The Bridge API supports deposits from multiple chains and tokens. All deposits are automatically converted to **pUSD on Polygon**, which is used as collateral for trading on Polymarket.
Supported assets change over time. Always call `/supported-assets` for the
current list before initiating a deposit.
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## Minimum Amounts
Each asset has a `minCheckoutUsd` value—the minimum deposit amount in USD equivalent. Deposits below this threshold may fail to process.
Most L2 chains (Polygon, Arbitrum, Base, Optimism) have low minimums of $2, while Ethereum deposits require $7 minimum. Bitcoin and Tron have \$9 minimums due to higher bridging costs.