Real-time card ID
A TCG vision model identifies the card from a single video frame. Accuracy depends on how clearly the streamer shows the card — every scan carries a confidence label so you know when to trust it.
Know the card.
Know the price.
Before the next bid.
Slabbr is a browser extension for whatnot.com. Press S during any livestream — it identifies the Pokémon card on screen and shows live market price, condition ladder, and a real-time profit signal against the current bid.
~3s
scan → price
3
confidence levels
5
condition tiers
01 How it works
1
Install the extension
One-click install from your browser's extension store. Sign in with your email to activate your free trial — no card required.
2
Open any Whatnot stream
Slabbr lives on whatnot.com. No setup per stream — it's there when you need it.
3
Press S
Card, set, price, condition ladder, and the live bid tracker — all under 5 seconds. Decide before the timer hits zero.
02 What you get
Live market price
Pulls from JustTCG — TCGPlayer-backed pricing for NM, LP, MP, HP, and DM. Click any condition to flip the headline.
Live bid tracker
Watches the auction's current bid and computes your margin in real time. Green when there's room. Orange when it's close. Red when you're underwater.
Confidence signal
HIGH, MEDIUM, LOW — driven by the vision model's match scores, tuned on real scans. When Slabbr's unsure, you'll know.
Candidate swap
Wrong set? Click any of the 4 alternates — prices update instantly from cache. No second API call, no waiting.
Built-in collection
Won a card? One click logs it with the snapshot price, your bid, and condition. Tracks your spend, market value, and how much you've saved skipping over-priced bids.
03 In the wild
Real scans from real Whatnot streams. Modern cards, vintage holos, Japanese sets — Slabbr handles them all.
Built-in collection
Every win, tracked automatically.
Tap WON BID after you take a card and Slabbr snapshots it into your collection — set, condition, what you paid, and the market price at that moment.
- Live profit — see total cost basis vs current market value at a glance.
- Money saved — Slabbr banks the overage every time you skip an over-priced bid, so you can see what it's saving you.
- No spreadsheets — it's all in the overlay, updated as you scan.
04 Pricing
Start free for 30 days — 15 scans per day, no card required. Upgrade only if Slabbr's paying for itself.
Free
$0/month
For trying it out
- 15 scans/day for your first 30 days
- 8 scans/day after
- Full card ID + market price
- Live bid tracker
- Save up to 5 cards in collection
Basic
$9.99/month
For weekly watchers
- 75 scans/day
- Everything in Free
- Unlimited collection logging
- Money-saved ledger
- Email support
Pro
$24.99/month
For daily streamers
- 300 scans/day
- Everything in Basic
- Priority pricing-source fallback
- Faster scan response
- Priority support
All plans include English + Japanese card support, all condition tiers, and free updates. Paid plans cancel anytime from the Stripe portal. Prices in USD. Daily caps reset at 00:00 UTC. See our refund policy.
Start scanning in 60 seconds.
Install the extension, sign in with your email, and you're live on Whatnot in under a minute. 15 free scans a day for your first 30 days — no card required.
Works on Chrome, Edge, Brave, Arc, and Firefox. Pokémon TCG, English + Japanese.
05 FAQ
What is Slabbr exactly?
A browser extension that runs on whatnot.com. During any live auction, you press S and Slabbr identifies the card on the stream and shows the live market price — plus a real-time profit signal against the current bid. Built for Pokémon TCG, English + Japanese.
What will it cost?
Free for your first 30 days (15 scans/day, no card). After that, the free tier drops to 8 scans/day and paid plans start at $9.99/month (Basic, 75 scans/day). See the full pricing breakdown. Cancel anytime — this isn't a venture play, it's a tool the founder uses every day.
What cards does it work with?
Pokémon TCG, English + Japanese. Other TCGs (Magic, Lorcana, One Piece, Sports) are on the roadmap. JustTCG indexes most modern + vintage sets; very-new sets (within a few weeks of release) may not have prices yet — Slabbr shows "no pricing data" rather than guessing.
Is my data safe?
The extension stores API tokens in chrome.storage.local on your machine — never sent to a Slabbr server. The only data leaving your browser is the video frame for the scan, sent directly to the identification API. No telemetry, no tracking pixels, no analytics in the extension itself.
Why charge at all?
Every scan costs real money — vision API + pricing API calls add up. The free tier covers casual use; the paid tiers cover heavier users and keep the lights on. Pricing is set to hit break-even at ~9 paying users at the $9.99 tier. No VC, no growth-at-all-costs nonsense.
Can I cancel anytime?
Yes. Manage your subscription from the Stripe customer portal — link is in the extension popup once you're paid. You keep access through the end of your billing period, then drop back to the free tier.
How accurate is it?
It depends heavily on how the streamer shows the card — a clear, steady, well-lit shot identifies reliably; a blurry, angled, or half-second flash is much harder. That's the nature of reading cards off a live video feed. So every scan shows a HIGH / MEDIUM / LOW confidence label, and if Slabbr gets one wrong you tap "report wrong" and we refund that scan — you're never charged for a misread.