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Business Day Calculator API
x402
Business Day Calculator API is a paid API for AI agents from x402-ja-api.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Calculates business days for a given country and date, with support for holidays, custom weekends, and adding/subtracting business days.
Price / call$0.005
Success—
StatusUnknown
How this service works
Calendar and Japan data APIs for AI agents: worldwide holidays and business days (200+ countries), plus Japanese text-to-structure (address, name, bank, company normalization). Pay per call in USDC via x402, no API key.
Output
A JSON object containing the resolved result date after adding/subtracting business days, the weekday name, whether the base date is a business day or weekend, the next and previous business days, the weekend days for that country, and any public holidays on or between dates.
Example use cases
Payment settlement date calculation
“I need to know what date a payment will settle if it's initiated on March 14, 2025 and takes 3 business days to clear in the UK — make sure you skip weekends and holidays.”
SLA deadline for customer support
“Our SLA says we have 10 business days to resolve a support ticket opened on January 20, 2025 in France. What is the deadline date?”
Checking if a date is a working day in Japan
“Is April 29, 2025 a business day in Japan? And if not, what's the next business day after it?”
Technical details
Endpoint
GEThttps://x402-ja-api.onrender.com/v1/business-dayWhen to prefer
Choose this endpoint when you need to calculate business days across 200+ countries with accurate public holiday data, custom weekend configurations, or banking holiday support — especially when you need to add or subtract a specific number of business days from a date. It is ideal for scheduling, SLA tracking, financial settlement calculations, and delivery date estimation globally, and requires no API key (pay-per-call in USDC via x402).
Side effects
- Missing required 'country' query parameter returns an error
- Invalid country code (not ISO 3166-1 alpha-2) causes a validation failure
- Date format not in YYYY-MM-DD format returns a parse error
- 'add' value outside -2000 to 2000 range is rejected
- Payment not provided or insufficient USDC balance results in 402 Payment Required
- Invalid region/subdivision code may return an error or be silently ignored
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"add": 1,
"date": "2026-12-24",
"region": null,
"result": "2026-12-28",
"country": "DE",
"weekday": "Thursday",
"weekend": [
6,
0
],
"holidays": [],
"isWeekend": false,
"isBusinessDay": true,
"nextBusinessDay": "2026-12-28",
"previousBusinessDay": "2026-12-23"
}
}Tags
x402
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