What is PolySensei?

PolySensei is a free Chrome extension that enhances the Polymarket trading experience. It layers live signals and data—such as whale flow, smart-money track records, true slippage, fair value, and live scores—directly onto the existing Polymarket interface. The extension is non-custodial, adds zero fees, and is designed to feel native to the platform.

How to use PolySensei?

Install the free Chrome extension from the Chrome Web Store. Once installed, it automatically integrates with Polymarket, displaying enhanced data on every market page. Users can hover over numbers or colors for plain-English explanations, use the command center to scan the entire board for mispricing, and connect their wallet to see live P&L. No separate account is required.

Core features of PolySensei

Whale flow: live tracking of large trades with buy/sell tags and summed volume
Smart money: win rates and positions of top holders on each outcome
Entry calculator: true fill price, slippage, exact payout, and Kelly-optimal stake
Live context: live scores, Vegas lines, crypto/stock stats next to the price
Order book: full depth, resting walls, and buy/sell pressure
Command center: scan all markets for mispricing, whale activity, and UMA disputes
Fair value & edge: model-based fair price vs market price
Resolution radar: countdown to settlement with UMA risk warnings