Find Out Why Your ACOS Went Up.
/troubleshoot-rising-acosACOS is a ratio, so only two things can move it. This skill computes both before it theorises, names the one that actually moved, and drills to the search term behind it.
- Runs in
- Claude Desktop, Claude Code
- Reads
- Data you hand it, nothing to connect
- Returns
- Diagnosis: CVR fell on the hero ASIN's exact campaign
- Download
- troubleshoot-rising-acos.zip · 8 KB
How to run the skill. Three steps, under three minutes.
- Step 01
Upload the skill file once
Download it above, then add it to Claude under Customize, then Skills. It becomes
/troubleshoot-rising-acosin every chat after that.Where it goes- Claude Desktop or web
- Customize › Skills › Add › Upload a skill
- Claude Code
- Unzip into
~/.claude/skills/
- Step 02
Point it at your numbers
Any tool that can compare two periods. Paste the figures, share a report, or let it read live data through the AdLabs MCP if you have it connected.
What to give it- Periods
- two, same length, adjacent
- Metrics
- spend, sales, clicks, orders
- Grain
- campaign level or finer
- Source
- paste, attach, or the MCP
- Two comparable periods of the same length
- Campaign-level figures at minimum
- Any PPC tool; AdLabs MCP optional
- The date the rise started, if you know it
- Step 03
Say this
Give it the symptom and the window. It works the order top to bottom and stops when it hits a cause, not a symptom.
Open the full setup guide (PDF)My ACOS jumped from 38% to 46% this month. What happened?
Claude, using the skillThen, in the same chat- Ruled out attribution lag and event weeks
- Set equal 30-day windows either side
- Sorted campaigns by spend, never by ACOS
- ΔACOS = ΔCPC ÷ ΔRPC: RPC moved, CPC held
- Drilled to the search term behind the CVR drop
Diagnosis: CVR fell on the hero ASIN's exact campaign
- Same question, but only for the Sponsored Products campaigns on the hero ASIN.
- You said CVR fell. Show me the working, and tell me what you ruled out.
What you get back. The Lever to Pull to Lower Your ACOS.
A diagnosis, not a dashboard. The ratio it decomposed, what it ruled out first, the drill trail from campaign to search term, and the actions ranked by the dollars behind them.
- The ratio it decomposed
- What it ruled out first
- The drill trail to the search term
- Actions ranked by spend touched
Synthetic figures. The arithmetic in the sample is real.
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