{"uid":"cap_k8Nrt78sYnj1mNr_dJi-V","slug":"fundingfeed-cross-exchange-perpetual-funding-rate-open-interest-daa48504","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/perp-oi?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_OkshwLiQADZx2Xt2SOcCt","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+ crypto exchanges (OKX, Bybit, Gate.io, HTX, Hyperliquid, BingX, Bitget, Kraken, Coinbase, MEXC) for BTC, ETH, or SOL in a single call","exampleAgentPrompt":"What's the cross-exchange funding rate spread for BTC right now — which venue has the highest annualized rate, which has the lowest, and what's the arb spread? Also give me total open interest and the best bid/ask across all venues.","exampleUseCases":[{"title":"Cash-and-carry arb timing","prompt":"I'm planning a BTC cash-and-carry trade — show me current funding rates across all major perp exchanges, the annualized arb spread between the highest and lowest venue, and when the next funding settlement hits on each one so I can time my entry."},{"title":"Crowded positioning detection","prompt":"How crowded is the ETH perpetual market right now? Give me total open interest in USD broken down by exchange so I can see where the biggest positions are concentrated."},{"title":"Best execution venue routing","prompt":"I want to buy SOL perpetuals — which exchange has the best ask price right now, and what's the current bid-ask spread across all venues so I can minimize slippage?"}],"resultDescription":"Returns a JSON object with: the queried symbol, per-exchange funding rates with annualized percentages and next funding timestamps, aggregate stats (min/max/mean annualized funding, cross-venue arb spread percentage, exchange count), total open interest in USD with per-exchange breakdown and mean, and best-execution data including per-venue top-of-book bid/ask/last prices, the best global bid and best global ask with their source exchange, and the overall spread percentage. Also includes a generatedAt timestamp and count of exchanges that responded successfully.","failureModes":["One or more exchange APIs down — exchangesOk count lower than exchangesQueried, partial data returned","Symbol not supported — may return empty or error if coin is outside BTC/ETH/SOL scope","Rate limiting or payment failure — 402 response if USDC payment not processed","Stale data — exchange latency may cause slight timestamp drift across venues","Network timeout on Cloudflare Worker — 504 or empty response if upstream APIs are slow"],"whenToPreferThis":"Choose this endpoint when you need a single-call cross-exchange view of perpetual funding rates, open interest, and best execution for BTC, ETH, or SOL — especially for funding arbitrage strategy research, carry cost analysis, or order routing decisions. Prefer it over querying individual exchange APIs when you need normalized, comparable data across 10+ venues simultaneously. Not suitable for spot markets, options, or assets outside BTC/ETH/SOL.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T00:43:57.982Z","isFirstParty":false,"canonicalSlug":"fundingfeed-cross-exchange-perpetual-funding-rate-open-interest-af86e743"}