@appmonster/mcp-public-data

@appmonster/mcp-public-data

MCP server for Korean public data — the lookups every agent working in Korea needs: is this business registration active, when are the holidays, what is the normalized address, what did apartments sell for.

한국 공공데이터 MCP 서버 — 사업자 상태, 공휴일, 도로명주소, 아파트 실거래가.

Keys (free)

Env	Where	Needed by
DATA_GO_KR_KEY	data.go.kr → 활용신청: 국세청 사업자등록정보 진위확인 및 상태조회 · 한국천문연구원 특일 정보 · 국토교통부 아파트 매매 실거래가 상세	kr_check_business, kr_holidays, kr_apt_trades
JUSO_KEY	business.juso.go.kr → 도로명주소 API 신청	kr_search_address

Use the decoded data.go.kr key (the one without %2B/%3D). One key works for all three data.go.kr services once each is approved (usually instant).

Install

{
  "mcpServers": {
    "kr-public": {
      "command": "npx",
      "args": ["-y", "@appmonster/mcp-public-data"],
      "env": { "DATA_GO_KR_KEY": "…", "JUSO_KEY": "…" }
    }
  }
}

Tools (all read-only)

Tool	What it does
kr_check_business	NTS status for up to 100 business numbers: active / suspended / closed, tax type, closure date
kr_holidays	Public + substitute holidays for a year or month (KASI)
kr_search_address	Road/lot address, postal code, building, admin code for a keyword
kr_apt_trades	Apartment sale transactions for a 5-digit district code and YYYYMM, optional name filter

Example prompts

• "이 거래처 사업자번호 123-45-67890 지금도 영업 중이야?"
• "2027년 1월 공휴일 알려줘 — 배송 안내문에 쓸 거야"
• "송도동 효성메트하임 9월 실거래가"

MIT © Appmonster