Calculate and model paid-media CPA, CPL, CPC, CPM, ROAS, MER, break-even targets, contribution margin, LTV:CAC, impression-share opportunity, budgets, forecasts, and experiment economics.
SkillScore77Maintained
Automatic
◆Marketing & Content pack
Last verified 8/12/2026
What it changes
Passed 17 of 22 test cases with the skill, and 12 of 22 without it.
Without skill55%
With skill77%
Checks it passed that the model alone missed
Maps each input variable explicitly to its source artifact or operator value.
Flags unstated baseline conversion metrics or COGS required to calculate net contribution margin.
Formats output as valid JSON containing explicit input parameters, formulas, and scenario outputs.
and 2 more in the full report
5 fixed12 passed either way5 still failing0 broke
Pass-rate lift
+23 pp
Tokens
+39%
Agent turns
0%
Response time
+28%
Model gemini-3.6-flashMeasured 8/12/2026v117 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 5
Prompt
An e-commerce company plans a $30,000 Google Shopping push. Product price is $100, unit manufacturing cost is $30, expected CPA is $40. Model the campaign in JSON.
What was checked, without and with the skill
Checked
Without skill
With skill
Highlights unstated variables like payment processing fees or fulfillment costs before finalizing net margin.
Missed
Passed
case-19 · gemini-3.6-flash · 8/12/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md15 linessingle file
Paid Media Financial Model
Identify the decision and collect units, currency, period, tax/refund treatment,
margin, attribution basis, and uncertainty.
Show the formula and map every input to an operator value or cited artifact.
Validate denominators, sign, missing values, incompatible windows, and unit
conversions.
Calculate base, downside, and upside cases where uncertainty affects the decision.
Keep platform-attributed revenue, blended business revenue, cash flow, and
contribution margin distinct.
Return machine-readable inputs, formulas, outputs, sensitivities, and decision
implications.
Never fabricate missing financial inputs, hide division-by-zero, or present a point
forecast without its assumptions.