VisiGrid

VisiGrid is a spreadsheet with a Rust calculation engine that runs the same way on the desktop, in the browser, and on the server. This connector gives Claude access to the spreadsheets in your VisiGrid account.

What it can do:

• Read a range — values, formulas, and formatting
• Write values and formulas
• Format cells — bold, colours, alignment, number formats
• Add and rename tabs
• Create a new spreadsheet
• Import one from a Google Sheets link or an .xlsx file, preserving borders, merges, number formats, frozen panes, and conditional formatting

Formulas the agent writes are computed by the engine before saving, so =SUM(B1:B12) comes back as a number you can read immediately rather than sitting as text until someone opens the file.

Concurrent edits are detected rather than overwritten. Every read carries a revision, and a write against a stale revision is refused instead of silently replacing work someone else did in the meantime.

Nothing is destroyed. No tool deletes a spreadsheet, and renaming a tab refuses when it would break formulas that reference it.

Access is limited to spreadsheets owned by the account that authorises it, and can be revoked at any time by deleting the connector's key in Settings → API keys. A free VisiGrid account is enough to use it.