To let your AI create and edit Excel, Word or PowerPoint files on Windows, install LMCP — a free local MCP server that reads and writes Office file formats directly, without going through Microsoft 365, the Graph API, or even needing Microsoft Office installed on your PC. If your typical Windows machine already has Office installed, that is worth saying explicitly: LMCP does not need it — it works with the file formats themselves.

What You Can Do

Through LMCP, your AI assistant can work with all the main Office formats:

Excel — create a new .xlsx, read data from any sheet, and write specific cells
Word — create a new .docx, read its text, and append content to an existing document
PowerPoint — generate a .pptx deck from structured content and read slides back
PDF — extract text from any PDF for summarizing, searching, or converting

Everything happens locally. The files never leave your PC, and Office itself never opens — LMCP writes the file formats directly.

How to Install

Download LMCP for Windows and install it:

Run the downloaded LMCP-Setup.exe from your Downloads folder
Follow the installer — no admin rights needed, it installs to your user folder
LMCP starts automatically and appears in your system tray

Takes about 30 seconds. Your AI clients are configured automatically.

Then restart your AI client:

Claude Desktop — quit completely and reopen
Cursor — restart the editor
VS Code — reload the window (Ctrl+Shift+P → “Reload Window”)

No Microsoft account, no Office license, no API key. LMCP works with Office files out of the box.

Example Prompts

“Create an Excel file with my Q3 expenses: rent 2000, salaries 12000, software 800” — builds a real .xlsx
“Read budget.xlsx and tell me which months went over plan” — reads and analyzes a spreadsheet
“Update cell B5 in forecast.xlsx to 15000” — writes a specific cell
“Turn these meeting notes into a Word document and save it to my Desktop” — creates a .docx
“Make a 5-slide PowerPoint summarizing this project” — generates a .pptx deck
“Can Claude create an Excel spreadsheet for me without Office installed?” — yes, that is exactly how this works

Real-World Workflows

From data to spreadsheet in one step

Prompt — paste into your AI

Read my last three months of invoices, total them by client, and create an Excel summary with one row per client.

Report straight into OneDrive

Prompt — paste into your AI

Pull this month's numbers, build an Excel report, and save it into my OneDrive “Reports” folder.

With LMCP's OneDrive tools, the finished file syncs to all your devices automatically.

LMCP also connects your AI assistant to Outlook, OneDrive and Microsoft Teams on Windows. See the full list of guides or learn more at local-mcp.com.

Limitations

Content, not pixel-perfect styling — LMCP writes data, text, and structure; complex formatting (charts, conditional formatting, macros) is best added in Excel itself afterward.
Formulas vs. values — cell writes store values; if you need live formulas, ask for them explicitly or finish in Excel.
Local files — the file lives on your PC; combine with LMCP's OneDrive tools to read from or save into your synced OneDrive folder.

Frequently Asked Questions

Can Claude create an Excel spreadsheet on Windows without Office installed?

Yes. LMCP works with the .xlsx file format directly — Microsoft Excel does not need to be installed.

Can Claude write to a Word document on my PC?

Yes — create a new document or append to an existing one, all locally.

Do I need a Microsoft 365 subscription?

No. LMCP reads and writes Office file formats directly — no subscription, no Graph API, no cloud upload.

Create & Edit Excel, Word and PowerPoint with AI on Windows — No Microsoft 365 Needed