Use when planning adoption-to-expansion motions and cross-sell/upsell campaigns.
SkillScore86Maintained
Automatic
◆Customer Success pack
Last verified 8/23/2026
What it changes
Passed 19 of 22 test cases with the skill, and 13 of 22 without it.
Without skill59%
With skill86%
Checks it passed that the model alone missed
Measure average ARR per account and payback period
Document pricing and packaging experiment findings
Share structured learning loops with the product team
and 5 more in the full report
7 fixed12 passed either way2 still failing1 broke
Pass-rate lift
+27 pp
Tokens
+3%
Agent turns
0%
Response time
-2%
Model gemini-3.6-flashMeasured 8/23/2026v119 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 7
Prompt
A CFO asks the customer success team to justify the sales and marketing spend dedicated to expansion campaigns. What metric should be calculated to show how quickly expansion margin recovers acquisition costs?
What was checked, without and with the skill
Checked
Without skill
With skill
Calculate the payback period to measure the recovery time of expansion acquisition costs
Missed
Passed
case-22 · gemini-3.6-flash · 8/23/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md25 linessingle file
Expansion Playbooks Skill
When to Use
Identifying accounts ready for cross-sell or upsell.
Designing lifecycle campaigns that move customers from adoption to value realization and expansion.
Partnering with sales/CS to run QBRs, roadmap reviews, or packaging changes.
Framework
Signal Stack – product usage milestone, success plan completion, idle licenses, executive sponsor engagement.
Play Types – roadmap preview, ROI workshop, packaged add-on offer, multi-product bundle, success story swap.
Offer Crafting – align incentive (discount, pilot, service credits) with customer value narrative.