Holiday Calendar

{
  "mcpServers": {
    "com.modernmustardseed/holiday-calendar": {
      "url": "https://starter.modernmustardseed.com/holidays"
    }
  }
}

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

5 shown · authentication unknown

• Add business days

  add_business_days

  Move a number of U.S. business days forward or backward from a date, skipping weekends and observed federal holidays, for due dates, delivery windows and notice periods. The start date is not counted: 1 business day after a Friday is the next Monday, or Tuesday when that Monday is a holiday. Returns the resulting date and every holiday it skipped. Up to 1,000 business days either way.

  Schema valid · SHA-256 294cd2b15143…

  View input schema

  {
    "type": "object",
    "properties": {
      "start_date": {
        "type": "string",
        "maxLength": 40,
        "description": "The date to count from. It is not counted itself, written YYYY-MM-DD (for example 2026-11-26). Covers 2021 through 2100."
      },
      "business_days": {
        "type": "integer",
        "minimum": -9007199254740991,
        "maximum": 9007199254740991,
        "description": "Business days to move, -1000 to 1000. Negative counts backward. 0 returns the start date if it is a business day, otherwise the next one."
      }
    },
    "required": [
      "start_date",
      "business_days"
    ],
    "$schema": "https://json-schema.org/draft/2020-12/schema"
  }

• Check a business day

  check_business_day

  Check whether a date is a U.S. business day (a weekday that is not an observed federal holiday). Returns the weekday, the holiday observed that day if any, and the business days just before and just after it.

  Schema valid · SHA-256 cbcaffadf260…

  View input schema

  {
    "type": "object",
    "properties": {
      "date": {
        "type": "string",
        "maxLength": 40,
        "description": "The date to check, written YYYY-MM-DD (for example 2026-11-26). Covers 2021 through 2100."
      }
    },
    "required": [
      "date"
    ],
    "$schema": "https://json-schema.org/draft/2020-12/schema"
  }