# Budget Scenario Planner

Models what happens to your CPA, ROAS, conversion volume, and impression share when you...

- Repository: https://github.com/irinabuht12-oss/marketing-skills (6579 stars)
- Category: Engineering
- License: see repository
- Last updated: 2026-10-27
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add irinabuht12-oss/marketing-skills --skill budget-scenario-planner -g -a claude-code -y`
Codex: `npx skills add irinabuht12-oss/marketing-skills --skill budget-scenario-planner -g -a codex -y`
Cursor: `npx skills add irinabuht12-oss/marketing-skills --skill budget-scenario-planner -g -a cursor -y`
Gemini CLI: `npx skills add irinabuht12-oss/marketing-skills --skill budget-scenario-planner -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add irinabuht12-oss/marketing-skills`

## Description

Models what happens to your CPA, ROAS, conversion volume, and impression share when you increase or decrease budget by any amount. Uses your actual account data and historical diminishing returns patterns, not generic industry assumptions. Platform: Google and Meta.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# 3/ Budget Scenario Planner, Google + Meta

## What it does
Models what happens to your CPA, ROAS, conversion volume, and impression share when you increase or decrease budget by any amount. Uses your actual account data and historical diminishing returns patterns, not generic industry assumptions.

## How it works
Claude looks at your historical spend-to-conversion relationship at different budget levels, maps the efficiency curve, and projects where you'll land at a new spend level. It accounts for auction dynamics, meaning that scaling 50% doesn't mean 50% more conversions, it models the real falloff.

## Practical example
Client wants to go from $30K/month to $50K/month on Meta. Claude analyzes the last 90 days and shows that the first $10K increase will bring CPA from $38 to $43 (still within target), but the last $10K pushes CPA to $58 because you'll exhaust the high-intent audience and start hitting colder segments. Recommendation: scale to $40K first, test new audiences, then push to $50K.

## What you get back
- Projected CPA, ROAS, and conversion volume at each budget level
- The efficiency curve showing where diminishing returns kick in
- Break-even points where scaling stops making financial sense
- Recommended budget level with reasoning
- Comparison across campaigns showing which ones have the most room to scale

## When to use it
- Client or leadership asks to increase or cut budget
- Quarterly planning when setting budget allocations
- When deciding which campaigns deserve more budget
- Before pitching a budget increase to show the projected return

## Data access (Ryze MCP)

This skill works best with live account data. Connect the free Ryze MCP once and Claude reads your Google Ads, Meta Ads, GA4 and Search Console directly:

The rest: https://github.com/irinabuht12-oss/marketing-skills/blob/HEAD/skills/budget-scenario-planner/SKILL.md