{"uid":"cap_iRs3il51xHPnuXP4w_NLq","slug":"halowerk-calendar-workdays-api-acc62b1d","name":"Halowerk Calendar & Workdays API","description":"Feiertagsliste je Bundesland für DE, AT und CH, Werktagsprüfung, Werktage zwischen zwei Daten, Werktage addieren und Zeitzonen-Offset inklusive Sommerzeit.","url":"https://tools.halowerk.com/v1/calendar/workdays","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"to":{"type":"string"},"date":{"type":"string","description":"ISO-Datum für Werktagsprüfung"},"from":{"type":"string"},"year":{"type":"integer"},"region":{"type":"string","description":"Bundeslandkürzel, z. B. NW, BY, SN"},"country":{"enum":["DE","AT","CH"],"type":"string","default":"DE"},"timezone":{"type":"string","default":"Europe/Berlin"},"add_workdays":{"type":"integer","description":"Werktage auf date addieren"}}},"responseSchema":null,"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_fP9gVDTvq0LH56ed46Q-9","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":"Returns public holiday lists by German/Austrian/Swiss federal state, checks if a date is a workday, calculates workdays between two dates, adds workdays to a date, and returns timezone offsets including DST.","exampleAgentPrompt":"Is March 19 next year a workday in Bavaria (Germany), and if not, how many workdays are there between March 15 and March 25 in that state?","exampleUseCases":[{"title":"Payment deadline calculation for German invoices","prompt":"I need to add 14 workdays to the invoice date November 4, 2025 for a client in North Rhine-Westphalia, Germany — what date does that land on, accounting for public holidays in that state?"},{"title":"Cross-border project planning for DACH region","prompt":"How many working days are there between December 20, 2025 and January 10, 2026 in Bavaria, Germany, and in Zurich, Switzerland? I need to plan a project timeline that respects holidays in both countries."},{"title":"Automated holiday calendar for HR software","prompt":"Give me the full list of public holidays for 2026 in the Austrian state of Tyrol so I can load them into our HR system."}],"resultDescription":"Returns structured data including: public holiday lists with names and dates for the requested state/country, a boolean workday flag for a specific date, the count of workdays between two dates, a resulting date after adding N workdays, and/or a timezone offset value in hours/minutes including DST correction.","failureModes":["Invalid or unsupported country code returns an error","Unsupported Bundesland/canton identifier causes validation failure","Date format mismatch leads to parsing error","Future years beyond available holiday data may return incomplete results","Missing required fields in POST body returns 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need DACH-region (Germany, Austria, Switzerland) specific public holiday data at the federal-state (Bundesland/Kanton) level, or when you need to calculate business days, add workdays to a date, or get DST-aware timezone offsets for these countries. It is more precise than generic global calendar APIs because it has granular Bundesland-level holiday data for all three countries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:39:33.883Z","isFirstParty":false}