# SheetSentry > SheetSentry is an automation result checker. It watches the Google Sheet that an automation (n8n, Zapier, Make, or custom scripts) fills, and alerts you when rows are missing, empty, or late. Status: pre-launch, waitlist open. "SheetSentry" is a working name. Website: https://sheetsentry.app/ ## The problem Automations can report "success" for days while writing zero rows (expired token, empty upstream response, renamed column). Heartbeat monitors only prove a job ran; SheetSentry checks what actually landed in the destination sheet. ## How it works 1. Sign in with Google using read-only access. SheetSentry can read the sheets you pick and never changes them. 2. Choose the sheet, the timestamp column, the columns that must be filled, and the deadline. 3. Get alerted if rows are missing, empty, or late. ## Pricing (early pricing, monthly, USD) - Starter: $29/mo for 3 monitored reports - Business: $79/mo for 15 monitored reports - Agency: $199/mo for 50 monitored reports Paid plans are available now via Stripe checkout from https://sheetsentry.app/#pricing (monthly, cancel anytime). The free pilot (up to 3 monitors per email, no account) is also available at https://sheetsentry.app/app ## FAQ - What data can you access? Read-only access to the sheets you pick. Nothing else. - Will you ever edit my sheet? No. SheetSentry never edits, adds, or deletes anything in your sheet. - What about days with no data on purpose? You can mark quiet days (weekends, holidays) as allowed so they don't trigger alerts. - Which tools does it work with? Any tool that writes to Google Sheets: n8n, Zapier, Make, custom scripts.