A copy-paste Claude prompt that surfaces every campaign where CPA is materially above target, pulls the keywords driving the waste, and returns a prioritized action list with estimated monthly savings. The average B2B SaaS account recovers $18K per month on the first run.
Across 43 enterprise B2B SaaS Google Ads accounts audited, 36.1% of total spend went to clicks that never had a chance of converting. $11.3M lost, out of $31.2M. Not "could have been optimized better" — clicks that never had a chance.
The pattern repeats in nearly every account. Broad match keywords bleeding into irrelevant searches. Competitor name campaigns routed to the homepage. Mobile spend converting at 1/30th the rate of desktop. English ads running in French-speaking markets. The waste isn't a rounding error. It's a structural failure.
Finding it used to require a senior analyst, 4 hours, and GAQL fluency. This workflow collapses that into a 15-minute Claude conversation. You ask one question. Claude queries Google Ads through the free Growthspree MCP, surfaces the offenders, pulls the search terms driving the spend, and returns a prioritized action list with estimated monthly savings.
The two gold variables — target CPA and time window — are the only things you typically change. Everything else stays as-is.
google_ads via the free Growthspree MCP. If you already have the MCP installed, the audit runs in 60–90 seconds.Sample output from a $45K/month B2B SaaS account. Real structure, illustrative numbers. The action list at the bottom is what you act on.
Auditing the account now.
Found $14,280 in monthly waste across 5 campaigns. Account total spend: $45,100. Waste rate: 31.7%.
Top keywords driving waste (from the Non-Brand Broad Match US campaign):
First run only. Every run after that takes under 2 minutes.
Head to growthspreeofficial.com/mcp. Click install and authorize Google Ads access through the OAuth flow. Read-only permissions only — no changes can be made to your account through this workflow.
Open Claude Desktop. Click the tools icon. You should see growthspree-mcp with google_ads showing green. If it's red, re-run the OAuth flow.
Copy the prompt from section 02. Set the target CPA to whatever your account aims for. Adjust the 30-day window if your account has low conversion volume — try 60 or 90 days for more stable CPA calculations.
Claude returns the waste leaderboard, search terms, and action list in 60–90 seconds. Execute actions 01–03 immediately — they're zero-risk and typically recover 50–60% of the total waste identified. Save actions 04+ for your weekly optimization session.
GrowthSpree publishes two Google Ads audit tools. They're not competing — they solve different problems. Use the one that matches what you're trying to do today.
You run the prompt in your own Claude session, see the live data, and ask follow-up questions until you're satisfied. You control the analysis — tweak the target CPA, drill into a specific campaign, ask "what about display?" mid-conversation.
Connect your account via OAuth. In 90 seconds you get a polished PDF report covering 15+ metrics — Quality Scores, impression share, conversion setup, negative keywords, targeting. Zero interaction required.
Same prompt, different lens. Useful when you want a tighter answer to a specific question.
Broad match is the single biggest source of B2B SaaS waste. Run this variation to get the match-type split for every campaign and surface exactly where broad match is bleeding.
For accounts where mobile and geography are the suspect waste categories. Returns device splits and geo breakdowns with bid adjustment recommendations.
If offline conversion tracking is active, run the audit against closed-won CPA instead of form-fill CPA. Changes the answer dramatically — campaigns that look fine on form fills often look terrible on closed-won.
Install the free Growthspree MCP, paste the prompt, see your waste in under 15 minutes. Or have senior GrowthSpree operators run it weekly as part of your managed spend.