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Beta Release: JK Index is in active development. Data coverage is expanding and you may see gaps or inconsistencies as we iterate. Feedback is welcome.

Track TCG prices, manage your collection, and buy or sell supported cards

Search Pokémon, One Piece, and Riftbound for sold listings, market price, and graded history—then track portfolio value and trade supported cards in the marketplace beta.

Portfolio tracking is live. Marketplace beta is live for supported cards and approved sellers.

Search the index

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

Supported TCGs

3

Pokémon, One Piece, Riftbound

Portfolio

Live

Collection & value tracking

Marketplace

Beta

Supported cards · approved sellers

Changelog

Dev updates →

Public changelog of shipped work

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 →

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 trading card game market and collection platform built for collectors. Search sold listings, market price, and graded sales history for supported Pokémon, One Piece, and Riftbound cards. Track your collection and portfolio value, and buy or sell supported cards through the marketplace beta.

The Kingdom's Quest

The Kingdom began with a mission: collect every 1st Edition Jigglypuff and make it the most iconic non-holo in Jungle. What started as one collector's passion became a community — and the foundation for JK Index.

100% of creator fees support the collection mission — and help fund continued JK Index development.