US Federal Holidays and Business Days

Connect Remote server

claude mcp add --transport http us-federal-holidays-business-days-mcp https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp

{
  "mcpServers": {
    "us-federal-holidays-business-days-mcp": {
      "url": "https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

{
  "servers": {
    "us-federal-holidays-business-days-mcp": {
      "type": "http",
      "url": "https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://us-federal-holidays-business-days-mcp.lipmichal.workers.dev/mcp

Tools 5 found in our last check

• list_federal_holidays

  Exact U.S. federal holidays for any year 1971-2100 under 5 U.S.C. 6103: legal date, OPM observed date (Saturday -> Friday, Sunday -> Monday, so New Year's Day 2022 is observed Friday 2021-12-31) and the Federal Reserve closure date (Fed Banks stay OPEN the Friday before a Saturd…

• is_business_day

  Says whether a date (1971-2100) is a business day on the U.S. federal (OPM) calendar or the Federal Reserve banking calendar, names the holiday if any, and returns the previous and next business day. The two calendars differ when a holiday falls on Saturday: 2026-07-03 is a fede…

• add_business_days

  Adds (or with a negative number subtracts) N business days to a date, skipping weekends and observed U.S. federal or Federal Reserve holidays exactly. The start date is not counted. With 0, returns the start date if it is a business day, otherwise the next one. Lists every holid…

• count_business_days

  Counts business days between two dates (1971-2100) on the U.S. federal or Federal Reserve calendar, excluding weekends and observed holidays. include_start and include_end default to true, like Excel NETWORKDAYS. If end is before start the count is negative. Lists the weekday ho…

• invoice_due_date

  Computes an invoice due date from an issue date and net terms in calendar days (Net 30 = 30), then optionally rolls a weekend or U.S. holiday due date: following (next business day), preceding, or modified_following (next business day unless it crosses into the next month). Uses…

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