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Business Days and Holidays
x402
Business Days and Holidays is a paid API for AI agents from api.stablecoingateways.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-28).
Check if a date is a business day, add/subtract business days, count business days between dates, or list public holidays for 250 countries, 630 subdivisions, and 31 stock exchanges (2025–2030).
Price / call$0.001
Success—
StatusUnknown
How this service works
Business days and public holidays: check if a date is a business day, add or subtract N business days, count business days between dates, or list holidays, for 250 countries, 630 subdivisions (e.g. US-NY, GB-ENG) and 31 stock exchanges, 2025-2030. Use for payment due dates, T+N settlement, delivery estimates and SLAs. Data: python-holidays (MIT). Signed receipt.
Output
A JSON object with the operation result (e.g. is_business_day boolean, computed result date, business day count, or list of holidays), along with metadata including the calendar used, weekend days, holidays skipped, and coverage years. An Ed25519-signed receipt with price, transaction hash, and request/response hashes is also returned for auditability.
Example use cases
T+2 trade settlement date
“We executed a trade on December 23 2026 on the NYSE — what is the T+2 settlement date? Use the FIN-XNYS exchange calendar.”
SLA due date for customer support
“A support ticket was opened on January 15 2026. Our SLA says we must respond within 5 business days. What's the due date using the US calendar?”
Holiday planning for EU operations
“Can you list all public holidays in Germany for 2026 so I can plan around them for our EU office operations?”
Technical details
Endpoint
GEThttps://api.stablecoingateways.com/v1/business-days?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative, multi-jurisdiction business day calculations covering 250 countries, regional subdivisions (e.g. US-NY, GB-ENG), and 31 stock exchanges with coverage through 2030. Ideal for financial settlement (T+N), SLA tracking, and due date computation where a signed audit receipt is required. Prefer over generic date libraries when jurisdiction-specific public holiday awareness and verifiable receipts are mandatory.
Side effects
- Invalid date format (not YYYY-MM-DD) returns a validation error
- Unsupported calendar code returns an error (only 250 countries, 630 subdivisions, 31 exchanges supported)
- Year out of supported range (outside 2025–2030) for op=list returns an error
- Missing required 'op' parameter defaults to 'check'; missing 'end' for op=between returns an error
- days value out of range (|days|>1000) for op=add returns a validation error
- Payment failure (insufficient USDC balance) results in 402 response with no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"op": "add",
"days": 3,
"start": "2026-12-23",
"result": "2026-12-29",
"source": "python-holidays (MIT) public/financial holiday data; observed-day rules as implemented ...",
"calendar": "US-NY",
"coverage": [
"2025-01-01"
],
"weekend_days": [
"Sun"
],
"holidays_skipped": [
{
"date": "2026-12-25",
"holiday": "Christmas Day"
}
]
},
"receipt": {
"v": 1,
"ts": "2026-10-22T09:00:00Z",
"sig": "hex",
"price": {
"asset": "USDC",
"amount": "1000",
"network": "eip155:84532"
},
"log_seq": 1,
"tx_hash": "0x..",
"endpoint_id": "business-days-v1",
"request_hash": "hex",
"response_hash": "hex"
}
}
}Tags
x402
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