{"uid":"cap_-o2RhsZjnXhBXtqh6ySbC","slug":"quantaflow-x402-api-gateway-coinranking-proxy-72618455","name":"QuantaFlow x402 API Gateway – CoinRanking Proxy","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/rapid-coinranking1","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"body":{"type":"string","description":"Optional JSON body forwarded to POST requests."},"path":{"type":"string","description":"Path below the selected upstream origin."},"query":{"type":"object"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"description":"The upstream response body and content type are passed through after successful payment."},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/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_Xv81Whou75JPSSSBziHVG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Proxies requests to the CoinRanking cryptocurrency data API via x402 micropayment protocol, charging $0.01 USDC per call","exampleAgentPrompt":"Pull the current top 10 cryptocurrencies by market cap from CoinRanking — I want their names, prices, and 24-hour change percentages.","exampleUseCases":[{"title":"Real-time crypto price dashboard","prompt":"Get me the latest prices and market caps for Bitcoin, Ethereum, and Solana from CoinRanking so I can update my portfolio tracker."},{"title":"DeFi token research tool","prompt":"Look up the top 20 DeFi tokens ranked by market cap on CoinRanking, including their 24-hour volume and price changes."},{"title":"Coin search for trading bot","prompt":"Fetch details for the coin with symbol 'AVAX' from CoinRanking — I need its current price, all-time high, and circulating supply."}],"resultDescription":"The raw upstream CoinRanking API response passed through after successful x402 micropayment, including cryptocurrency rankings, prices, market caps, trading volumes, and other coin metadata in JSON format.","failureModes":["Payment failure: insufficient USDC balance or wallet not configured for x402 protocol","Invalid path: upstream CoinRanking endpoint not found (404)","Rate limiting: RapidAPI quota exceeded on the upstream key","Malformed query parameters causing upstream API errors","Network timeout proxying to CoinRanking upstream"],"whenToPreferThis":"Choose this endpoint when you need cryptocurrency market data (rankings, prices, volumes) and are operating in a web3/DeFi environment with x402 micropayment capability. Ideal for agents that already have USDC wallet infrastructure and want pay-per-call access to CoinRanking data without a monthly API subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:58:36.420Z","isFirstParty":false}