QCViz-MCP

QCViz-MCP

An MCP server for quantum chemistry that enables LLMs to perform electronic structure analysis, parse calculation outputs, and generate 3D orbital visualizations. It integrates tools like PySCF, cclib, and py3Dmol to facilitate molecular structure manipulation and bonding analysis through natural language.

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QCViz-MCP

CI License Python 3.10+

A Model Context Protocol (MCP) Server for Quantum Chemistry Visualization and Electronic Structure Analysis.

개요 (Overview)

QCViz-MCP는 LLM 클라이언트(Claude Desktop 둥)가 양자화학 계산, 파일 파싱, 그리고 오비탈 시각화를 자연어로 쉽게 수행할 수 있도록 해주는 MCP 서버입니다.

핵심 기능:

  • 오비탈 분석: PySCF를 활용한 IAO (Intrinsic Atomic Orbitals) 및 IBO (Intrinsic Bond Orbitals) 국소화 계산
  • 결과 파싱: cclib를 통해 ORCA, Gaussian 등 16개 양자화학 프로그램 출력 파싱
  • 3D 시각화: py3Dmol을 이용한 상호작용 가능한 3D 오비탈 등치면 렌더링
  • 구조 조작: ASE를 이용한 분자 구조 변환

빠른 시작 가이드 (Quick Start)

설치 방법 (conda 권장)

# conda 환경 생성 (PySCF는 conda-forge에서 설치 권장)
conda create -n qcviz python=3.11 -y
conda activate qcviz
conda install -c conda-forge pyscf -y

# 나머지 의존성 설치
pip install -e ".[viz,parse,structure]"

Windows 사용자: PySCF는 Linux/macOS만 네이티브 지원합니다. Windows에서는 WSL2를 사용하세요. PySCF 없이도 파싱(cclib), 시각화(py3Dmol), 포맷 변환(ASE) 기능은 동작합니다: pip install -e ".[dev-no-pyscf]"

테스트 및 검증

pytest -v
python examples/01_water_ibo.py  # PySCF 필요
python examples/02_orca_parse_viz.py

아키텍처 다이어그램

QCViz-MCP 서버는 다양한 플러그인 형태의 백엔드와 연결되어 각 도구를 제공합니다.

MCP 클라이언트 (Claude Desktop)
       │
       ▼
[QCViz-MCP 서버 / Tools] ─┬─ compute_ibo
                          ├─ visualize_orbital
                          ├─ parse_output
                          ├─ compute_partial_charges
                          ├─ convert_format
                          └─ analyze_bonding
       │
       ▼
[백엔드 엔진] ─────────────┬─ PySCFBackend (계산, 분석)
                          ├─ CclibBackend (파싱)
                          ├─ Py3DmolBackend (시각화)
                          └─ ASEBackend (구조 조작)

라이선스

QCViz-MCP는 BSD-3-Clause 라이선스로 제공됩니다. 의존성 중 ASE는 LGPL 라이선스로 포함되어 있으나, QCViz-MCP는 이를 포함(distribute)하지 않고 참조(import)로만 사용합니다.

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