This gives Claude the full Apps Script playbook: custom menus, triggers (onEdit, time-driven, form submit), dialogs with spinners, email batching, and API calls. The workflow is consistent (paste into Extensions > Apps Script, save, reload the sheet) and it handles the gotchas that break most scripts: private functions with underscores silently fail in dialogs, cell-by-cell reads are 70x slower than bulk getValues(), and you need flush() before returning or changes won't show. Covers both simple and installable triggers, quota limits, and the V8 runtime quirks. Use this when someone wants to automate Sheets workflows, build custom UI, or wire up external services to spreadsheet data.
npx skills add https://github.com/jezweb/claude-skills --skill google-apps-script