Sheets: add tab
Input
spreadsheetId requiredSpreadsheet id or any full docs.google.com spreadsheet URL
name optionalOptional name for the new tab, up to 100 characters and not already used in this spreadsheet. Omit to keep the default ("Sheet N"/"Feuille N").
Output
gid requiredgid of the new tab (use with sheets_read_tab / sheets_write_cells)
name requiredFinal tab name
Sheets: rename tab
Rename one tab of a Google Spreadsheet by gid. Returns the gid and the name as displayed after the rename. If no tab in the spreadsheet has that gid it stops with a clear error instead of renaming a different tab. Waits for the editor's save before resolving; needs edit rights.
Sheets: list tabs
List the tabs of a Google Spreadsheet. Returns sheets (name, gid) and the spreadsheet title. gid feeds sheets_read_tab / sheets_write_cells / the edit?gid= URL.
Sheets: delete tab
Delete one tab of a Google Spreadsheet by gid. Returns deletedGid and remainingTabs (names left). The sheet's data goes with it (recover via Undo / Drive history); an unknown gid throws rather than risk deleting the wrong sheet; needs edit rights.