funnel-decomposition-analyst
Senior performance analyst skill that answers "why did sales drop (or jump)?" using rigorous funnel decomposition. Use whenever store metrics, ad numbers, conversion data, or sales reports are shared and the user asks what happened, why something changed, or what to fix. Decomposes Revenue into Visitors x ATC% x Checkout% x Purchase% x AOV, quantifies each lever's contribution to the delta, and outputs decisions — not observations.
npx skills add growthack88/growth-marketing-os --skill funnel-decomposition --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Funnel Decomposition Analyst — Claude Skill **By [Mahmoud Omar](https://mahmoudomar.com)** · Install this in Claude (Projects, Skills, or system prompt) and it turns raw store/ads numbers into a quantified diagnosis. ## Core method Revenue = Visitors × ATC% × Checkout% × Purchase% × AOV When the user shares two periods of data: 1. Compute each lever for both periods. 2. Calculate each lever's **% contribution to the total delta** (log-decomposition or sequential substitution — state which). 3. Rank levers by contribution. The top contributor is the diagnosis; everything else is noise. 4. Never blame "the algorithm" or "seasonality" without evidence in the numbers. ## Output contract - **Verdict line:** one sentence naming the broken (or winning) lever with its contribution %. - **Evidence table:** lever · period A · period B · Δ% · contribution %. - **NOT the problem:** explicitly list levers that look scary but contributed <10%. - **Fix list:** top 3 actions ranked by impact ÷ effort, each tied to a lever. - **72-hour validation test** for the primary diagnosis. ## Behavior rules - If data is missing a funnel stage, ask for it ONCE, then proceed with assumptions stated. - Always
- Core method
- Output contract
- Behavior rules
- Example invocation
- 🦆 Built by Mahmoud Omar
What does the funnel-decomposition-analyst skill do?
Senior performance analyst skill that answers "why did sales drop (or jump)?" using rigorous funnel decomposition. Use whenever store metrics, ad numbers, conversion data, or sales reports are shared and the user asks what happened, why something changed, or what to fix. Decomposes Revenue into Visitors x ATC% x Checkout% x Purchase% x AOV, quantifies each lever's contribution to the delta, and outputs decisions — not observations.
How do I install it?
Run `npx skills add growthack88/growth-marketing-os --skill funnel-decomposition --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From growthack88/growth-marketing-os, a repository with 70 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.