Business-Day Oracle

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "business-day-oracle": {
      "type": "http",
      "url": "https://bizday.noahsarch.tech/mcp"
    }
  }
}

8 tools

• is_working_day

  Say whether a date is a working day in a country/subdivision or market, and why not (weekend, holiday name, holiday observed, projected lunar holiday). Example: date '2027-03-10', country 'SA'. Calendar selection: country (ISO 3166-1 alpha-2, e.g. 'SA', 'DE', 'US') or market…

• add_working_days

  Move N working days from a date, skipping weekends and holidays; returns the end date and every skipped day with its reason. Delivery promises, SLA clocks, payment terms in business days. Example: start_date '2026-12-23', days 5, country 'DE', subdivision 'BY'. Calendar…

• working_days_between

  Count working days between two dates with endpoint control; lists the non-working days. Leave cost, lateness, elapsed business days. Example: '2026-05-18' → '2026-06-05', country 'AE', inclusive 'both'. Calendar selection: country (ISO 3166-1 alpha-2, e.g. 'SA', 'DE', 'US') or…

• roll_date

  Apply a business-day convention (following, modified following, preceding, modified preceding) to a date on a country or market calendar — payment dates, coupon dates, settlement, SLA due dates. Example: date '2026-05-31', convention 'modified_following', market 'XLON'. Calendar…

• compute_deadline

  Compute the end of a period ('within 30 calendar days', '10 working days', '3 months') from a start date under explicit counting rules, roll it by the chosen convention when it lands on a non-working day, and return raw vs final deadline, skipped days and a step-by-step…

• list_holidays

  All holidays of a year for a country/subdivision/categories or a market, each with local and English names, whether it is observed/shifted, projected (lunar), on a weekend, and whether it counts as non-working. Example: year 2027, country 'IN', subdivision 'KA'. Calendar…

• next_holiday

  The next N holidays on or after a date with days_until and projection flags. Example: from_date '2026-11-01', country 'JP', count 3. Calendar selection: country (ISO 3166-1 alpha-2, e.g. 'SA', 'DE', 'US') or market (MIC, e.g. 'XNYS', 'XLON'); optional subdivision…

• list_calendars

  Discover calendars: without arguments, all 250 countries and 30 markets; with a country code, its legal weekend, subdivision codes, holiday categories, languages, year range and public sources. Free. Example: country 'US'. Response: result plus data_confidence (high = fixed-date…

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