Loan Endpoints

The endpoints below allow you to interact with Loan.

Contract Name

• ApproveTrade

Mainnet Addresses

Network	Contract Address
Arbitrum	0x4d5797F05992c9E81c64a39CEe5A8BA56df8D38e
Base	0x54A70516e9c0223F4a92bE3a4832a06f546e783B
Ethereum	0x54A70516e9c0223F4a92bE3a4832a06f546e783B
Polygon	0x4d5797F05992c9E81c64a39CEe5A8BA56df8D38e
Bitlayer	0x54A70516e9c0223F4a92bE3a4832a06f546e783B
BSC	0x83541A6B4A5c5512624CcbF35E9c77290f4068C0
Apechain	0x9688B0965885ca8Db34f3C7187A3D0eD4E633852

---

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)