Coming soon from Mint Condition™

The Partner Grade APIfor card platforms

Plug Mint Condition™ grading into your marketplace, POS, or inventory stack. Send a SKU plus front and back images. Get grades, overlays, and scores back in one response.

Request Information
api.mintconditiongrading.com
POST/v1/grade
{
  "sku": "MC-INV-10482",
  "images": {
    "front": "https://cdn.mcgrade.com/in/10482-f.jpg",
    "back": "https://cdn.mcgrade.com/in/10482-b.jpg"
  },
  "card": {
    "player": "Jackie Robinson",
    "year": 1948,
    "set": "Leaf",
    "number": "79",
    "category": "Baseball"
  }
}

How it works

Same request format for every card you submit.

  1. 1

    Authenticate

    Send requests with a partner key. We issue keys after reviewing your Request Information form.

  2. 2

    Submit a card

    POST the SKU, front and back image URLs, and any card details you already have.

  3. 3

    Get results

    We return the overall grade, subgrades, and overlay image URLs in one response.

What you get back

Grades, overlays, and a report link in one response.

  • Grades & subgrades

    Overall grade plus centering, corners, edges, and surface. Same breakdown dealers see in Vault.

  • Overlay images

    Image overlays you can show in your own UI so customers can see what drove the grade.

  • Report link

    A shareable report URL for each graded card, ready to open from your product.

These are estimates, not official PSA, BGS, or SGC grades.

Partner API

Request Information

Tell us a bit about your product. We will follow up when sandbox access is ready.

Frequently asked questions

Who is the Partner API for?
Marketplaces, POS systems, inventory tools, and other B2B products that want to grade cards through an API. It is not a stand-in for consumer credit packs on the website or iOS app.
How do images work?
You send front and back image URLs (or another upload flow we agree on). We return grade results and overlay image URLs you can show in your product.
Are these official PSA, BGS, or SGC grades?
No. Mint Condition returns AI pre-grade estimates to help with triage and listing decisions. Only the grading companies issue official slab grades.
When will sandbox access open?
Soon. Send a Request Information form and we will follow up when a sandbox is ready.