{"uid":"cap_jP7sLj_FvKWYhgHypbVoX","slug":"binance-futures-funding-rate-mark-price-lookup-ae5bf8b1","name":"Binance Futures Funding Rate & Mark Price Lookup","description":"Real-time perpetual funding rates + mark price for any Binance futures symbol. Essential for delta-neutral and basis-trading agents. Free source, deterministic, instant JSON. $0.01 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.","url":"https://funding-rates.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"symbol":{"type":"string","description":"symbol"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"funding-rates","result":{"symbol":"BTCUSDT","mark_price":"64266.30000000","last_funding_rate":"0.00009163","next_funding_time":1783699200000},"provenance":{"url":"https://fapi.binance.com/fapi/v1/premiumIndex","source":"SYNTHORA Perp Funding Rates"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uSW0Ew2MERsbg8m8rHm1d","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time perpetual funding rate and mark price for a specified Binance futures symbol","exampleAgentPrompt":"What's the current funding rate and mark price for BTCUSDT perpetual futures on Binance right now?","exampleUseCases":[{"title":"Monitor funding rates for delta-neutral strategy","prompt":"Check the current funding rate for ETHUSDT perpetual futures on Binance — I need to know if it's worth holding my delta-neutral position right now or if the carry cost is eating into my returns."},{"title":"Spot funding rate arbitrage opportunity","prompt":"What are the funding rates for SOLUSDT and BNBUSDT perps on Binance right now? I want to see which one has the most extreme rate so my arbitrage bot can prioritize where to open a position."},{"title":"Assess basis trading entry conditions","prompt":"Pull the mark price and funding rate for BTCUSDT perpetual futures — I'm trying to figure out whether the current basis makes this a good entry point for a basis trade before the next funding settlement."}],"resultDescription":"Returns real-time perpetual funding rate and mark price for the requested Binance futures symbol as JSON, enabling traders and agents to assess carry costs and basis for delta-neutral or funding-rate arbitrage strategies.","failureModes":["Invalid or unrecognized symbol returns an error response","Upstream Binance API unavailability may return a no-charge failure response","Malformed symbol string (e.g. wrong case or nonexistent pair) returns no data","Network timeout on upstream Binance data feed"],"whenToPreferThis":"Use this endpoint when you need real-time Binance perpetual futures funding rates and mark prices for delta-neutral trading, basis trading, or funding rate arbitrage strategies. Prefer this over exchange REST APIs when you need a simple, deterministic JSON response with x402 micropayment support and a no-charge guarantee on upstream failure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:33:31.062Z","isFirstParty":false}