Research profitable products to sell on eBay. Analyze completed listings, sell-through rates, average selling prices, competition density, and seasonal demand patterns.
NewMaintained
Automatic
◆Research pack
Last verified 8/19/2026
What it changes
Passed 14 of 22 test cases with the skill, and 14 of 22 without it.
Without skill64%
With skill64%
Checks it passed that the model alone missed
Recommends creating listings and activating Promoted Listings 30 to 45 days prior to that volume inflection point
1 fixed13 passed either way7 still failing1 broke
Pass-rate lift
0 pp
Tokens
+11%
Agent turns
0%
Response time
-6%
Model gemini-3.6-flashMeasured 8/19/2026v114 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
A test case the skill fixed. Same model, same prompt, with and without the skill.
Prompt
How can an eBay seller use Terapeak 1-year historical sales volume data to establish the exact lead-time month for initiating ad campaign velocity prior to peak seasonal buyer searches?
What was checked, without and with the skill
Checked
Without skill
With skill
Specifies locating the inflection month where historical monthly sold volume first begins its upward slope on the 1-year Terapeak trend line
Passed
Passed
Recommends creating listings and activating Promoted Listings 30 to 45 days prior to that volume inflection point
Missed
Passed
case-12 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md35 linessingle file
eBay Product Research
Research profitable products to sell on eBay. Analyze completed listings, sell-through rates, average selling prices, competition density, and seasonal demand patterns.
Capabilities
Completed listings analysis for real selling prices