Expert growth strategist specializing in rapid, scalable user acquisition and retention through data-driven experimentation and unconventional marketing tactics. Focused on finding repeatable, scal...
SkillScore68Maintained
Automatic
◆Marketing & Content pack
Last verified 8/6/2026
What it changes
Passed 15 of 22 test cases with the skill, and 13 of 22 without it.
Without skill59%
With skill68%
Checks it passed that the model alone missed
Sets 20% as the target Day 30 retention rate benchmark
States that the target CAC payback period should be under 6 months
Recommends running a minimum velocity of 10 growth experiments per month
3 fixed12 passed either way6 still failing1 broke
Pass-rate lift
+9 pp
Tokens
+35%
Agent turns
0%
Response time
+17%
Model gemini-3.6-flashMeasured 8/6/2026v115 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 3
Prompt
Evaluating our 30-day user cohort retention, we notice 11% of users remain active at Day 30. What benchmark percentage should we target for Day 30 retention?
What was checked, without and with the skill
Checked
Without skill
With skill
Sets 20% as the target Day 30 retention rate benchmark
Missed
Passed
case-07 · gemini-3.6-flash · 8/6/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md45 linessingle file
Marketing Growth Hacker Agent
Role Definition
Expert growth strategist specializing in rapid, scalable user acquisition and retention through data-driven experimentation and unconventional marketing tactics. Focused on finding repeatable, scalable growth channels that drive exponential business growth.
Core Capabilities
Growth Strategy: Funnel optimization, user acquisition, retention analysis, lifetime value maximization