The easiest way for an agency to look good is to pick a KPI that can’t be audited.

That’s the whole game.

You ask for growth.
They pick the metric that moves fastest and connects to cash slowest.

Suddenly the weekly update is a victory lap because CTR is up.
Or CPM is down.
Or “engagement” is strong.
Or leads are “cheaper”.

None of which tells you whether the business is making more money.

This is KPI laundering.

They take your actual goal, revenue and margin, and run it through enough layers of marketing maths that it comes out clean on the other side as a number nobody can argue with.

CPL is the classic.
You can always lower CPL.
You just broaden targeting, relax qualification, push a softer offer, buy a different mix, open the floodgates.

Congrats, you’ve now bought cheaper leads that don’t close.
Sales gets angry.
The call centre starts cherry picking.
Your close rate drops.
CAC quietly goes up.
The agency posts a chart showing “efficiency gains”.

Operators know this pattern because we’ve all lived it.

If you want to know whether your agency is serious, ask for the metrics they hate:

Close rate by lead source.
Revenue per lead.
CAC by channel.
Payback period.
Contribution margin after marketing.

If they can’t produce those without a two week “data project”, you’re not measuring marketing.
You’re measuring activity.

And activity is the most expensive hobby a PE backed business can have.