Guide
Everything you need to know about OPMT
📖What is OPMT?
OPMT (One Piece Market Tracker) is a tool for tracking One Piece TCG card prices and spotting investment opportunities. It pulls real-time market data so you can see where a card's price is heading — before everyone else does.
At its core, OPMT gives you three types of scoring:
- LT Score — long-term investment signal based on a card's rarity, pull rate, franchise relevance, and market fundamentals.
- ST Score / Hot Deals — short-term opportunities where low supply and active sales suggest an imminent price spike.
- MT Score — medium-term blend that balances both: cards with strong fundamentals and recent momentum.
Free accounts can browse the dashboard and view card details. Premium unlocks the Custom Score builder, letting you tune the LT scoring weights to match your own investment strategy and run per-card custom score calculations.
📈LT Score (Long-Term)
The LT Score is a 0–100 composite signal indicating how attractive a card is as a long-term hold. A higher score means the card has stronger fundamentals relative to its current market position. It is computed nightly and shown on every card page.
The default formula uses seven enabled categories. Each produces a 0–100 sub-score and is weighted proportionally — the weights below sum to 100.
| Component | Weight | What it measures |
|---|---|---|
| Pull Rate | 21% | Expected packs needed to pull one copy. Cards like Manga, SP, SSP require hundreds of packs — these score highest. Regular non-special cards score 0 in this category. |
| Popularity | 18% | Character's central importance to One Piece lore, ranked manually by the admin. Luffy (#1) scores 100; unranked characters receive a neutral 25. |
| Sales Velocity LT | 14% | Detected sales over 30d and 90d, normalised against the typical volume for cards of the same special type. A Manga card that outsells other Manga cards ranks better than a common with higher raw volume. |
| Scarcity | 11% | Number of available NM listings on the market, on a smooth curve: ≤25 copies = full score, over ~1,250 copies = 0. |
| Rarity Tag | 11% | Based on product tags, not the raw rarity field. Manga / SSP = 100 · Wanted Poster = 85 · SP = 75 · Manga Event / Treasure Rare = 50 · Leader AA = 35 · SEC = 30 · Alt Art = 25 · None = 0. |
| Market Arbitrage | 10% | TCGPlayer (US) price versus CardMarket (EU) price. When the same card trades 25–50% higher in the US, the EU price is usually lagging — a bullish signal. |
| Rarity Relative Value | 8% | How the card's current price compares to the median for cards of its same set and rarity class, with a velocity check to filter out stale listings. |
| Set Age | 7% | Older sets (Wave 1: OP01, ST01–ST03) have fewer new copies entering the market. Newer sets have fresh print runs and lower scores. |
The weights above are the website defaults. Premium users can create their own formula with custom weights — see the section.
⭐ST Score / Hot Deals
The ST (Short-Term) Score powers the Hot Deals page. A card qualifies as a Hot Deal when its offer book shows that buying fewer than 50 copies would push the price up 50% or more. Once it qualifies, it gets scored 0–100 across five dimensions:
| Component | Max | What it measures |
|---|---|---|
| Supply Scarcity | 20 pts | Total NM/English listings. ≤20 copies scores full points. |
| Sales Velocity | 25 pts | Average daily copies sold over 30 days. Higher turnover = higher score. |
| Price Momentum +25% | 20 pts | Copies needed to push the price up 25%. Fewer copies = tighter market. |
| Price Momentum +50% | 15 pts | Copies needed to push the price up 50%. The eligibility threshold. |
| Time to +25% | 15 pts | Estimated days until the price target is reached at current sales pace. ≤3 days = full points. |
Only cards priced above €0.50 are considered, and deals expire after 7 days if not refreshed by the next sync.
🔮MT Score (Medium-Term)
The MT (Medium-Term) Score blends the LT and ST scores with the card's 30-day price trend:
The trend component maps the current price against the 30-day average: ±3% counts as neutral (50), and the score saturates at ±15% (100 for a strong rise, 0 for a strong fall). Cards without enough price history fall back to a plain LT/ST average.
A card needs both a strong long-term foundation and active short-term momentum to rank highly. Cards that score well on fundamentals alone (high LT, no ST signal) or on short-term supply compression alone (high ST, weak fundamentals) will rank lower than cards where both forces are aligned.
The Medium Term tab shows the top 50 cards ranked by MT score. It is a Premium-only feature.
🧮Price Increase Calculator
Every card detail page has a Price Increase Calculator. It walks through the live offer book to estimate exactly how many copies would need to sell before the cheapest listing reaches your target price.
- How many copies need to sell to reach that price
- Estimated days based on the card's 30-day sales average
- Whether the estimate is exact (within visible listings) or extrapolated
💎Credits
Credits are the currency used to run custom score calculations on individual cards. Each time you apply your custom formula to a card, it costs 1 credit.
Subscription
You receive 1,000 credits when you activate a Premium subscription.
Referrals
Earn 100 credits each time someone you referred upgrades to Premium using your referral code.
Public Formulas
Earn 1 credit for every 10 times other users run a formula you published.
You can check your current credit balance on your Account page.
◈Custom Score
This feature requires a Premium subscription.
Upgrade to Premium🌐Public Formulas
This feature requires a Premium subscription.
Upgrade to Premium🤖Discord Bot
The OPMT Discord bot brings market data and investment signals directly into your Discord server. All commands use slash syntax — type / in any channel to see the full list.
| Command | What it does |
|---|---|
| /card [name] | Full card overview — price, LT/ST/MT scores, trend, listings |
| /card [name] country:[XX] | Find the cheapest NM/English listing in a specific country (e.g. PT, DE, FR) |
| /score [name] | Investment scores only — LT, ST, and MT |
| /price [name] | Quick price check with 7d/30d averages |
| /hotdeals | Top 5 current Hot Deals (ST score — short-term supply squeezes) |
| /longterm | Top 5 Long-Term investment picks (LT score) |
| /sellsignals | Top 3 active sell signal cards |
| /credits | Check your credit balance and daily command usage |
| /link [code] | Link your OPMT account to Discord (get code from Account page) |
| /help | Show all available commands |
Linking your OPMT account to Discord
/link [code]. The code is valid for 30 minutes.🔗Linking your CardMarket Identity
When you run /card [name] country:[XX] in Discord, OPMT shows the cheapest NM/English listing in your chosen country. If the seller has linked their CardMarket identity to their OPMT account, the bot will tag them directly in Discord.
How to discover your seller hash
/card [card number] country:[your country code]Example:
/card OP01-001 country:PT7df6dc1f73202cbfaa4fd9fba9efd948cbc81b258b7425315b38bf05c79d0a33Your seller hash only changes if CardMarket changes their internal seller ID system, which is extremely rare. Once set, you won't need to update it.
Have questions? The community and team are active on Discord.