{"uid":"cap_cJxBFS21sA6RbWYGV0hti","slug":"4sec-futures-open-interest-by-symbol-f2384788","name":"4SEC Futures Open Interest by Symbol","description":"Real-time multi-DEX aggregated crypto market data. Pay per request with USDC on Base via x402 protocol.","url":"https://api.foursec.xyz/futures/open-interest/%7Bsymbol%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"object","example":{"symbol":{"type":"string"},"timestamp":{"type":"string","format":"date-time"},"by_exchange":{"type":"object"},"total_oi_usd":{"type":"number"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RhML3ysuT6PXTtFxWc5nh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns aggregated futures open interest for a given crypto symbol, broken down by exchange, with a total in USD.","exampleAgentPrompt":"What's the current futures open interest for BTC across all exchanges — give me the breakdown by exchange and the total in USD?","exampleUseCases":[{"title":"Monitor BTC futures market sentiment","prompt":"Pull the latest BTC futures open interest for me — I want to see how it's distributed across exchanges and the total open interest in USD right now."},{"title":"Assess ETH derivatives exposure","prompt":"What's the current open interest on ETH futures? Break it down by exchange so I can see where the biggest positions are sitting."},{"title":"Track open interest for altcoin","prompt":"Check the futures open interest for SOL across all exchanges and tell me the total USD value — I'm trying to gauge how crowded the trade is."}],"resultDescription":"A JSON object containing the queried symbol, a UTC timestamp, a breakdown of open interest by individual exchange, and the total aggregated open interest expressed in USD.","failureModes":["Unknown or unsupported symbol returns an error or empty result","Payment failure via x402 protocol results in a 402 Payment Required response","Network latency or exchange data feed delays may cause stale timestamps","Invalid symbol format (e.g. lowercase or with hyphens) may return an error"],"whenToPreferThis":"Use this endpoint when you need real-time, multi-exchange aggregated futures open interest for a specific crypto asset, especially when you want per-exchange breakdown and a USD total. Prefer this over spot volume endpoints when your question is about derivatives positioning rather than spot trading activity.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T08:26:35.575Z","isFirstParty":false}