Geo Fundamentals
wasp-lang/wasp
Generative Engine Optimization for AI search engines (ChatGPT, Claude, Perplexity).
Senior performance analyst skill that answers "why did sales drop (or jump)?" using rigorous funnel decomposition.
Install Funnel Decomposition Analyst
$ npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install growthack88/growth-marketing-os funnel-decomposition-analyst --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/growthack88/growth-marketing-os.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/funnel-decomposition .claude/skills/funnel-decomposition-analyst && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "funnel-decomposition-analyst" agent skill from https://github.com/growthack88/growth-marketing-os/tree/main/skills/funnel-decomposition into .claude/skills/funnel-decomposition-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "funnel-decomposition-analyst", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/growthack88/growth-marketing-os/tree/main/skills/funnel-decompositionType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install growthack88/growth-marketing-os funnel-decomposition-analyst --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/growthack88/growth-marketing-os.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/funnel-decomposition .agents/skills/funnel-decomposition-analyst && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "funnel-decomposition-analyst" agent skill from https://github.com/growthack88/growth-marketing-os/tree/main/skills/funnel-decomposition into .agents/skills/funnel-decomposition-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "funnel-decomposition-analyst", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install growthack88/growth-marketing-os funnel-decomposition-analyst --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/growthack88/growth-marketing-os.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/funnel-decomposition .cursor/skills/funnel-decomposition-analyst && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "funnel-decomposition-analyst" agent skill from https://github.com/growthack88/growth-marketing-os/tree/main/skills/funnel-decomposition into .cursor/skills/funnel-decomposition-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "funnel-decomposition-analyst", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/growthack88/growth-marketing-os.git --path skills/funnel-decomposition--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install growthack88/growth-marketing-os funnel-decomposition-analyst --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/growthack88/growth-marketing-os.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/funnel-decomposition .gemini/skills/funnel-decomposition-analyst && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "funnel-decomposition-analyst" agent skill from https://github.com/growthack88/growth-marketing-os/tree/main/skills/funnel-decomposition into .gemini/skills/funnel-decomposition-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "funnel-decomposition-analyst", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install growthack88/growth-marketing-os funnel-decomposition-analystInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/growthack88/growth-marketing-os.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/funnel-decomposition .github/skills/funnel-decomposition-analyst && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "funnel-decomposition-analyst" agent skill from https://github.com/growthack88/growth-marketing-os/tree/main/skills/funnel-decomposition into .github/skills/funnel-decomposition-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "funnel-decomposition-analyst", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install growthack88/growth-marketing-os funnel-decomposition-analyst --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/growthack88/growth-marketing-os.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/funnel-decomposition .opencode/skills/funnel-decomposition-analyst && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "funnel-decomposition-analyst" agent skill from https://github.com/growthack88/growth-marketing-os/tree/main/skills/funnel-decomposition into .opencode/skills/funnel-decomposition-analyst/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "funnel-decomposition-analyst", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
funnel-decomposition-analyst- GitHub stars
- 116
- Token cost
- ~861 tokens
- SKILL.md length
- 321 words
- Files
- 1
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- MIT
At a glance
Senior performance analyst skill that answers "why did sales drop (or jump)?" using rigorous funnel decomposition.
- Works in 4 steps: Compute each lever for both periods. → Calculate each lever's % contribution to… → Rank levers by contribution. The top… → …
- Conversion data
- SKILL.md covers Core method, Output contract, Behavior rules and Example invocation, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Funnel Decomposition Analyst is an agent skill from growthack88/growth-marketing-os. 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.
Its SKILL.md is about 860 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Marketing & SEO. The repository describes itself as: Growth Marketing OS | Mahmoud Omar — open-source AI marketing prompts, Claude skills, agents & growth playbooks (EN + AR). The licence is MIT.
When your agent uses it
- Conversion data
- Sales reports are shared and the user asks what happened
- Why something changed
Example prompts
- “why did sales drop (or jump)?”
- “/funnel-decomposition-analyst”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Compute each lever for both periods.
- Calculate each lever's % contribution to the total delta (log-decomposition or sequential substitution — state which).
- Rank levers by contribution. The top contributor is the diagnosis; everything else is noise.
- Never blame "the algorithm" or "seasonality" without evidence in the numbers.
What it can do on your machine
Read from SKILL.md and the folder at commit c6b55c7. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
mahmoudomar.combuildinggrowthmachine.comgrowthduckup.comgrowthhackacademy.comstartupkit.produckdoro.comyoutube.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Funnel Decomposition Analyst loads about 861 tokens when it runs. Until then it costs about 116 tokens; SKILL.md has 321 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from growthack88/growth-marketing-os at commit c6b55c7, republished under its MIT licence (© growthack88). 321 words, ~861 tokens.
Download SKILL.mdSave it as
.claude/skills/funnel-decomposition-analyst/SKILL.md (or your agent's skills folder).- name
- funnel-decomposition-analyst
- description
- 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.
- author
- Mahmoud Omar — https://mahmoudomar.com
- license
- MIT
Funnel Decomposition Analyst — Claude Skill
By Mahmoud Omar · 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:
- Compute each lever for both periods.
- Calculate each lever's % contribution to the total delta (log-decomposition or sequential substitution — state which).
- Rank levers by contribution. The top contributor is the diagnosis; everything else is noise.
- 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 compare equal-length periods.
- Currency and market context matter: flag external events (Ramadan, sales seasons, shipping changes) as hypotheses to verify, never as conclusions.
- Tone: direct, numbers-first, zero fluff. Decisions over descriptions.
Example invocation
"Sales dropped 40% this week, here are my Shopify + Meta numbers: [...]"
Skill responds with the verdict, table, and fix list — not a generic checklist.
<!-- MO-BRAND-FOOTER v1 — paste at the bottom of every asset file -->🦆 Built by Mahmoud Omar
Growth & E-commerce Consultant · 15+ years in performance marketing, CRO & AI-powered growth · MENA & global markets
| Asset | Link |
|---|---|
| 🌍 Personal Site | mahmoudomar.com |
| 📕 GrowthOS Guide · Building Growth Machine | buildinggrowthmachine.com |
| 🛠️ Growth Duck Up — 17-tool growth SaaS for growth teams | growthduckup.com |
| 🎓 Growth Hack Academy | growthhackacademy.com |
| 🚀 StartupKit Pro — Startup OS for MENA founders | startupkit.pro |
| 🍅 DuckDoro — calm productivity app | duckdoro.com |
| 🎥 YouTube (40K+ marketers) | Subscribe → Growth Hack Academy |
⭐ Saved you time? Star the repo — it helps more marketers find these assets.
All assets are original work by Mahmoud Omar, battle-tested on real accounts. Free to use with attribution. Not AI-generated filler.
© growthack88, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/funnel-decomposition of growthack88/growth-marketing-os.
Open the folder on GitHubat commit c6b55c7
Compare with similar skills
Funnel Decomposition Analyst next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Funnel Decomposition Analyst this skillgrowthack88/growth-marketing-os | 116 | — | ~861 | Automated safety check: Pass | MIT | |
| Geo Fundamentalswasp-lang/wasp | 19k | 9 repos | ~861 | Automated safety check: Pass | MIT | |
| Ab Testingcoreyhaines31/marketingskills | 54k | 3 repos | ~3.1k | Automated safety check: Pass | MIT | |
| Hreflang and International SEOAgriciDaniel/claude-seo | 19k | 5 repos | ~3.4k | Automated safety check: Pass | MIT | |
| Referralscoreyhaines31/marketingskills | 54k | 2 repos | ~2.6k | Automated safety check: Pass | MIT | |
| SEO GeoReScienceLab/opc-skills | 1.8k | 4 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 |
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Categories
Questions about Funnel Decomposition Analyst
What does Funnel Decomposition Analyst do?
Senior performance analyst skill that answers "why did sales drop (or jump)?" using rigorous funnel decomposition. Funnel Decomposition Analyst is an agent skill from growthack88/growth-marketing-os." using rigorous funnel decomposition.
When should I use Funnel Decomposition Analyst?
Funnel Decomposition Analyst fits situations like: conversion data; sales reports are shared and the user asks what happened; why something changed.
How do I install Funnel Decomposition Analyst in Claude Code?
Run `npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a claude-code`. Or copy the skill folder (skills/funnel-decomposition in growthack88/growth-marketing-os) into .claude/skills/funnel-decomposition-analyst in your project. Claude Code loads it when a task matches its description.
How do I install Funnel Decomposition Analyst in Codex?
Run `npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a codex`. Or copy the skill folder (skills/funnel-decomposition in growthack88/growth-marketing-os) into .agents/skills/funnel-decomposition-analyst in your project. Codex loads it when a task matches its description.
Can I use Funnel Decomposition Analyst in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add growthack88/growth-marketing-os --skill funnel-decomposition-analyst -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/funnel-decomposition-analyst, .gemini/skills/funnel-decomposition-analyst, .github/skills/funnel-decomposition-analyst and .opencode/skills/funnel-decomposition-analyst in your project.
What does Funnel Decomposition Analyst need to run?
SKILL.md names no scripts, command-line tools or credentials: Funnel Decomposition Analyst is instructions for the agent only.
Does Funnel Decomposition Analyst access the network?
SKILL.md names 7 domains. As links in the text: mahmoudomar.com, buildinggrowthmachine.com, growthduckup.com, growthhackacademy.com, startupkit.pro, duckdoro.com and youtube.com. This is read from the text; nothing was executed.
Is Funnel Decomposition Analyst safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Funnel Decomposition Analyst use?
Funnel Decomposition Analyst is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Funnel Decomposition Analyst use?
About 861 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Funnel Decomposition Analyst?
Skills that share tags, products or a category with Funnel Decomposition Analyst: Geo Fundamentals (wasp-lang/wasp, 19k stars), Ab Testing (coreyhaines31/marketingskills, 54k stars), Hreflang and International SEO (AgriciDaniel/claude-seo, 19k stars) and Referrals (coreyhaines31/marketingskills, 54k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Funnel Decomposition Analyst?
growthack88 (a GitHub user) maintains it in growthack88/growth-marketing-os, which has 116 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on October 2, 2026.
Source: growthack88/growth-marketing-os on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.