify the on-chain price isn't too far off market."},{"title":"Crypto portfolio 24h change monitor","prompt":"Pull the latest LINK price data including how much it's moved in the last 24 hours — I want to know if it's up or down significantly today."},{"title":"Multi-symbol price comparison fetch","prompt":"Get me current USD prices for BTC, ETH, and LINK across Binance and Coinbase — I need the per-venue breakdown with timestamps."}],"resultDescription":"Returns a JSON object with per-symbol pricing data including Binance USDT price, Coinbase USD price, aggregated USD price, 24h percent change, list of source URLs, and an updated_at timestamp. Costs $0.003 USDC per call via x402 micropayment on Base.","failureModes":["Payment failure: x402 micropayment not accepted or wallet lacks USDC on Base — returns 402 Payment Required","Invalid symbol: unrecognized token ticker returns empty or error response","Upstream exchange API unavailable: partial or stale price data returned","Rate limiting or worker capacity issues on Cloudflare Workers host","Network timeout if exchange APIs are slow to respond"],"whenToPreferThis":"Choose this endpoint when an AI trading or onchain agent needs real-time LINK/USD price data aggregated from multiple reputable venues (Binance + Coinbase) without requiring API key registration — paying per-call via USDC x402 micropayment on Base. Ideal for autonomous agents that need price verification before executing swaps, or lightweight price monitoring without a subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:22.837Z","isFirstParty":false,"canonicalSlug":"crypto-multi-venue-price-feed-link-usd-via-x402-b377e0e7"}