{"uid":"cap_hJsWIyK_QEG9LuVFVwg8p","slug":"hyperextend-hip-4-outcome-open-interest-per-minute-f0edaf68","name":"HyperExtend HIP-4 Outcome Open Interest (Per Minute)","description":"Derived two-sided open interest for a HIP-4 outcome market, per minute (circulating-supply times mark, summed over both sides). Priced per row ($0.000025 premium); served live. Takes the integer outcome id (e.g. 100).","url":"https://api.hyperextend.xyz/v1/outcome/100/oi","method":"GET","headers":{},"bodySchema":{"type":"object","$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","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","required":["outcome"],"properties":{"outcome":{"type":"string","description":"HIP-4 outcome market id (integer), e.g. 100"}}},"queryParams":{"type":"object","required":[],"properties":{"end":{"type":"integer"},"limit":{"type":"integer"},"start":{"type":"integer"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001000","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.001000/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.125725","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.125725","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6zUTiI6lQqbs1atmlIt75","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.125725","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns derived two-sided open interest data for a specified HIP-4 outcome market, sampled per minute, with optional time window and pagination.","exampleAgentPrompt":"Can you pull the per-minute two-sided open interest data for HIP-4 outcome market 100 on HyperExtend? I want the last 60 records.","exampleUseCases":null,"resultDescription":"Returns a time-series of derived two-sided open interest values for the specified HIP-4 outcome market, sampled at per-minute intervals. Each record includes open interest broken down by side, associated with the outcome market ID and a timestamp. Results can be paginated and filtered by start/end time.","failureModes":["Invalid or non-existent outcome market ID returns 404 or empty result","start/end timestamps out of range return empty dataset","limit parameter too large may be capped or return an error","Payment not provided or insufficient USDC results in 402 Payment Required","Malformed path parameter (non-integer outcome ID) returns 400 Bad Request"],"whenToPreferThis":"Use this endpoint when you need granular, per-minute open interest data specifically for HIP-4 outcome markets, particularly for monitoring market depth, analyzing two-sided exposure, or building time-series visualizations of OI trends. Prefer this over the windowed summary endpoint when you need raw minute-level resolution rather than aggregated statistics.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:30:36.364Z","isFirstParty":false}