{"uid":"cap_GOIgXINR_o0QeCbx-F66Q","slug":"halowerk-marktwerk-open-interest-9f17931b","name":"HALOWERK marktwerk Open Interest","description":"HALOWERK marktwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.","url":"https://markt.netzhandwerker.de/open-interest","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"symbol":{"type":"string","pattern":"^[A-Za-z0-9]{2,15}/[A-Za-z0-9]{2,15}$","description":"Perpetual as BASE/QUOTE, for example BTC/USDT."},"venues":{"type":"array","items":{"enum":["binance-futures"],"type":"string"},"maxItems":1,"minItems":1,"description":"Venues whose open interest this hub records. Only Binance USDⓈ-M Futures is recorded so far.","uniqueItems":true},"window":{"enum":["1h","4h","24h"],"type":"string","default":"1h","description":"Comparison window."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kBr3JuMK5la8OlEGnHW6g","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns open interest data for a perpetual futures trading pair on Binance USDⓈ-M Futures, with comparison over a configurable time window.","exampleAgentPrompt":"What's the open interest for BTC/USDT on Binance futures right now, and how has it changed over the last 4 hours?","exampleUseCases":[{"title":"Pre-trade open interest check","prompt":"Before I enter a long position, can you pull the current open interest for ETH/USDT on Binance futures and show me how it's shifted over the past 24 hours?"},{"title":"Crypto market sentiment monitoring","prompt":"I want to keep an eye on market sentiment — fetch the BTC/USDT open interest from Binance futures and compare it over the last 1-hour window."},{"title":"Altcoin futures liquidity check","prompt":"Can you check the open interest for SOL/USDT on Binance USDⓈ-M futures over the past 4 hours? I want to see if there's enough liquidity building up."}],"resultDescription":"Returns current open interest figures for the specified perpetual futures symbol on Binance USDⓈ-M Futures, along with a comparison showing how open interest has changed over the requested window (1h, 4h, or 24h).","failureModes":["Invalid symbol format not matching BASE/QUOTE pattern returns validation error","Unsupported venue (only binance-futures is currently available)","Symbol not listed on Binance USDⓈ-M Futures returns not-found or empty result","Payment failure via x402/USDC causes 402 response and no data","Network timeout from upstream Binance data source"],"whenToPreferThis":"Use this endpoint when you need open interest data specifically for Binance USDⓈ-M perpetual futures with windowed comparison (1h, 4h, 24h). Prefer it for lightweight, pay-per-call access to derivatives market metrics without managing a Binance API key or WebSocket connection. Best suited for agents making infrequent or triggered lookups rather than continuous streaming.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:43:30.485Z","isFirstParty":false}