How I Saved an Agency $8,400 in Google Ads Using AI Agent (2025 Case Study)
A real client was spending $12K/month on Google Ads with only 2.1x ROAS. I built a custom AI agent that now runs 24/7 and brought ROAS to 6.8x in 30 days.
A few months ago, a digital agency from Canada contacted me.
Problem:
→ Spending $12,000–$15,000 every month on Google Ads
→ Manual bid adjustments every day
→ ROAS stuck at 2.1x–2.4x
→ Account manager burnout
Solution: I built a fully autonomous AI Agent using:
• LangChain + CrewAI
• Google Ads API
• OpenAI GPT-4o
• Real-time performance monitoring
What the AI Agent does 24/7:
1. Analyzes search terms report every 6 hours
2. Adds negative keywords automatically
3. Pauses low-performing ads
4. Increases bids on converting keywords
5. Creates new responsive search ads using best-performing headlines
Results after 30 days:
→ Monthly spend reduced to $9,200
→ Revenue increased from $28K → $62K
→ ROAS jumped from 2.3x → 6.8x
→ Total savings: $8,400+ in the first month alone
→ Client now pays me monthly retainer now
Want the same for your agency?
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