{
  "mcpServers": {
    "hudy": {
      "url": "https://www.hudy.co.kr/api/mcp",
      "headers": {
        "x-api-key": "YOUR_API_KEY"
      }
    }
  }
}

Available Tools

`get_holidays` (Free)

Query Korean public holidays by year or date range.

"2026년 공휴일 알려줘"
"2026-03-01부터 2026-06-30까지 공휴일 조회해줘"

`count_business_days` (Pro)

Count business days between two dates, excluding weekends and public holidays.

"2026-03-01부터 2026-03-31까지 영업일 며칠이야?"
"이번 달 영업일 수 알려줘"

`add_business_days` (Pro)

Calculate the date N business days after a given date.

"2026-03-01에서 10영업일 후 날짜 알려줘"
"오늘부터 5영업일 뒤는 언제야?"

`subtract_business_days` (Pro)

Calculate the date N business days before a given date.

"2026-03-31에서 5영업일 전 날짜 알려줘"

`check_business_day` (Pro)

Check if a specific date is a business day.

"2026-03-01이 영업일이야?"
"오늘 영업일인지 확인해줘"

Custom Holiday Management (Pro)

Manage user-defined holidays that are included in all business day calculations.

Tool	Description
`list_custom_holidays`	List all custom holidays
`create_custom_holiday`	Register a new custom holiday
`update_custom_holiday`	Update an existing custom holiday
`delete_custom_holiday`	Delete a custom holiday

"회사 창립기념일 2026-05-15로 등록해줘"
"커스텀 공휴일 목록 보여줘"

Plans

Feature	Free	Pro ($3/mo)
Public holiday lookup	✅	✅
Monthly API calls	100	5,000
Business day APIs	❌	✅
Custom holidays	❌	✅
Calendar sync (iCal)	❌	✅

Notes

All dates use YYYY-MM-DD format.
Holiday data is sourced from the Korean government open data portal (data.go.kr).
Custom holidays are per-user and automatically included in business day calculations.
Calendar sync provides an iCal URL for Google Calendar, Apple Calendar, and Outlook.

Available Tools

get_holidays (Free)

count_business_days (Pro)

add_business_days (Pro)

subtract_business_days (Pro)

check_business_day (Pro)

hudy

HuDy - Korean Holiday & Business Day Skill

Setup

1. Get an API Key

2. Connect MCP