Getting Started with PredMart
Open a bigger position on any prediction market outcome than your cash alone allows. Connect your wallet, put down some money (your margin), pick an outcome, and confirm.
What You Need
A crypto wallet: MetaMask, Coinbase Wallet, Rabby, or any wallet that works with Base.
USDC on Base: This is the money you trade with. Get it by moving USDC to Base at Base Bridge or withdrawing from an exchange. You also need a tiny bit of ETH for transaction fees (a few cents).
Step 1: Connect Your Wallet
- Go to predmart.com.
- Click Connect Wallet and pick your wallet.
- Approve a free message to confirm it is you.
Step 2: Pick a Market
Browse or search for an event you want to trade on. Each market shows the current price and recent activity. Click a market to open the trading panel.
Step 3: Pick Your Outcome and How Big
There is nothing to deposit up front — you trade straight from your wallet. Your margin (at least $1) leaves your wallet only when you open a position, and payouts land back in the same wallet.
- Outcome - Back the result you believe in. For a Yes/No market, pick Yes or No. For a multi-option market (like an election or sports match), pick the team or candidate you think will win.
- Margin - The money you put down to back your position, taken directly from your wallet when you confirm.
- Leverage - Choose how much bigger you want your position, up to 5x (five times your margin). Higher leverage means bigger wins but also bigger losses.
- Position Size - The total value of your position. For example, with $100 margin and 5x leverage, you control a $500 position.
The panel shows you the entry fee (0.1% of your position size) and the price at which you would be liquidated. More details in Margin and Liquidation.
Step 4: Confirm Your Trade
- Review the entry price, fees, and liquidation price.
- Click Open Position.
- The first time you trade, approve USDC once in your wallet.
- Approve the trade in your wallet (no gas fee for this step).
Your position now appears in your portfolio. Your money stays inside the smart contract — the PredMart team cannot take it, move it, or freeze it. To open, close, or settle a trade you go through PredMart's system.
What Happens After You Open
| What happens | Result |
|---|---|
| Your outcome is winning | Close anytime to take your profit (10% fee on gains). |
| Your outcome is losing | If your margin drops to 15%, your position is closed automatically and you lose the margin left in it. |
| The market ends | Your position settles at the final price. See Market Resolution. |
Fees at a Glance
| Fee | When it applies | How much |
|---|---|---|
| Entry fee | When you open | 0.1% of position size |
| Profit fee | When you close with a gain | 10% of your profit |
| Operation fee | Each action | Up to $0.01 |
Full breakdown in Fees.
Tips for New Traders
- Start small - Try a small position first to learn how it works.
- Watch your positions - Prices can move fast.
- Understand leverage - At 5x, even a small price move against you can wipe out your margin.
- Check the URL - Always use
predmart.com.
Learn More
- How Positions Work - What happens from open to close
- Margin and Liquidation - When you get liquidated and why
- Fees - Every fee explained
- Providing Liquidity - Put money in the pool and earn fees