data-go-mcp-servers: Instructions file for Claude Code

CLAUDE.md

data-go-mcp-servers CLAUDE.md is an instructions file for Claude Code from Koomook/data-go-mcp-servers. It costs 1,926 tokens per session, scanned A, original, Apache-2.0.

Project-specific instructions for building MCP servers that provide Korean public data.go.kr APIs to AI tools. MCP, or Model Context Protocol, is a standard way for an AI application to call external tools and data sources.

In plain words
What is it for?
Use it when developing or extending servers for Korean public datasets such as business registration, financial, procurement, speech, or chemical-safety information.
Why use it?
It gives contributors the project's structure, examples, development setup, and packaging conventions in one place.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is Koomook/data-go-mcp-servers's own configuration. It tells Claude Code how to work on data-go-mcp-servers itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything data-go-mcp-servers configures →

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /Users/username/github/data-go-mcp-servers/.venv/bin/python.

Reuse

Borrowing it

Nothing to install: this file belongs to Koomook/data-go-mcp-servers. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Koomook/data-go-mcp-servers/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/Koomook/data-go-mcp-servers

Made for: Claude Code.

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Per session 1,926 This file is loaded in full into every session.
When invoked 1,926 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01926 $0.01926
Opus 5.5 $0.00770 $0.00770
Sonnet 5.5 $0.00385 $0.00385
Haiku 4.5 $0.00193 $0.00193

Measured 2mo ago against content hash ebbbafd29706, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

data-go-mcp-servers CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 242 lines

How it starts

The opening of the file, as written. The whole thing — 242 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Korea Data.go.kr MCP Servers - Development Guide

이 프로젝트는 한국 공공 데이터 포털(data.go.kr)의 API를 Model Context Protocol (MCP) 서버로 제공합니다.

프로젝트 구조

data-go-mcp-servers/
├── src/                              # MCP 서버들
│   ├── nps-business-enrollment/      # 국민연금공단 사업장 가입 내역
│   ├── nts-business-verification/    # 국세청 사업자등록정보
│   ├── fsc-financial-info/           # 금융감독원 금융회사 정보
│   ├── presidential-speeches/        # 대통령기록관 연설기록
│   ├── pps-narajangteo/              # 조달청 나라장터 정보
│   └── msds-chemical-info/           # 화학물질안전원 MSDS 정보
│       ├── pyproject.toml            # 패키지 설정 (PyPI 배포용)
│       ├── data_go_mcp/
│       │   └── {module_name}/
│       │       ├── server.py         # MCP 서버 구현
│       │       ├── api_client.py     # API 클라이언트
│       │       └── models.py         # 데이터 모델
│       └── tests/                    # 테스트 코드
├── template/                          # Cookiecutter 템플릿
├── scripts/
│   └── deploy_to_pypi.py             # PyPI 배포 자동화 스크립트
├── CONTRIBUTING.md                   # 새 MCP 서버 추가 가이드
├── LICENSE                           # Apache 2.0
└── pyproject.toml                    # UV workspace 설정

개발된 MCP 서버 예시

패키지 구조 예시: nps-business-enrollment

src/nps-business-enrollment/
├── pyproject.toml                    # 패키지 메타데이터 및 의존성
├── data_go_mcp/
│   └── nps_business_enrollment/      # 모듈명은 하이픈(-) 대신 언더스코어(_) 사용
│       ├── __init__.py
│       ├── server.py                 # MCP 서버 엔트리포인트
│       ├── api_client.py             # data.go.kr API 호출 로직
│       └── models.py                 # Pydantic 모델 정의
└── tests/
    ├── __init__.py
    ├── test_api_client.py             # API 클라이언트 단위 테스트
    └── test_models.py                 # 데이터 모델 검증 테스트

중요: 패키지명은 하이픈(-) 사용, 모듈명은 언더스코어(_) 사용

개발 환경 설정

필수 도구

  • Python 3.10+
  • UV (패키지 매니저)

설치

# 의존성 설치
uv sync --dev

# 특정 서버 개발
cd src/nps-business-enrollment
uv sync

새로운 MCP 서버 추가하기

1. Cookiecutter로 템플릿 생성

# 프로젝트 루트에서 실행
uv run cookiecutter template/ -o src/

# 프롬프트 입력 예시:
# api_name: Weather Forecast              # 사람이 읽기 쉬운 이름
# api_slug: weather-forecast              # URL/디렉토리용 (자동 생성됨)
# package_name: data-go-mcp.weather-forecast  # PyPI 패키지명 (자동 생성됨)
# module_name: weather_forecast           # Python 모듈명 (자동 생성됨)

Read the full file on GitHub · 242 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 242 lines · 1,926 tokens per session scan A ebbbafd29706

Subscribe to this mod's changes

data-go-mcp-servers CLAUDE.md is an instructions file published in the GitHub repository Koomook/data-go-mcp-servers (378 stars, last pushed 1y ago), licensed Apache-2.0. It adds 1,926 tokens to every session, about $0.0077 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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