Yes. ChatGPT's code tool can write an .xlsx in its sandbox. A Spreadsheet server does it as a repeatable tool call and can query the file afterwards.
ChatGPT can create an .xlsx with its code tool. The Spreadsheet server writes .xlsx and .csv files as tool calls, adds columns and converts formats. It runs hosted or locally in Claude and Cursor.
What you get
orders_q3.xlsx, net sales by region
Computed from all 3,412 rows, largest first
| Region | PLN |
|---|---|
| Mazowieckie | 1,284,300 |
| 3 more regions | ... |
| Opolskie | 96,420 |
| Rows read | 3,412 |
Free to start. Spreadsheet Pro is $19 once. Free vs Pro
With its code tool, ChatGPT can build an .xlsx and give you a download link. Without it you get a table or CSV text to paste, and pasted tables often land in one column.
The Spreadsheet server writes rows to .xlsx, .csv, .tsv or .json, adds computed columns to a new file, converts formats and summarizes a column. On the hosted endpoint each file comes back as a download and stays available by name for the next call. To try it in ChatGPT on the web, where your plan or workspace allows custom MCP servers, get a free token at mcp.zovo.one/mcp/connect and add mcp.zovo.one/mcp/spreadsheet/t/<token> as a server with No authentication. We haven't tested this in ChatGPT yet.
Example scenarios built on the real tools of Spreadsheet. Names and amounts are invented.
Make members-2026.xlsx with columns name, membership type, paid date and amount, from the list I paste below.
A real .xlsx file with the member list, and a count and total of what has been paid.
Here is orders_q3.xlsx (uploaded). Give me total net sales in PLN by region, largest first.
A 5-row table: Mazowieckie 1,284,300 PLN first, Opolskie 96,420 PLN last, computed from all 3,412 rows.
About 15 min saved (estimate)
Search ledger_2026.csv for INV-1187 and show me that row.
The row with the 1,560.00 GBP amount and its posting date, without opening Excel.
About 5 min saved (estimate)
Every example here works on the free tier. One $39 key removes the limits on all of them. Pricing
Paste one URL into Claude.ai, Claude Desktop, Cursor or VS Code. No install, no account.
1. Get a free token (30 days, 600 calls an hour)
curl -s -X POST https://mcp.zovo.one/mcp/token
2. Paste this URL as a custom connector
https://mcp.zovo.one/mcp/spreadsheet/t/<token>
Or run it locally (Node.js 18+)
npx -y @theluckystrike/mcp-spreadsheet
| Free ($0, no key) | Pro ($19 once) |
|---|---|
| Read files up to 5 MB and 5,000 rows (larger files return the first 5,000 rows with a note) | No read limit up to the 50 MB file ceiling |
| Write up to 500 rows per file | No write row limit |
| All sheets, formats and expressions | |
| Hosted, up to 2 MB of loaded sheets per token |
servers/spreadsheet/src/sheet.ts:14-16 (FREE_MAX_ROWS=5000, FREE_MAX_BYTES=5 MB, FREE_WRITE_ROWS=500); servers/spreadsheet/src/index.ts:102,122; https://mcp.zovo.one/s/spreadsheet
Yes. Claude edits uploaded .xlsx and CSV files with code execution, on by default on Free, Pro and Max. When the Spreadsheet server still helps.
You get: Table from your file PDFYes. Claude merges and splits PDFs you upload, with code execution on by default for Free, Pro and Max. The PDF server covers files on disk and Cursor.
You get: Stamped PDF QuotesLine items with VAT, a validity date and a PDF, made from one prompt. Turn the accepted quote into an invoice. Uses the Quotes server. Free tier, Pro $19 once.
You get: QuoteSpreadsheet Pro, $19 once
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