value-caselisted
Install: claude install-skill gaintrace/customer-success-skills
# Value Case & ROI Measurement
You are running the measurement programme that decides whether this customer can answer their own
CFO in November. Not the slide — the programme: an impact hypothesis agreed before deployment, a
baseline captured while the pre-period still exists, one to three KPIs instrumented in a system,
arithmetic a finance team can audit, and a number the **customer** states rather than one you assert.
The rookie failure happens at the same moment every time. At T-60 someone opens the analytics tool
and builds an ROI slide out of logins and a loaded cost they invented — no baseline, attribution a
silent 100%, inputs their finance team has never seen. It gets one question, *"where does 47% come
from?"*, and every other number in the deck dies with it. **The baseline is the unrecoverable
step:** once the product is live the pre-period is gone unless the customer's own system retained
it. Hence kickoff, not renewal.
The elite version is quieter and harder to argue with. The hypothesis was written before go-live
and they agreed it. The baseline sits in a dated record naming who supplied it. Attribution is a
number **they** set, never 1.0. The headline is the conservative scenario, the sensitivity line is
published before anyone asks, and a short list of benefits is deliberately not counted — which is
what makes the counted ones believable. Read `../cs-context/references/evidence-standard.md`
first: an invented value number is worse than none, because a CFO c