Google Drive: reject a signature request
Reject (decline to sign) a Google Docs / Drive eSignature request addressed to the signed-in account. Google then cancels the whole request for every signer. Takes the PDF link from list_signature_requests or the request email. Returns the account that rejected and the request's status afterwards. Refuses when the account is not a signer, has already signed or rejected, or the request is no longer open. When the browser is signed in to several Google accounts, pass the account to act as.
Input
url requiredLink to the PDF sent for signature (https://drive.google.com/file/d/<id>/...) or the bare file id.
account optionalGoogle account to act as when the browser is signed in to several.
Output
fileId requiredrejected requiredrejectedBy requiredurl optionaltitle optionalrequestedBy optionalFAQ
Create a Google Sheets spreadsheet
Create a new Google Spreadsheet in My Drive, optionally with a title. Returns spreadsheetId, url, and firstGid (always 0). The file lands in Drive root (My Drive); moving it elsewhere is a Drive action, not a Sheets one.
Sheets: write cells
Write a 2D block of values into one tab of a Google Spreadsheet, top-left at startCell, like the Sheets API: null leaves a cell as it is, "" clears it, anything else replaces it as if typed (dropdown rules and formatting stay; clearing a dropdown cell removes its dropdown). Returns range, rows, cols, saved once every edit is saved. A value the sheet refuses (data validation, outside the grid) stops the run with the sheet's own message. Values are parsed per the spreadsheet locale ("1.5" in a FR sheet becomes 1 May; prefix ' to force text); leading = enters a formula; needs edit rights.
Sheets: add tab
Add a tab to a Google Spreadsheet, optionally naming it in the same pass. Returns the new tab's gid and final name. Waits for the editor's save before resolving; needs edit rights.
