{"uid":"cap_R6T9PiENel906WqxghO_9","slug":"fastapi-online-crypto-funding-rate-lookup-3e819bb7","name":"fastapi.online — Crypto Funding Rate Lookup","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/funding-rate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"symbol":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_coBWR9bqCed-n8MMdx7Zv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current perpetual futures funding rate for a given trading symbol","exampleAgentPrompt":"What's the current perpetual futures funding rate for BTCUSDT?","exampleUseCases":[{"title":"Pre-trade funding rate check","prompt":"Before I open a long position on ETH perps, what's the current funding rate for ETHUSDT so I can see if I'll be paying or receiving funding?"},{"title":"Arbitrage opportunity scan","prompt":"Can you pull the current funding rate for SOLUSDT? I want to see if there's a worthwhile cash-and-carry arb opportunity right now."},{"title":"Funding cost monitoring for open position","prompt":"I have an open perpetual futures position on BTCUSDT — what's the current funding rate so I can estimate my overnight holding cost?"}],"resultDescription":"Returns the current funding rate for the specified perpetual futures trading symbol, typically including the rate value (as a decimal or percentage), the symbol, and possibly a timestamp or next funding time.","failureModes":["Invalid or unrecognized symbol returns an error or empty result","Symbol not available on the underlying exchange data source returns null or 404-style error","Network timeout or self-hosted server downtime causes request failure","Missing 'symbol' field in request body may return a validation error"],"whenToPreferThis":"Use this endpoint when you need a quick, low-cost ($0.001 USDC per call) funding rate lookup for a specific perpetual futures symbol without requiring an exchange API key or account signup. Prefer it for lightweight, per-call use cases where you don't want to integrate directly with a centralized exchange API. Not ideal for bulk or streaming funding rate monitoring across many symbols at once.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:58:55.300Z","isFirstParty":false,"canonicalSlug":"fastapi-online-crypto-funding-rate-lookup-3e819bb7"}