{"uid":"cap_ac1FllUUOOE23_8XddVO4","slug":"synthora-open-interest-104cde33","name":"SYNTHORA Open Interest","description":"Real-time open interest and OI change for any Binance futures symbol. Positioning signal for derivatives agents. Free source. $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://crypto-derivatives-oi.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"symbol":{"type":"string","description":"symbol"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"crypto-derivatives-oi","result":{"time":1783774469314,"symbol":"BTCUSDT","open_interest":"103679.944"},"provenance":{"url":"https://fapi.binance.com/fapi/v1/openInterest","source":"SYNTHORA Open Interest"}}},"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_Q9eRLW9mob4PiXfPyGFlO","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 real-time open interest and open interest change for a specified Binance futures symbol, sourced live from Binance FAPI.","exampleAgentPrompt":"What's the current open interest on BTCUSDT futures right now — I need the latest OI figure to gauge market positioning?","exampleUseCases":[{"title":"BTC futures positioning check","prompt":"Pull the real-time open interest for BTCUSDT futures so I can see how much derivatives exposure is currently in the market."},{"title":"Altcoin OI spike detection","prompt":"What's the current open interest on SOLUSDT Binance futures? I want to know if OI has been building up lately."},{"title":"Multi-symbol derivatives dashboard","prompt":"Fetch the latest open interest figures for ETHUSDT on Binance futures — I'm tracking positioning across several perp markets."}],"resultDescription":"A JSON object containing the query timestamp (Unix ms), the requested symbol, and the current open interest value as a numeric string (e.g. 103679.944 contracts). Sourced directly from Binance Futures REST API in real time.","failureModes":["Invalid or unsupported symbol returns an error or empty result","Binance API downtime or rate limiting may cause failures","Malformed request body missing the symbol field","Payment failure via x402 protocol prevents execution"],"whenToPreferThis":"Choose this endpoint when you need real-time open interest data for Binance futures symbols specifically, especially in a cost-efficient micropayment context via x402. It is ideal for derivatives-focused agents that need a fast, single-symbol OI lookup without managing direct Binance API credentials.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:37:23.308Z","isFirstParty":false}