{"uid":"cap_xYOfqxuSJ6ujgXrnwinq4","slug":"fundingfeed-cross-exchange-perpetual-funding-rate-open-interest-6c69a5b8","name":"FundingFeed — Cross-Exchange Perpetual Funding Rate & Open Interest Aggregator","description":"Cross-exchange perpetual funding rate arbitrage, open interest, and best-execution for BTC/ETH/SOL. Aggregates live perpetual venues (OKX, Bybit, Gate.io, HTX, Hyperliquid, BingX, Bitget, Kraken, Coinbase, MEXC) into one call: current funding rate per venue, min/max/mean annualized funding, the cross-venue funding arbitrage spread, next funding time per venue, total open interest in USD with a per-venue breakdown, and real top-of-book best bid/ask. Use it to find the best funding rate arbitrage opportunity across exchanges, compare funding rates between Bybit and OKX for a specific coin, check annualized carry cost for a long/short funding arb, identify which exchange has the most negative funding rate right now, scan for cross-venue funding divergences in crypto perpetuals, monitor funding spreads to time a cash-and-carry strategy, detect crowded positioning from open interest, and route orders to the venue with the best price. Paid per call: 0.005 USDC on Base, Polygon, Solana or Tempo (MPP, no gas). FIRST CALL FREE per wallet — send header \"X-WALLET: 0x<your Base address>\" and get the full feed with no payment. Try it before you pay.","url":"https://funding-feed.kaminariouji.workers.dev/feed?utm_source=zero.xyz","method":"POST","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","POST"],"type":"string"},"queryParams":{"type":"object","additionalProperties":true}}},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"note":"Aggregated from public REST APIs. Not financial advice. Verify independently.","symbol":"BTCUSDT","funding":{"count":5,"byExchange":[{"exchange":"okx","annualizedPct":10.6,"nextFundingAt":"2026-09-21T08:00:00.000Z"}],"arbSpreadPct":7.23,"maxAnnualizedPct":10.95,"minAnnualizedPct":3.72,"meanAnnualizedPct":6.83},"exchangesOk":7,"generatedAt":"2026-09-21T00:00:00.000Z","openInterest":{"count":5,"meanUsd":2660000000,"totalUsd":13300000000,"byExchange":[{"oiUsd":5000000000,"exchange":"okx"}]},"bestExecution":{"prices":[{"ask":116010,"bid":116000,"last":116005,"exchange":"okx"}],"bestAsk":{"price":116010,"exchange":"okx"},"bestBid":{"price":116000,"exchange":"gate"},"spreadPct":0.0086},"exchangesQueried":11}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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_V-F-rAXuuV2PsTzsZrzwP","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Aggregates live perpetual funding rates, open interest, and best bid/ask across 10+ major crypto exchanges for BTC, ETH, and SOL in a single call","exampleAgentPrompt":"What are the current funding rates for BTC perpetuals across all major exchanges — show me the annualized spread between the highest and lowest venues, the total open interest, and the best bid/ask right now so I can evaluate a cash-and-carry arb?","exampleUseCases":[{"title":"Funding arb opportunity scanner","prompt":"Find me the best funding rate arbitrage spread for Bitcoin perpetuals right now — which exchange is paying the most and which is paying the least, and what's the annualized spread I could capture?"},{"title":"Open interest crowding alert","prompt":"Check the total open interest across all major perp exchanges for ETH and tell me how it's distributed by venue — I want to know if positioning looks crowded on any single exchange."},{"title":"Best execution routing for perp trade","prompt":"I'm about to open a SOL perp position — which exchange currently has the best bid/ask spread and tightest top-of-book price so I can route my order there?"}],"resultDescription":"Returns a JSON object containing: the queried symbol, per-exchange funding rates with annualized percentages and next funding timestamps, aggregate funding stats (min/max/mean annualized %, cross-venue arb spread %), total open interest in USD with per-exchange breakdown and count of venues, best bid/ask prices per exchange with best overall bid/ask identified and spread %, number of exchanges successfully queried, and a generation timestamp.","failureModes":["Upstream exchange API outages reduce exchangesOk count below total queried — partial data returned","Rate limiting or network errors from specific venues result in missing per-exchange entries","Symbol not supported (only BTC/ETH/SOL) returns error or empty response","Stale funding data if exchange APIs are slow to update near funding settlement times","Payment not processed (x402) results in 402 response blocking data access"],"whenToPreferThis":"Choose this endpoint when you need a single aggregated view of perpetual funding rates, open interest, and best execution across 10+ major exchanges simultaneously — avoiding the need to call each exchange API individually. Ideal for funding arbitrage analysis, cash-and-carry strategy timing, crowded positioning detection, and cross-venue order routing decisions for BTC, ETH, or SOL perpetuals.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:38:02.527Z","isFirstParty":false,"canonicalSlug":"fundingfeed-cross-exchange-perpetual-funding-rate-open-interest-af86e743"}