Smart List AI
Helping sellers create higher-quality listings faster with AI-assisted workflows
Role
Sr. Product Designer
Platform
iOS, Android, Web
Scope
4-5 Months
Context
Creating listings on Poshmark requires significant manual effort:
taking photos
writing titles/descriptions
pricing
categorization
New and casual sellers often drop off before publishing a listing.
At the same time, low-quality listings reduce buyer trust and marketplace liquidity.
The Problem
Initial business goal - Increase listing creation and Click-to-Publish rate.
However, early experiments revealed a deeper issue:
while AI-assisted flows increased publishing speed, low-quality listings struggled to convert into actual sales.
This shifted the challenge from:
“How do we help users publish faster?”
to:
“How do we help users create listings that actually sell?”
THIS is the senior-level framing.
Opportunity
+11.5% - Listings Published & Available
<4 photos - Correlated with lower sell-through rate
1-photo experiment - reduced friction but decreased listing quality
AI-assisted flows - improved seller efficiency but required stronger trust signals
Thesis
AI should not only accelerate listing creation — it should guide sellers toward creating higher-quality listings that are more likely to convert.
Smart List AI was designed as an AI-assisted listing experience that balances:
speed
quality
seller confidence
marketplace health
Key Challenges
Designing trustworthy AI interactions
Users feared AI would overwrite or erase their edits.
Balancing speed vs listing quality
Reducing friction increased publishing but harmed downstream sell-through.
Encouraging better seller behavior
Users often didn’t understand why adding more photos mattered.
Making AI actions understandable
Users struggled to discover and interpret AI-powered actions like regeneration.
Research Insights
Users did not notice “Regenerate”:
Many participants overlooked the CTA or feared it would erase their content.
Sellers lacked trust in AI-generated pricing
Users often researched pricing manually before publishing.
Photo quantity strongly impacted quality
Listings with fewer than 4 photos performed worse in sell-through rate
Users needed motivation, not just instructions
Educational prompts performed better than passive UI indicators.
Design Solutions
AI-Assisted Listing Generation
Generate titles/descriptions automatically from uploaded photos.
Pricing Confidence
similar sold listings
pricing explainers
transparency into AI suggestions
Key Design Decisions
We optimized for downstream marketplace quality — not just funnel completion.
We treated AI as collaborative, not autonomous.
We used education and guidance instead of hard enforcement initially.
We shifted from “speed-only” metrics toward long-term seller success metrics.
Results
+11.5%
Listings Published & Available
Improved Click-to-Publish
through AI-assisted listing creation
Better seller understanding
of photo quality and pricing expectations
Reflection
Smart List AI taught me that designing AI products is not just about reducing effort — it’s about helping users make better decisions with confidence.
Copyright 2026 by Kathrine Huang