Market aggregation and routing

The same event often trades on more than one prediction-market venue. Oddeon brings compatible markets together and checks each available order book when you request a quote.

Supported venues

Oddeon brings together markets from Polymarket, Kalshi, and Limitless. Limitless markets settle on Base using USDC. The venues available for a specific market are shown on its market page and in the quote before you trade.

One market view

Markets are combined only when their outcomes and resolution rules line up. You see one market page, while venue badges show where its liquidity comes from.

Always read the rules on that page. Similar-sounding markets can use different dates, sources, or definitions and should not be treated as the same trade.

Smart order routing

When you enter an amount, Oddeon compares price and depth across the available routes. The order can go to one venue or split across several when a split offers a better blended fill.

Before you confirm, the quote shows:

• Average execution price.
• Expected shares and payout.
• Fees and slippage.
• The venue or routes expected to fill the order.

Short-lived quotes

Prices can move between entering an amount and pressing confirm, so every quote has a short timer. If it expires or the price moves beyond your tolerance, Oddeon shows a new quote for review.

What routing cannot remove

Routing can improve access to price and liquidity. It cannot remove:

• Market and liquidity risk.
• Blockchain or venue delays.
• Differences in market-resolution timing.
• The need to verify deposit networks and assets.
• The need to protect your account and recovery credentials.

Continue with Prices and payouts or Place your first trade.