See what the rest of the table can't.
Every edge the sharps pay for, on the page you already trade: whale flow, smart-money track records, true slippage, fair value, live scores, and the whole exchange scanned for mispricing. Free, non-custodial, zero added fees.
PolySensei doesn't replace Polymarket. It disappears into it. The same page, your theme, every market, with the data the pros pay for layered quietly on top.
It feels like Polymarket always had it: instant, native, no second app to babysit. You just trade, the way you already do, with everything you were missing finally in view.
The same trade, with the lights on.
Most of Polymarket trades on price alone. The edge is everything the price does not tell you, and it is usually hiding in plain sight.
- You see 64¢ and a name. Nothing else.
- The sharps are loading the other side and you have no idea.
- Your $1k order quietly eats 5% slippage.
- A market resolves on UMA and snaps to 0 overnight.
- Whales dumped ten minutes ago and the price has not caught up.
- Fair value, smart money and whale flow, on the same line.
- The proven winners’ side, flagged before you click buy.
- Your true fill price and slippage, before you commit.
- Resolution risk flagged days in advance.
- Net big-money flow, live, before the move.
Six edges, on every market.
PolySensei layers a dozen live signals onto the page you already trade. These are the ones that move money.
Follow the money the moment it moves.
Big trades, tagged buy or sell and summed live, before the price catches up.
Know if the sharps are on your side.
The top holders on each outcome, scored by how often they win, and whether they are up or down here right now.
Never overpay. Always size right.
Your true fill price, slippage, exact payout and Kelly-optimal stake, before you click buy.
The outside world, on the market.
Live scores, vig-stripped Vegas lines, plus crypto and stock stats, next to the price.
See the book. Spot the walls.
Full depth on both sides, resting walls flagged, live buy-versus-sell pressure.
Scan the whole board.
Every mispricing, whale and UMA dispute across Polymarket, with filters.
Quietly handled, every market.
American odds
Every price as the moneyline you already think in. 64¢ becomes -178.
Fair value & edge
Fair price vs market price, and your edge in cents, before you click.
Overround radar
On multi-outcome events, when prices add past 100% the longshots are overpriced.
Your position
Live profit and loss on the exact market, from your connected wallet.
Holder concentration
How much of a side one whale controls, so you spot a fragile price before it moves.
Price chart
Clean price history from one hour to one week, read the trend at a glance.
Resolution radar
A live countdown to settlement, plus a warning when a market resolves on UMA and can snap to 0 or 1.
Follow the sharps
Open any top holder’s Polymarket profile in one click and track the proven winners.
Explains everything
Hover any number or colour and it tells you what it means, in plain English.
Built for speed
Every signal prefetched and painted the instant a market loads. It feels native.
Native theme
Adopts Polymarket’s light or dark mode automatically. It just belongs.
Every number, explained.
We assume you know nothing and explain it anyway. Hover any figure or colour in the extension and it tells you what it means in plain English. Here is the card, decoded.
- Fair valueWhere our model says the price should be. A positive edge means the market is underpricing this side, so there is value in buying it.
- Smart moneyThe share of past markets the biggest holders here have actually won. A high number means proven winners are sitting on this side.
- Whale flowNet big-money buying in the last hour, before the price has caught up. It shows you where conviction is forming.
- $1k slippageHow far your real fill price moves if you buy $1k of this outcome. Low means the book is deep and you will not overpay.
- ResolutionA warning when a market is settling on UMA and the price can snap to 0 or 1. You trade it knowing the risk, not after.
Real data. The same the pros pay for.
No black box, no made-up numbers. Every signal is computed live from public Polymarket and on-chain data the moment you open a market.
On-chain holder history
Every wallet on a market, scored by how many of its past markets resolved in its favour. This powers smart money.
Live CLOB order book
The real depth on both sides, straight from Polymarket’s own exchange, so slippage and walls are measured.
Global trade feed
Every fill across Polymarket in real time, so whale flow lands in your panel the second the money moves.
ESPN and Vegas lines
Live scores plus the vig-stripped sportsbook odds on game markets, so you trade the real game and price.
Live in under a minute.
Add it to Chrome
One click from the Chrome Web Store. No account, no signup, nothing to configure.
Open any Polymarket market
PolySensei recognises the page and loads instantly, in your own light or dark theme.
Trade with the edge in view
Whale flow, smart money, fair value and the full book, layered right where you already click buy.
We take a cut of nothing. And we look after our own.
Every other tool skims your trades. PolySensei takes zero, you pay the exact same price as trading directly on Polymarket. Instead, every dollar you trade through us earns you Sensei Points. Down the line you redeem them for real gifts and rewards. A genuine thank you to the traders who ride with us, no token, no catch.
No catch. Here is why.
Is it really free?
Yes. No subscription, and not a cent added to your trades. PolySensei earns from Polymarket’s builder program on the volume you route through it, at zero extra cost to you. You pay the exact same price as trading directly on Polymarket.
Does it ever touch my funds or my keys?
Never. PolySensei is non-custodial. You sign every order in your own wallet, exactly as you do today. It reads public market data and your public positions, and nothing else leaves your browser.
Will it slow Polymarket down?
No. Every signal is prefetched and painted the instant a market loads. It feels native, with no spinner sitting between you and the trade.
Do I need an account?
No account, no signup, no email required. Install it and it works on every market the moment you open one.
Which wallet do I need?
Whatever you already use on Polymarket, whether you signed in with email or a browser wallet. Nothing changes about how you trade.
Get the edge.
Leave your email and be first the day it launches. No spam, ever.