{"uid":"cap_jvLt1zXjYSRhCkQns-4g0","slug":"us-equity-options-expiration-calendar-9d992c21","name":"US Equity Options Expiration Calendar","description":"US monthly equity option expirations for a year: third Friday, moved to Thursday on a market holiday; flags triple witching.","url":"https://market-calendar.x402tookit.com/options-expiry?utm_source=zero.xyz","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"],"type":"string"},"queryParams":{"type":"object","required":["year"],"properties":{"year":{"type":"integer","description":"Year, 1990 to 2100"},"month":{"type":"integer","description":"Optional single month 1 to 12"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"year":{"type":["null","number"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"expirations":{"type":["array","null"],"items":{"type":"object","properties":{"date":{"type":["null","string"]},"month":{"type":["null","number"]},"shifted":{"type":["boolean","null"]},"quarterly":{"type":["boolean","null"]},"thirdFriday":{"type":["null","string"]}}}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LO6vuVfwbKYcMf6d6u0RB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns all US monthly equity option expiration dates for a given year, flagging triple witching months and any Friday-to-Thursday shifts caused by market holidays.","exampleAgentPrompt":"Can you pull up all the monthly equity options expiration dates for 2025, and flag which ones are triple witching or shifted due to a market holiday?","exampleUseCases":[{"title":"Planning options trades around expirations","prompt":"Give me the full list of US equity options expiration dates for 2026, including which ones fall on triple witching and whether any are shifted to Thursday because of a holiday."},{"title":"Checking a specific month's expiry","prompt":"What is the options expiration date for September 2024, and is it a triple witching date or does it fall on a regular third Friday?"},{"title":"Automating a trading calendar dashboard","prompt":"I need all monthly options expiry dates for 2025 — note which are triple witching months and flag any dates that got moved from Friday to Thursday because of a market holiday."}],"resultDescription":"Returns an array of monthly options expiration objects for the requested year (and optionally a single month), each containing: the expiration date, the canonical third Friday date, a boolean indicating if the date was shifted to Thursday due to a market holiday, and a boolean flagging quarterly/triple witching months. Also includes metadata such as year, data source, summary, disclaimer, and degraded-service flags.","failureModes":["Year out of supported range (1990–2100) returns an error","Missing required 'year' query parameter causes a 400-level error","Month parameter outside 1–12 returns a validation error","Service degraded flag set if holiday data source is unavailable","Unexpected network timeout if upstream calendar data is slow"],"whenToPreferThis":"Use this endpoint when you need structured, machine-readable US equity options expiration dates for a full year or specific month, including automatic holiday-shift detection and triple witching flags. Prefer this over manual calendar lookups or generic holiday APIs that don't account for options-specific rules like the Friday-to-Thursday shift or quarterly expirations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:15:02.250Z","isFirstParty":false,"canonicalSlug":"us-equity-options-expiration-calendar-9d992c21"}