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Track TCG prices, manage your collection, and follow raw-card markets before the grade.

Search Pokémon, One Piece, and Riftbound cards for sold listings, market price, and graded history — then track your collection, browse marketplace listings, and explore Before the Slab practice markets.

Portfolio tracking is live. Marketplace beta is live. Before the Slab practice markets are in preview.

Make a grade readExplore JK Index

Guess the grade before the slab comes back — practice $JKB, no cash value.

Search the index

Enter at least two characters, then press Enter or tap Open card search.

BEFORE THE SLAB

Guess the grade before the slab comes back.

Real card photos. Practice $JKB. Settled by the final grading result. Review the evidence, make a grade read, and see how other collectors price the same card before the result posts.

Practice $JKB is simulated — no cash value, not withdrawable. JK Index is not affiliated with or endorsed by PSA.

Step 1

Pick a card

Real owner photos of a raw card, graded on the record.

Step 2

Make your read

Back a PSA outcome with practice $JKB — simulated, no cash value.

Step 3

The result settles it

The final grading result resolves the event and your read goes on your public track record.

Make a grade readView upcoming events

Every read builds a public track record of grading reads on your collector profile. See Rising Collectors

PSA outcome

PSA 10

YES signal
YESNO

Evidence-first event pages

YES / NO practice markets for PSA outcomes

Public track record of grading reads

Rising Collectors leaderboard

Supported TCGs

3

Pokémon, One Piece, Riftbound

Portfolio

Live

Collection & value tracking

Marketplace

Beta

Supported cards · approved sellers

Before the Slab

Preview

Simulated practice markets · practice $JKB, no cash value

How collectors use JK Index

Research & search

Sold listings, market price, and graded sales history for supported cards.

Open card search →

Track your collection

Portfolio and collection value in your account — live today.

Open portfolio →

Buy & sell

Marketplace beta for supported cards and approved sellers only.

Browse marketplace →

Practice before the grade

Review owner-approved evidence, follow the YES signal, and make practice predictions with simulated $JKB before the final PSA result is revealed.

Open Before the Slab →

Collector workflow

AI Grading Readiness & Risk

Visual analysis of grading risk from front and back card images.

Upload clear images of a card's front and back to get a structured readiness review across surface, corners, edges, centering, and image quality.

Image-based only · No grades · No predictions

Front + back image analysisVerified-email accessSurface / corners / edges / centeringImage quality reviewed
Open grading readiness scanHow it works

Readiness review

SurfaceVisual check
CornersVisual check
EdgesVisual check
CenteringVisual check
Image qualityVisual check

A bounded inspection helper for collectors deciding what needs a closer look before any real-world submission decision.

Index spotlight

Curated picks from the Kingdom collection you can open in the index, plus a live sample of public Instant Listings when inventory is available—prices and conditions come straight from active offers, not projections.

Featured cards

Recently listed on Instant Listings

Trading Card Games

Each route is a full workspace for that TCG—sets, card detail, sold history, and marketplace eligibility where the beta supports it. Status badges reflect real coverage, not marketing fluff.

Pokémon

Live

Live Pokémon TCG pricing, sales history, and population data across vintage and modern sets. Built for serious collectors tracking real market activity.

  • Vintage & modern sets in the index
  • Sold listings and graded sales history
  • Instant Listings when inventory is available
Browse sets & cards→

Riftbound

Live

Riftbound TCG card prices, sold listings, and market data. Track sets and individual cards with real market activity.

  • Early-access coverage with honest status
  • Card and set pages tied to market data
  • Growing alongside Riftbound releases
Browse sets & cards→

One Piece

Live

One Piece TCG card prices, sold listings, and market data. Track sets and individual cards with real market activity.

  • English-language set coverage in the index
  • Price history aligned to supported inventory
  • Same search and portfolio tools as other TCGs
Browse sets & cards→

What is JK Index?

JK Index is a market intelligence and collector platform for trading card games.

Search sold listings, market prices, graded sales history, and supported marketplace listings across Pokémon, One Piece, and Riftbound. Track your collection, follow raw-to-graded context, and explore Before the Slab practice markets before the final PSA result is revealed.