Tools
Order Book
Live bid/ask depth from the Polymarket CLOB. Updated in real-time via WebSocket.
Reading the book
| Bids (green) | Buy orders — what people are willing to pay |
| Asks (red) | Sell orders — what people are willing to accept |
| Spread | Gap between best bid and best ask. Tighter = more liquid. |
What you see
- 15 levels of depth on each side
- Color-coded bars showing relative size at each price
- 40 recent trades flowing in real-time
- Spread indicator always visible between bid and ask
Using it to trade better
The order book isn't just decoration. Before placing a big trade, check if there's enough liquidity at your target price. A thick wall of bids below you means support. A stack of asks above means resistance.
For limit orders, place yours just inside the best bid/ask to increase fill priority. Or use Auto — it does this for you automatically.
A wide spread means low liquidity. That's not necessarily bad, but it means market orders will have more slippage. Consider using Limit or Auto instead.