Excel MCP

Excel MCP: ask Claude or ChatGPT about your Excel files.

Connect Excel to Mammoth, then add Mammoth to Claude or ChatGPT. Ask about sales by region, expenses by category and totals by month in plain words. Mammoth calculates the answer, so the numbers are exact.

Try free How to connect

ExcelYour data
MammothCleans and calculates
Your AI assistantClaude, ChatGPT, VS Code

Your two options

Two ways to connect Excel to your AI assistant

Mammoth answers questions about Excel and your other data. Other Excel MCP servers query Excel directly.

ExcelMammoth

Your assistant

Option 1

Mammoth

Ask about Excel and your other data. Mammoth calculates the answer, so the numbers are exact. Included on every plan.

You ask

“How much did each region sell this quarter?”

Try free How to connect

ExcelYour assistant

Option 2

Other Excel MCP servers

Reads and edits workbook files directly. You install and run it on your own computer.

You ask

“Add a total row to the Sales sheet.”

How those servers are set up

Option 1 · Mammoth

What you can ask about your Excel files

Pick a question to see what your assistant gets back.

Claude

ChatGPT

VS CodeMammoth connected

sales_2026.xlsxTotalled sales by region across the Sales sheetCalculated by Mammoth

Region	Sales ($)
North	1,284,500
South	962,310
East	811,040
West	744,980

Shown on sample data. Your questions run on your own data.

Ask about Excel and your other data together

Connect Excel and any of Mammoth’s 100+ other sources, like QuickBooks, Jira or Salesforce. Join them once in Mammoth, and your assistant can answer questions that cover all of them.

See all 100+ sources

+100 more

Example: Excel with QuickBooks

How does our actual spend in QuickBooks compare with the budget in our Excel file?

Your workbook holds the budget and QuickBooks holds the actual spend. Mammoth matches them on the category and month.

Option 1 · Mammoth

Set up Excel with Mammoth in three steps

Step 1
Connect Excel to Mammoth
Upload your Excel files to Mammoth, or connect the folder they're in, like OneDrive or SharePoint. Then pick the sheets you want.
https://mcp.mammoth.io/mcp
Step 2
Add Mammoth to your assistant
Paste this address into Claude, ChatGPT or VS Code, then sign in with your Mammoth account.
Step 3
Ask your question
Ask in Claude or ChatGPT, in plain words. Mammoth works out the numbers and your assistant replies with the answer.

What Mammoth reads from Excel

You upload Excel files to Mammoth, or connect the folder they're in, like OneDrive or SharePoint. Mammoth reads each sheet as a table, and you pick the sheets you want.

Start free and connect Excel14-day Pro trial · No credit card

Step-by-step setup for each assistant is in our MCP docs.

Option 2 · Other servers

How other Excel MCP servers are set up

The Excel MCP servers people use are community projects. You install them on your own computer, and they read and edit workbook files there.

Step 1
Pick a server
Choose a community Excel MCP server and install it with its command.
Step 2
Point it at your files
Tell it which folder your workbooks are in.
Step 3
Ask your assistant
It reads and edits the files on your computer.

Common questions about Excel MCP

What other Excel MCP servers are there?

The Excel MCP servers people use are community projects. You install them on your own computer, and they read and edit workbook files there.

Do I need Excel installed?

No. Mammoth reads the file itself, so you don't need Excel open or installed to ask about it.

How does my assistant get to my Excel data?

You connect Excel to Mammoth once. Mammoth keeps a copy of the data and updates it on demand or on a schedule. Your assistant asks Mammoth, not Excel.

Are the numbers right?

Yes. Mammoth calculates totals, counts and averages itself and gives your assistant the result. The AI model doesn't add up the rows.

Which AI assistants work with it?

Claude on the web, Claude Desktop and Claude Code, ChatGPT, and VS Code. Cursor can't sign in yet, so use the Mammoth CLI there.

What does it cost?

The MCP server is on every Mammoth plan, including Free. The Free plan reads Excel, so you can do all of this without paying.

Do I paste a password or API key into the chat?

No. You connect Excel inside Mammoth and sign in to Mammoth from your assistant. No password passes through the model.

Can my assistant change things by mistake?

Every tool is labelled as read-only, a change you can undo, or one that deletes or sends data out. You can set your assistant to ask you before it uses anything that isn't read-only.