Prospect Card Radar

Affiliate disclosure: Prospect Card Radar is a participant in the eBay Partner Network. We earn from qualifying purchases made through eBay links on this site, at no extra cost to you.

The data behind the site

Every price, chart and list on the site comes from these public JSON endpoints. Use them freely, just credit Prospect Card Radar.

Prospects371Top 400 catalog, rebuilt daily
Endpoints8JSON, no key needed
Top 100 refresh6 hrsEveryone else daily
CostFreeCredit and link back

Endpoints

What’s in it

  • One comparable card. Headline prices are the raw base Bowman Chrome 1st Bowman auto from the player’s first Bowman year. Parallels, numbered cards and plates are left out.
  • Sold first. Sold values come from SportsCardsPro, matched to the exact card and year, and only with 3 or more sales. Asking averages come from live eBay listings with the top and bottom 10% dropped.
  • History has breaks. /api/history lists the dates our method changed. Don’t compare prices across them.
  • Injured list status comes from MLB’s official transactions, not guesses.

Using the data

The endpoints are public and free. If you publish anything built on them, credit Prospect Card Radar with a link back. How every number is made is on the methodology page.