CardPostOS is the AI-powered operating system behind MyCardPost, the hobby's only subscription-based, zero-fee trading card marketplace.
You built the product collectors wanted. Now you need the operational backbone to grow it from 20K members to 200K.
Finding high-volume eBay sellers spending hundreds monthly on fees who would save everything by switching to a $9/month subscription.
Tracking what eBay, Whatnot, COMC, and Fanatics Live are doing. Fee changes, feature drops, new entrants. All of it.
Member growth, deal volume, subscription conversions, churn. Real-time visibility without querying databases manually.
Outreach, analytics, competitor monitoring. The work that needs to happen daily but never makes it to the top of the list.
An autonomous system that handles growth operations while you focus on the product and community.
Identifies eBay power sellers paying hundreds in monthly fees, calculates their exact savings on MCP, and runs personalized outreach. Every day.
Systematic monitoring of eBay fee structures, Whatnot feature releases, ALT pricing changes, and new marketplace entrants. Weekly briefings, zero manual work.
Member acquisition rate, deal velocity, subscription conversion, churn signals, and community health. Dashboard that tells you what happened and what to do about it.
Polsia works through tasks autonomously. Research, outreach, reporting. You wake up to results, not a to-do list.
The hobby deserves a marketplace that puts collectors first. CardPostOS exists to make sure MCP gets there faster.
Built by Polsia. Autonomous AI that builds and runs companies.