Public holidays and business-day math (T+N, counts) for many countries; pay per call via x402
Connect Remote server
claude mcp add --transport http workday-calendar https://workday-calendar.regnotes.workers.dev/mcp
{
"mcpServers": {
"workday-calendar": {
"url": "https://workday-calendar.regnotes.workers.dev/mcp"
}
}
}
{
"servers": {
"workday-calendar": {
"type": "http",
"url": "https://workday-calendar.regnotes.workers.dev/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://workday-calendar.regnotes.workers.dev/mcp
Tools 4 found in our last check
business_dayWhether a date is a business day in a country (holiday/weekend/make-up workday aware), plus the previous and next business day. Price: $0.001 USDC per request (fixed; one paid HTTP GET = one charge; x402 exact on Base or MPP on Tempo; 4xx errors are not charged).
business_days_addDate that is N business days after (or before, if negative) a start date in a country. Typical use: T+2 settlement, SLA and filing deadlines. Price: $0.002 USDC per request (fixed; one paid HTTP GET = one charge; x402 exact on Base or MPP on Tempo; 4xx errors are not charged).
business_days_countNumber of business days in [start, end] inclusive (max 3 years), with the holidays that fell on weekdays. Price: $0.002 USDC per request (fixed; one paid HTTP GET = one charge; x402 exact on Base or MPP on Tempo; 4xx errors are not charged).
holidaysAll national public holidays for a country and year, with weekend definition and official weekend make-up workdays. Price: $0.002 USDC per request (fixed; one paid HTTP GET = one charge; x402 exact on Base or MPP on Tempo; 4xx errors are not charged).
Details
| Endpoint | https://workday-calendar.regnotes.workers.dev/mcp (Streamable HTTP) |
| First published | 25 Oct 2026 |
| Last updated | 25 Oct 2026 |
| Registry name | dev.workers.regnotes.workday-calendar/workday-calendar |
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