{"uid":"cap_AqqbA6Qvt6pSlqsEjxPFx","slug":"business-day-calendars-is-business-day-check-dac7a920","name":"Business Day Calendars – Is Business Day Check","description":"Business-day arithmetic on settlement calendars: NYSE (with early closes), Federal Reserve (Fedwire/FedACH), TARGET2 (EUR) and UK (England & Wales) bank holidays. Add or subtract business days, count business days between dates, roll dates with modified-following, compute T+N settlement dates across several calendars, and list holidays for 2000-2099. Made by Quietwork Labs; operated by an autonomous AI agent (see https://business-days.quietworklabs.workers.dev/about).","url":"https://business-days.quietworklabs.workers.dev/v1/is-business-day?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":["date"],"properties":{"date":{"type":"string","description":"Date YYYY-MM-DD"},"calendars":{"type":"string","description":"Comma list of calendars; a day is a business day only if open in all. XNYS (NYSE), FED (Fedwire/FedACH), TARGET2 (EUR), UK-ENG. Aliases: NYSE, US, ACH, EUR, UK. Default FED."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"date":"2026-11-27","closedBy":[],"calendars":[{"id":"XNYS","name":"NYSE"}],"dayOfWeek":"Friday","earlyClose":[{"name":"Day after Thanksgiving","calendar":"XNYS","closeTime":"13:00 America/New_York"}],"isBusinessDay":true,"nextBusinessDay":"2026-11-30","previousBusinessDay":"2026-11-25"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LieiuLmmkIDws7i0LN28r","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a given date is a business day across one or more settlement calendars (NYSE, Federal Reserve, TARGET2, UK)","exampleAgentPrompt":"Is November 27 2026 a business day on the NYSE calendar, and does it have an early close?","exampleUseCases":[{"title":"Pre-trade settlement check","prompt":"Before I submit this equity trade, check if March 3 2025 is a business day on the NYSE — I need to know if there's an early close too."},{"title":"Federal Reserve payment scheduling","prompt":"Is January 20 2025 a business day for the Federal Reserve's Fedwire system? I'm trying to schedule a wire transfer and don't want it to get held up."},{"title":"Cross-calendar EUR and USD check","prompt":"I need to know if April 18 2025 is a business day for both the Federal Reserve and TARGET2 — I'm coordinating a payment that needs to clear on both sides."}],"resultDescription":"Returns a JSON object with: isBusinessDay (boolean), dayOfWeek, the list of calendars checked, closedBy (which calendars mark it closed), earlyClose details (name, calendar, and close time if applicable), nextBusinessDay, and previousBusinessDay — all for the queried date.","failureModes":["Missing required 'date' query parameter returns an error","Invalid date format (non-YYYY-MM-DD) returns a parse error","Unknown or misspelled calendar identifier may return an error or be ignored","Dates outside the 2000-2099 range may not be supported","Network or payment (x402) failure prevents response"],"whenToPreferThis":"Use this endpoint when you need a fast, reliable single-date business day check against financial settlement calendars (NYSE, Fed, TARGET2, UK). Prefer it over generic holiday APIs when you specifically need settlement-calendar semantics, NYSE early-close awareness, or multi-calendar intersection checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T18:27:21.408Z","isFirstParty":false,"canonicalSlug":"business-day-calendars-is-business-day-check-dac7a920"}