Comparison

mcp-server-xlwings vs File-Based Libraries

Feature	mcp-server-xlwings	openpyxl	pandas
DRM-protected files	✅	❌	❌
Live Excel session	✅	❌	❌
Run VBA macros	✅	❌	❌
Read current selection	✅	❌	❌
Real-time formula results	✅	❌	❌
Recalculate workbook	✅	❌	❌
Merged cell detection	✅	✅	❌
Cell formatting (read)	✅	✅	❌
Cell formatting (write)	✅	✅	❌
Chart detection	✅	✅	❌
Cross-platform	❌ Windows only	✅	✅
No Excel required	❌	✅	✅
Headless / CI usage	❌	✅	✅

When to Use What

Use mcp-server-xlwings when:

• Files are DRM-protected or encrypted by enterprise security
• You need to interact with a live Excel session
• VBA macros need to be executed
• Real-time formula results are needed
• Users are working in Excel simultaneously
• You need to see the user's current selection

Use openpyxl / pandas when:

• Running on Linux or macOS
• Processing files in batch without Excel
• Server-side processing without GUI
• CI/CD pipelines need to read spreadsheets
• Excel is not installed on the machine

vs Other Excel MCP Servers

Most Excel MCP servers use openpyxl or similar file-based libraries. They read .xlsx files directly from disk, which means they cannot:

• Open DRM-protected or encrypted files
• Interact with the running Excel process
• Execute VBA macros or get live formula results
• Read the user's current selection
• Access files locked by another process

mcp-server-xlwings uses COM automation for full Excel integration — the same technology that powers VBA and Excel add-ins.