One Piece Card Grading App — Free, Instant AI Grades
From OP-01 Romance Dawn leaders to manga-art alternate rares, CardMintAI grades your One Piece TCG cards the way PSA does — centering, corners, edges, surface — in seconds. The free One Piece card grading app built for the hobby's fastest-growing TCG.
- 1 Upload a card photo
- 2 Get an AI grade in ~2s
- 3 Decide what's worth submitting
All Sets
OP-01 to Latest
Alt-Art
Specialist
2 Sec
Per Card
Free
To Start
Built for the One Piece TCG
One Piece cards have their own quirks — heavy ink coverage, manga-art textures, tight centering tolerances. Our AI is tuned for them.
Leader & Alt-Art Analysis
Grade leaders, super rares, secret rares, and manga-art alternate rares with attention to the surface and edge issues common on high-pull OP cards.
Dark-Border Whitening Detection
One Piece cards' dark borders make edge whitening obvious to graders. Our AI catches it precisely so your predicted grade matches reality.
Centering Precision
Exact front and back centering measurements — critical on OP cards where off-center cuts frequently knock an otherwise-mint card down a grade.
Texture & Foil Scanning
Detects micro-scratches, print lines, and foil imperfections on textured alternate-art and parallel cards that the naked eye misses.
Every Set Supported
From Romance Dawn (OP-01) through the latest releases and promos, the AI recognizes One Piece cards across all sets and rarities.
Pre-Grade Before You Submit
Screen which One Piece cards deserve a PSA or CGC fee. Submit only your 9–10 candidates and skip wasting money on borderline cards.
Use cases
Who Uses CardMintAI?
Discover how different professionals use CardMintAI
Collectors & Hobbyists
Assess Card Conditions Before Grading
Save time and money by identifying high-value cards to prioritize for grading. Get instant AI grading to determine the potential grade of your cards before submitting them to official grading services.
Resellers & Dealers
Generate Grading Reports for Sales
Boost sales by showcasing AI-backed grading reports alongside your card listings. Provide potential buyers with detailed grading reports, increasing the credibility of your listings.
Marketplace Sellers
Integrate Grading for Product Listings
Increase buyer confidence with consistent, AI-generated grading reports. Integrate AI grading directly into your marketplace listings, allowing buyers to view card conditions instantly.
Grading Pre-Checkers
Evaluate Card Quality Before Submitting
Avoid unnecessary grading fees by assessing card condition early. Use AI to pre-check cards and get a sense of their grading potential before submitting to PSA/BGS.
Investment Groups
Track Grading History and Resale Value
Leverage historical data to identify undervalued cards with high grading potential. Monitor card grading history and predicted resale value to make informed investment decisions.
Developers & Integrators
Build Custom Grading Workflows with the API
Automate grading at scale and embed grading reports in your own platform. Use the CardMintAI API to integrate AI-powered card grading directly into your marketplace, app, or internal tools.
Popular Grading Tools
Pay Less Than a Single PSA Fee
Most collectors grade in bursts before a submission — so start with pay-once credit packs that never expire, or subscribe monthly if you grade all the time. Either way it's a fraction of one PSA fee.
Collector
- 60 gradings/month
- Batch grading (up to 10)
- API access
- Analytics dashboard
- Priority support
Master
- 150 gradings/month
- Everything in Collector
- Batch grading (up to 10)
- Dedicated support
- Custom integrations
Pay-Once Credit Packs — Never Expire
Only grade when you're prepping a submission? Skip the subscription. Buy credits once, use them whenever — they never expire and unlock full subgrade reports instantly. 1 credit = 1 grade.
Explore Credit Packs →Frequently Asked Questions
Is there a One Piece card grading app?
Yes. CardMintAI is a free One Piece card grading app. Upload photos of your OP TCG cards and the AI predicts a PSA-style grade — centering, corners, edges, and surface — in about two seconds, with subgrades for each category.
What's the best app to grade One Piece cards?
CardMintAI is purpose-tuned for the One Piece TCG, accounting for dark-border whitening, tight centering, and textured alt-art surfaces. It grades leaders, super rares, and manga-art rares for free, making it the most accessible option for OP collectors.
Can the AI grade One Piece alternate-art cards?
Yes. The AI scans textured and foiled alternate-art and manga rares for micro-scratches, print lines, and foil flaws, then predicts the grade those surface conditions would earn at PSA or CGC.
Is One Piece card grading free with CardMintAI?
Yes. You can grade One Piece cards for free with no credit card required. Upgrade only if you want unlimited grading or full collection tracking.
Should I get my One Piece cards graded?
Grade One Piece cards when the graded price clears the raw price plus the fee — usually true for sought-after leaders and alt-arts in high grade. Pre-grade free with CardMintAI to confirm the expected grade before paying a grading company.
Grade Your One Piece Cards in Seconds — Free
Join collectors pre-grading their OP TCG cards with AI before paying PSA or CGC fees.