Does your marketing stack compound, or just produce?

Stack Score is a free self-assessment across the seven disciplines of Growth Engineering: Growth (the number your marketing answers to), Direction (how AI output gets accepted), Distinctiveness (whether the work is tell-apart-able), Memory (what happens to what worked), Experiments (how activities get kept or killed), Production (how work moves from brief to published), and Eval (how you find out work is wrong). Each discipline is a four-rung ladder, from not-there to wired-in. Your grade is your weakest discipline, not your average, because a stack fails at its weakest link. The same scoring philosophy as the Agentic Compounding Index, pointed at your own stack instead of a vendor's platform. The result names your weakest discipline and where to start fixing it. Instant, and nothing you choose leaves the page.