# Direct Contract Interaction
Some users choose to interact directly with the contract for full control, automation, or when the app interface is unavailable or limited.
### How to Get Trading Pair Information
* **Contract address**: 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
* **Method**: ParisV3
#### **Response:**
```
struct LeverageMargin {
uint256 notionalUsd;
uint16 tier;
uint16 maxLeverage;
uint16 initialLostP; // 1e4
uint16 liqLostP; // 1e4
}
struct SlippageConfig {
string name;
uint256 onePercentDepthAboveUsd;
uint256 onePercentDepthBelowUsd;
uint16 slippageLongP; // 1e4
uint16 slippageShortP; // 1e4
uint16 index;
ISlippageManager.SlippageType slippageType;
bool enable;
}
struct FeeConfig {
string name;
uint16 index;
uint16 openFeeP; // 1e4
uint16 closeFeeP; // 1e4
bool enable;
uint24 shareP; // 1e5
uint24 minCloseFeeP; // 1e5
}
struct PairView {
// BTC/USD
string name;
// BTC address
address base;
uint16 basePosition;
PairType pairType;
PairStatus status;
uint256 maxLongOiUsd;
uint256 maxShortOiUsd;
uint256 fundingFeePerBlockP; // 1e18
uint256 minFundingFeeR; // 1e18
uint256 maxFundingFeeR; // 1e18
LibPairsManager.LeverageMargin[] leverageMargins;
uint16 slippageConfigIndex;
uint16 slippagePosition;
LibPairsManager.SlippageConfig slippageConfig;
uint16 feeConfigIndex;
uint16 feePosition;
LibFeeManager.FeeConfig feeConfig;
uint40 longHoldingFeeRate; // 1e12
uint40 shortHoldingFeeRate; // 1e12
}
```
### **How to open a position at the opening price**
* **Contract address:** 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
* **Method**: openMarketTrade
* **Parameters**: data (tuple) Tuple: A tuple is an array of values e.g. \[ "0x4sd…","100","100"..]. It can contain strings, integers, and boolean values. The structure for this tuple is:
```
struct OpenDataInput {
// Pair.base
address pairBase;
bool isLong;
// BUSD/USDT address
address tokenIn;
uint256 amountIn; // tokenIn decimals
uint256 qty; // 1e10
// Limit Order: limit price
// Market Trade: worst price acceptable
uint256 price; // 1e8
uint256 stopLoss; // 1e8
uint256 takeProfit; // 1e8
uint256 broker;
}
```
**Example**: If the user wants to use 100 USDT to place a pending order for a BTC Long position with Price 20000, Quantity 0.001, Take Profit Price 25000, and Stop Poss price 19000, the inPutData should be:\["0x7130d2a12b9bcbfae4f2634d864a1ee1ce3ead9c","True","0x55d398326f99059fF775485246999027B3197955","100000000000000000000","10000000",,"2000000000000"2500000000000","1900000000000",1]
### **How to place a limit order**
* **Contract address**: 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
* **Method**: createLimitOrder(
* **Parameters**: data (tuple)
```
struct OpenDataInput {
// Pair.base
address pairBase;
bool isLong;
// BUSD/USDT address
address tokenIn;
uint256 amountIn; // tokenIn decimals
uint256 qty; // 1e10
// Limit Order: limit price
// Market Trade: worst price acceptable (acceptable price=index Price*(1+/- spread)
uint256 price; // 1e8
uint256 stopLoss; // 1e8
uint256 takeProfit; // 1e8
uint256 broker;
}
```
### **How to check a user’s position information**
```
query OrderAndTradeHistorys {
orderAndTradeHistories(
skip: 0
first: 1000
orderBy: timestamp
orderDirection: desc
where: { user: "0x04e5fe43af1306e5fc2d4b0f9daa04d3a587b28f" }
) {
id
orderOrTradeHash
actionType
timestamp
marginIncrement
txHash
limitOrder {
id
pair {
name
}
isLong
token {
symbol
}
amountIn
limitPrice
qty
takeProfit
stopLoss
}
trade {
id
pair {
name
}
isLong
token {
symbol
}
margin
entryPrice
qty
openFee
executionFee
closeType
closePrice
closeFee
fundingFee
holdingFee
pnl
actualPnl
broker {
name
}
}
user {
id
}
}
}
```
### **How to check an open order**
* **Contract address**: 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
* **Method**: getLimitOrders
Parameters:
* **User**: address
* **Pairs**: 0x0000000000000000000000000000000000000000
**Response**:
```
struct Position {
```
### **How to close a position**
**Contract address**: 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
**Method**: closeTrade
**Parameters**:
```
bytes32 tradeHash
```
### **How to add margin**
* Contract address: 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
* Method: addMargin
**Parameters**:
```
bytes32 tradeHash；
unit256 amount； // 1e10
```
### **How to adjust Take Profit and Stop Loss price**
* **Contract address**: 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
* **Method**: updateTradeTpAndSl
**Parameters**:
```
bytes32 tradeHash；
unit256 stopLossPrice； // 1e8
unit256 takeProfitPrice； // 1e8
```
### **How to cancel the Limit order**
* **Contract address**: 0x1b6f2d3844c6ae7d56ceb3c3643b9060ba28feb0
* **Method**: cancelLimitOrder
**Parameters**:
```
bytes32 tradeHash
```
\
**Margin amount decimals**:
* USDT: 1e18
* USDC: 1e18
* Price decimal: 1e8
* Contract qty decimal: 1e10
### **Resources**
* ABI:
{% file src="" %}
* The Ethereum Diamond Inspector:
* Index price API: [https://www.apollox.finance/fapi/v1/premiumIndex
](https://www.apollox.finance/fapi/v1/premiumIndex)