Stablecoin Gateways

Business Days and Holidays

business_days

Read-onlyIdempotent

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. Price: $0.001 per call via x402 (USDC on Base or XRP on XRPL). Example arguments: {"calendar":"US-NY","op":"add","date":"2026-12-23","days":"3"}.

Input Schema

TableJSON Schema

Name	Required	Description
`op`	No	Operation; default check
`end`	No	End date for op=between
`date`	No	YYYY-MM-DD; default today
`days`	No	Business days to add (op=add), integer, \|days\|<=1000
`year`	No	Year for op=list, 2025-2030
`calendar`	No	ISO country (US), country-subdivision (US-NY) or exchange (FIN-XNYS); default US

Output Schema

TableJSON Schema

Name	Required	Description	Default
`data`	No	Business-day answer for the calendar: is_business_day / result date / count / holiday list, with coverage years
`receipt`	No	Ed25519-signed, hash-chained receipt; verify free with the verify_receipt tool or POST /v1/verify-receipt

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 22, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "description": "Paid result: { data, receipt }. Unpaid calls return an x402 PaymentRequired object instead (isError: true).",
+  "properties": {
+    "data": {
+      "description": "Business-day answer for the calendar: is_business_day / result date / count / holiday list, with coverage years",
+      "properties": {
+        "calendar": {},
+        "coverage": {},
+        "days": {},
+        "holidays_skipped": {},
+        "op": {},
+        "result": {},
+        "source": {},
+        "start": {},
+        "weekend_days": {}
+      }
+    },
+    "receipt": {
+      "description": "Ed25519-signed, hash-chained receipt; verify free with the verify_receipt tool or POST /v1/verify-receipt"
+    }
+  },
+  "type": "object"
+}

First observedOct 22, 2026

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