Python MCP All-in-One

Python MCP All-in-One

A learning MCP server providing tools for OS info, file operations, weather, SQLite queries and resources for documentation and user profiles.

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README

Python MCP All-in-One

FastMCP로 만든 학습용 MCP 예제입니다.
Cursor 같은 MCP 클라이언트에서 Tool(실행)과 Resource(읽기 전용 컨텍스트)를 나눠 체험할 수 있습니다.

구분 역할 엔트리포인트
Tools OS 조회, 파일 R/W, 날씨, SQLite src/server.py
Resources 가이드 문서, 유저 프로필 src/server_resources.py

구조

python-mcp-all-in-one/
├── src/
│   ├── server.py              # Tool MCP 서버
│   └── server_resources.py    # Resource MCP 서버
├── docs/
│   └── mcp-guide.md           # Resource로 노출되는 가이드
├── data/
│   └── mcp_sample.db          # SQLite (users 테이블)
├── requirements.txt
└── README.md

사전 요구

  • Python 3.12+
  • Cursor (또는 다른 MCP 클라이언트)

설치

cd python-mcp-all-in-one
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

Cursor MCP 설정

~/.cursor/mcp.json 예시 (경로는 본인 환경에 맞게 수정):

{
  "mcpServers": {
    "python-all-in-one-mcp-v2": {
      "command": "/ABS/PATH/python-mcp-all-in-one/.venv/bin/python",
      "args": [
        "/ABS/PATH/python-mcp-all-in-one/src/server.py"
      ]
    },
    "python-mcp-resources": {
      "command": "/ABS/PATH/python-mcp-all-in-one/.venv/bin/python",
      "args": [
        "/ABS/PATH/python-mcp-all-in-one/src/server_resources.py"
      ]
    }
  }
}

설정 후 Cursor Settings → MCP에서 두 서버가 Connected인지 확인하세요.

코드 수정 후 도구/리소스가 안 바뀌면: MCP Reload만으로는 옛 스냅샷이 남을 수 있습니다.
서버 이름 변경, Cursor 완전 재시작, 또는
rm -rf ~/.cursor/projects/*/mcps 후 재시작을 시도하세요.


1) Tools 서버 (server.py)

서버 표시 이름: Python All-in-One MCP

Tool 설명 예시 인자
get_os_info OS / 아키텍처 정보 (없음)
read_local_file 텍스트 파일 읽기 file_path
write_local_file 텍스트 파일 쓰기 file_path, content
get_current_weather 도시 날씨 (wttr.in) city (seoul, auckland 등)
run_sqlite_query SQLite 쿼리 실행 query

DB 경로: data/mcp_sample.db
users(id, name, role) 테이블이 없으면 자동 생성합니다.

채팅 테스트 예시

  • 내 컴퓨터 OS 정보를 알려줘. (get_os_info 사용)
  • Auckland 날씨가 어때? (get_current_weather)
  • users 테이블에서 name이 jason인 행을 SQL로 조회해줘. (run_sqlite_query)

2) Resources 서버 (server_resources.py)

서버 표시 이름: Python MCP Resources

URI 종류 내용
resource://docs/mcp-guide 정적 docs/mcp-guide.md
resource://users/{user_id} 동적 SQLite users에서 name = user_id JSON

샘플 유저 (DB가 비어 있으면 자동 시드):

user_id role
jason MCP Explorer
admin System Manager

Tool vs Resource

Tool Resource
목적 행동 / 계산 / 부작용 가능 읽기 전용 컨텍스트
SQL 실행, 파일 쓰기, API 호출 문서, 프로필 JSON

채팅 테스트 예시

  • resource://docs/mcp-guide 내용을 읽어줘.
  • resource://users/jason 프로필을 보여줘.
  • python-mcp-resources에서 가이드랑 jason 프로필을 읽어줘.

로컬 스모크 테스트 (선택)

source .venv/bin/activate

# Tools
python -c "
import asyncio
from mcp import ClientSession, StdioServerParameters
from mcp.client.stdio import stdio_client

async def main():
    params = StdioServerParameters(
        command='.venv/bin/python',
        args=['src/server.py'],
    )
    async with stdio_client(params) as (r, w):
        async with ClientSession(r, w) as s:
            await s.initialize()
            tools = await s.list_tools()
            print([t.name for t in tools.tools])

asyncio.run(main())
"

참고

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