Total and compare Excel spreadsheets with ChatGPT

1. Create a free account and install BCD on your Mac by pasting one command into Terminal.

2. Click Approve in your browser to connect that Mac to your account.

3. Add BCD to ChatGPT or Claude as a connector, then ask in plain words.

Finds the files
Searches your folders by name, so “the budget file in Documents” is enough.

Reads the sheets
Reads the cells of Excel workbooks and CSV files on the Mac, sheet by sheet, and the AI does the math from those values.

Saves results as new files
Edits to a workbook go into a new file and the original is kept. It can also write a summary as a Word document or PDF.

New computers start read-only: the AI can look but can’t change anything. Writing files and running commands only work after you turn them on for that Mac in your dashboard. There are no open ports: the Mac connects out to BCD.

Reading and totaling works read-only. Saving a cleaned copy or a report needs write permission on that Mac.

Security ›

Does it change my original spreadsheet?
No. Reading doesn’t change the file, and when it edits a workbook it writes a new file next to it, keeping the original.

Do my files get uploaded?
BCD doesn’t copy your folders anywhere. When the AI reads a file, that content passes through BCD’s relay in memory to reach your AI app, and BCD doesn’t store it. Your AI app handles it under its own policy.

Do I need a paid plan?
No. One Mac is free. New accounts can also try Personal, for up to 3 Macs, free for a month, with no card needed.