Privacy and data security

What we collect, where prices come from, and how long we keep your data.

1min readUpdated May 20, 2026

Mintlytics holds your collection data and account preferences. Here's the full picture.

What we collect

  • Account: email, display name, plan tier (via Clerk auth)
  • Collection items: cards you've added, grade, purchase price, purchase date
  • Sales: cards you've sold, sale price, fees (P&L tracker)
  • Watchlists / alerts: cards you're watching, alert thresholds
  • AI usage counters (Elite plan): query count + reset period

What we don't collect

  • Payment details — Stripe holds those, never us
  • Photos you upload to the AI Grading Assistant beyond the request lifecycle (deleted after 30 days)
  • Browsing behaviour outside the app

Where price data comes from

All third-party, all read-only:

  • TCGplayer — raw card market prices (USD)
  • Cardmarket — EU market prices (EUR), via TCGGOPRO
  • eBay Sold Listings — graded medians + individual sales
  • TCGGOPRO — aggregated eBay graded medians
  • PokéWallet — additional vintage card prices

We never resell your collection data. We do not run ads.

Data retention

  • Active accounts: all data retained
  • Deleted accounts: account row deleted, collection data anonymised within 30 days
  • AI grading photos: 30 days from upload, then permanently deleted

Your rights

Email adamstruch@gmail.com for: data export (full JSON dump), data deletion (full removal), or to opt out of any specific data use.

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