Google Ads scripts
Each one states what it reads, what it writes, and what to change before you run it. Paste into Tools → Bulk actions → Scripts, authorise, preview, then schedule.
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Final URL health check
Requests every final URL on enabled ads and keywords and reports the ones that do not return 200 or that redirect to another host.
read-onlyDaily
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Spend anomaly alert
Emails you when a campaign spent far more or far less yesterday than it normally does on that weekday, using the same weekday from the previous four weeks as the baseline.
read-onlyDaily, early morning
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N-gram waste report
Finds the words and word pairs your search terms have in common that spend money and never convert, so you negate a pattern instead of one term at a time.
read-onlyWeekly