{"uid":"cap_-dZswnkeYN6FKw8JR1uHj","slug":"halowerk-marktwerk-deribit-dated-futures-basis-calculator-bd1356d7","name":"HALOWERK marktwerk – Deribit Dated Futures Basis Calculator","description":"Reads the dated futures of Deribit for BTC or ETH and compares each expiry with a spot price whose source is always named in the answer, because a basis computed against a different venue than the future is a different number. By default the Deribit index is used, which sits on the same venue as the contract; choosing a spot venue instead is possible and is then flagged, including the case where that venue quotes in USDT while the contract settles in USD. Annualization only happens above one day","url":"https://markt.halowerk.com/basis","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"venue":{"enum":["deribit"],"type":"string","default":"deribit","description":"Futures venue. Only Deribit is connected here."},"symbol":{"type":"string","pattern":"^(BTC|ETH|btc|eth)/(USD|usd)$","description":"Underlying as BASE/USD, so BTC/USD or ETH/USD. Deribit settles its dated futures in USD."},"expiries":{"type":"string","default":"alle","description":"alle for every open expiry, naechste for the nearest one, or an exact date as YYYY-MM-DD."},"spot_source":{"enum":["deribit_index","binance","coinbase","kraken","okx","bybit"],"type":"string","default":"deribit_index","description":"Where the spot price comes from. deribit_index sits on the same venue as the contract; anything else is flagged as a cross venue basis."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9_4UA2RJe4LR_4_JNWVJK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches Deribit dated futures prices for BTC or ETH and computes the basis (spread) against a named spot price source, with annualization and cross-venue flagging.","exampleAgentPrompt":"Pull the current Deribit basis for all BTC/USD dated futures using the Deribit index as the spot reference and show me the annualized basis for each expiry.","exampleUseCases":[{"title":"Carry trade opportunity scanner","prompt":"Show me the annualized basis for every open BTC/USD dated futures on Deribit, using the Deribit index as the spot price, so I can spot the best carry trade entry."},{"title":"Cross-venue basis with spot exchange","prompt":"What's the basis between Deribit ETH/USD dated futures and Coinbase spot right now? Flag any cross-venue discrepancies and give me the annualized number for each expiry."},{"title":"Nearest expiry ETH basis check","prompt":"Fetch just the nearest ETH/USD Deribit futures expiry and tell me the basis versus the Deribit index — I just need a quick snapshot for my daily report."}],"resultDescription":"Returns one row per matching Deribit expiry containing: the expiry date, the futures price, the spot price (with source clearly labeled), the absolute basis, the annualized basis (omitted for same-day expiries), and a flag if the spot source is a different venue or quotes in USDT rather than USD.","failureModes":["Invalid symbol format (must be BTC/USD or ETH/USD case-insensitive) returns a validation error","Specific YYYY-MM-DD date with no open Deribit contract on that date returns empty or error","Deribit API unavailability causes fetch failure","Selected spot exchange (e.g. Kraken) is temporarily unreachable, preventing cross-venue basis computation","Bybit or OKX spot returns USDT price — endpoint flags this but still computes; callers should be aware of the USD/USDT discrepancy"],"whenToPreferThis":"Choose this endpoint when you need Deribit-specific dated futures basis computations with explicit spot-source attribution and annualization. It is purpose-built for crypto basis trading analysis on Deribit and handles USD/USDT discrepancy flagging automatically. Prefer it over generic ticker or order-book endpoints when the goal is term-structure or carry analysis, not just price lookup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:30:50.108Z","isFirstParty":false}