> For the complete documentation index, see [llms.txt](https://docs.paddlefi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.paddlefi.com/api-documentation/loan-endpoints.md). # Loan Endpoints ## **Contract Name** * ApproveTrade ## **Mainnet Addresses**
NetworkContract Address
Arbitrum0x4d5797F05992c9E81c64a39CEe5A8BA56df8D38e
Base0x54A70516e9c0223F4a92bE3a4832a06f546e783B
Ethereum0x54A70516e9c0223F4a92bE3a4832a06f546e783B
Polygon0x4d5797F05992c9E81c64a39CEe5A8BA56df8D38e
Bitlayer0x54A70516e9c0223F4a92bE3a4832a06f546e783B
BSC0x83541A6B4A5c5512624CcbF35E9c77290f4068C0
Apechain0x9688B0965885ca8Db34f3C7187A3D0eD4E633852
*** ## **Smart Contract Interface** ### **1. Get the Nonce of the User's Order** Fetch the nonce of the order created by the user. * **Function**: `nonces(address maker) returns (uint256)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | --------- | --------------- | | `maker` | Yes | `address` | Creator Address | #### Response Parameter | **Parameter Name** | **Type** | **Description** | | ------------------ | --------- | ---------------- | | `nonce` | `uint256` | User order nonce | *** ### **2. Calculate the Hash of the Order** Calculate the hash of an order, required when creating the order. * **Function**: `hashOrder(Order memory order) returns (bytes32)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | -------- | --------------- | | `order` | Yes | `Order` | Order details | #### Response Parameter | **Parameter Name** | **Type** | **Description** | | ------------------ | --------- | --------------- | | `orderHash` | `bytes32` | User order hash | *** ### **3. Lend Funds Using the Signed Order Information** Use the borrower's signed order to lend funds. * **Function**: `loan(Order memory loanOrder)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | -------- | -------------------------------------------- | | `loanOrder` | Yes | `Order` | Order information from centralized interface | #### Order Structure | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------- | ------------ | --------- | --------------------------------------------- | | `maker` | Yes | `address` | Borrower Address | | `taker` | Yes | `address` | Lender address (use 0 address) | | `asset` | Yes | `Asset[]` | List of collateral assets | | `currency` | Yes | `address` | Funding token address | | `price` | Yes | `uint256` | Loan amount | | `deadline` | Yes | `uint256` | Fundraising deadline | | `duration` | Yes | `uint256` | Loan duration | | `interestPerSecond` | Yes | `uint256` | Interest accrued per second after loan | | `endTime` | Yes | `uint256` | Redemption deadline (use 0 if not applicable) | | `themselves` | Yes | `bytes` | Signed transaction data | *** ### **4. Repay Principal and Interest to Redeem Asset** Allows the borrower to repay the principal and interest to reclaim the collateral. * **Function**: `redeem(bytes32 orderHash)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | --------- | --------------------------- | | `orderHash` | Yes | `bytes32` | Order hash (from interface) | *** ### **5. Liquidate Overdue Orders** Allows the lender to liquidate an overdue order and claim the collateral. * **Function**: `liquidate(bytes32 orderHash)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | --------- | --------------------------- | | `orderHash` | Yes | `bytes32` | Order hash (from interface) | *** ### **6. Cancel Order** Allows the creator to cancel an order. * **Function**: `cancelOrder(Order memory order)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | -------- | -------------------------------------------- | | `order` | Yes | `Order` | Order information from centralized interface | *** ### **7. Cancel Multiple Orders** Allows the creator to cancel multiple orders in one call. * **Function**: `cancelMultipleOrders(Order[] memory orders)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | --------- | ------------------------------------------ | | `orders` | Yes | `Order[]` | List of order information (from interface) | *** ### **8. Cancel All Orders** Allows the creator to cancel all orders they have created. * **Function**: `cancelAllOrders()` #### Request Parameters This function does not take any parameters. *** ### **9. Buy Assets Using Signed Order** Allows a buyer to purchase assets using the seller's signed order. * **Function**: `buy(Order memory sellOrder)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | -------- | -------------------------------------------- | | `sellOrder` | Yes | `Order` | Order information from centralized interface | *** ### **10. Sell Assets Using Buyer's Signed Order** Allows a seller to sell assets using the buyer's signed order. * **Function**: `sell(Order memory buyOrder)` #### Request Parameter | **Parameter Name** | **Required** | **Type** | **Description** | | ------------------ | ------------ | -------- | -------------------------------------------- | | `buyOrder` | Yes | `Order` | Order information from centralized interface | *** ### **11. Get Platform Loan Fee Rate** Returns the platform commission ratio for loans. * **Function**: `feeRate() returns (uint256)` #### Response Parameter | **Parameter Name** | **Type** | **Description** | | ------------------ | --------- | -------------------------------------------- | | `feeRate` | `uint256` | Platform commission ratio (divide by 10,000) | *** ### **12. Get Platform Repayment Interest Fee Rate** Returns the platform commission rate for repayment interest. * **Function**: `interestFeeRate() returns (uint256)` #### Response Parameter | **Parameter Name** | **Type** | **Description** | | ------------------ | --------- | -------------------------------------------- | | `interestFeeRate` | `uint256` | Interest commission ratio (divide by 10,000) | *** ### **13. Get Minimum Repayment Interest Ratio** Returns the minimum interest rate for repayment. * **Function**: `interestFeeRate() returns (uint256)` #### Response Parameter | **Parameter Name** | **Type** | **Description** | | ------------------ | --------- | ---------------------------------------- | | `interestFeeRate` | `uint256` | Minimum interest rate (divide by 10,000) |