CellRune

CellRune lets an assistant read, calculate, edit and save XLSX workbooks locally through a headless stdio MCP server.

What you can do

• Read XLSX workbook contents, including sheets and cell values.
• Calculate formulas or values within a workbook.
• Edit cells and workbook content.
• Save changes back to XLSX files on the local machine.

When to use it

Useful when you want an assistant to inspect or modify spreadsheet files on your own computer without opening Excel, for example to review data, apply edits, or recalculate and save a workbook.

Requirements

Runs as a local process on the user's machine over stdio, installed from the provided MCP bundle package. Desktop only; no web execution. No authentication, environment variables or headers are declared.