CardSignal
Tracking 9+ One Piece TCG groups

Find One Piece TCG deals 10x faster

Every buy/sell post from 9 Facebook groups, searchable in seconds. Stop missing deals.

Search Cards FreeSee How It Works

No credit card required

Luffy Card

Why Facebook groups don't work

Most One Piece TCG trading happens on Facebook. But finding deals there is broken.

Posts vanish in minutes

Hot deals get buried under new posts. Miss one by 10 minutes and it's already gone.

Zero organization

No search, no filters. Scroll past 50 posts to maybe find what you're looking for.

Hours wasted daily

Checking 5+ groups burns time you don't have. And you still miss deals.

One dashboard for the entire market

Every listing from every group, organized and searchable.

Search any card... OP01-121, Zoro alt art...
Yamato
Yamato
OP01-121 · Secret Rare · Mike T. · 3 min ago
SELLING
$45
Shanks
Shanks
OP01-120 · Secret Rare · Sarah K. · 8 min ago
BUYING
$85
Uta
Uta
OP02-120 · Secret Rare · CardShop NYC · 15 min ago
SELLING
$42
Charlotte Katakuri
Charlotte Katakuri
OP03-099 · Leader · Alex M. · 22 min ago
SELLING
$38

All listings, one place

Every post from 9+ groups, updated every 5-30 minutes.

Grouped by card

See all buyers and sellers for any card in one view.

Search and filter

Find exactly what you need. Filter by set, price, or condition.

Built for serious traders

Every feature saves you time and helps you find better deals.

5-30 min updates

Never miss a listing

We monitor 9+ Facebook groups continuously. New posts appear in your dashboard within minutes.

Market view

See the whole market

Every buyer and seller for a card, grouped together. No more guessing who has what.

Email alerts

Get instant alerts

Set alerts for cards at your target price. Get notified the moment someone posts a match.

Price data

Know if it's a deal

See recent asking prices across the market. Spot underpriced cards before anyone else.

9+
Groups tracked
1,000+
Posts daily
500+
Active markets
<5 min
Data freshness

Traders are finding deals faster

Join hundreds of collectors who stopped wasting time on Facebook.

“I used to spend 2 hours a day checking groups. Now I find what I need in under 5 minutes.”

Mike R.
Collector

“Snagged a Shanks alt art for $20 under market because I saw the post 3 minutes after it went up.”

Jessica T.
Flipper

“This is what I thought TCGPlayer would be for One Piece. Way better for Facebook group deals.”

Alex K.
Shop Owner

Secure login

Google OAuth only. No passwords stored.

Stripe payments

Your card info never touches our servers.

Read-only access

We never post on your behalf.

Frequently asked questions

How does CardSignal get data from Facebook groups?
We monitor public and authorized Facebook groups for new buy/sell posts. Our system reads and structures these posts so you can search them instantly. We never post, comment, or interact on your behalf.
Will using CardSignal affect my Facebook account?
No. CardSignal operates independently from your personal Facebook account. You sign in with Google, and we never access your Facebook login or post anything on your behalf.
How fresh is the data?
Free users get updates every 30 minutes. Pro subscribers get updates as fast as every 5 minutes, so you see new listings almost in real-time.
What's included in the free plan?
Free accounts can track up to 5 cards with 30-minute refresh intervals. Pro ($49/mo) unlocks unlimited cards, 5-minute refresh, email alerts, and price history.
Can I cancel anytime?
Yes. No contracts, no commitments. Cancel your Pro subscription anytime from your dashboard and you'll keep access until the end of your billing period.

Someone just posted the card you want.

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