SiteCheck Business Days Calculator

x402

SiteCheck Business Days Calculator is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-16).

Calculates the number of working days between two dates, or adds/subtracts business days from a date, accounting for weekends and public holidays by country.

Price / call$0.001

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StatusUnknown

How this service works

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Output

Returns a JSON object with the computed working days count, calendar days count, the from/to dates, mode used, country, list of holidays skipped (with names and dates), weekend day numbers, and a timestamp of when the check was performed.

Example use cases

Contract payment deadline calculation

“I signed a contract today, January 15 2025, that requires payment within 30 business days. What is the actual due date in the US, skipping weekends and holidays?”

Cross-border delivery SLA check

“How many working days are between March 1 and March 31 2025 in France? I need to know if our 20-business-day SLA is achievable within that calendar month.”

Legal notice period calculation

“I need to send a legal notice in Israel with a 14 business day response window starting April 7 2025 — what date does the deadline land on?”

Technical details

Endpoint

GEThttps://api.sitecheck-api.workers.dev/api/business-days?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need accurate business day calculations that account for both weekends and country-specific public holidays. It supports multiple countries via ISO codes and offers two modes: counting days between two dates, or projecting a future/past date by a number of working days. Prefer it over manual calendar math or generic date libraries when holiday accuracy per country matters, such as for legal deadlines, SLA tracking, or financial settlement dates.

Side effects

Missing required 'country' query parameter returns an error
Invalid country code (not ISO 3166 alpha-2) may return no holiday data or an error
Missing 'from'/'to' for 'between' mode or missing 'date'/'days' for 'add' mode returns an error
Days value exceeding 3,650 is rejected
Invalid date format (not YYYY-MM-DD) causes a parse error
Payment failure via x402 protocol prevents response

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "to": "2027-01-06",
    "from": "2026-12-18",
    "mode": "between",
    "source": "Computed here; public holidays: Nager.Date (nationwide holidays only)",
    "counted": "after from, up to and including to",
    "country": "DE",
    "checkedAt": "2026-10-15T14:00:29.548Z",
    "weekendDays": [
      0,
      6
    ],
    "workingDays": 11,
    "calendarDays": 19,
    "holidaysSkipped": [
      {
        "date": "2026-12-25",
        "name": "Erster Weihnachtstag"
      },
      {
        "date": "2027-01-01",
        "name": "Neujahr"
      }
    ]
  }
}

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