DSL Strategy Order

DSL (Domain Specific Language) Conditional Order is an advanced trading feature provided by Deepcoin, allowing users to define complex market-triggered logic via JSON, which is then executed automatically by the system.

1. API Information

Endpoint Name: DSL Strategy Order (DSL Trigger Order)
Request Method: POST
Request URL: /deepcoin/trade/dsl-trigger-order
Content-Type: application/json

2. Overall Request Architecture

The request body consists of two core objects: account/trade configuration (trade_info) and strategy logic definition (dsl_json):

{
  "trade_info": { ... }, // Defines: Where to place the order? What leverage to use? Which margin mode?
  "dsl_json": { ... }    // Defines: When to place the order? How much to buy? How to set take-profit/stop-loss?
}

3. Detailed Parameter Definitions

3.1 Account & Trading Layer (trade_info)

Parameter	Required	Type	Description
`symbol`	Yes	String	Trading pair identifier (e.g., `BTC-USDT-SWAP`)
`tradeMode`	Yes	String	Margin Mode: `isolated`, `cross`
`mrgPosition`	No	String	Position Mode: `merge` (one-way), `split` (two-way); defaults to `merge`

3.2 Strategy Logic Layer (dsl_json)

Parameter	Required	Type	Description
`version`	No	String	DSL version, e.g., "1.0"
`indicators`	Yes	Array	Array of technical indicators and their trigger conditions (see 3.2.1)
`then`	Yes	Object	Execution actions after conditions are met: open/close position (see 3.2.2)
`risk`	No	Object	Built-in take-profit/stop-loss protection: `stop_loss`, `take_profit` (see 3.2.3)

3.2.1 Technical Indicators (indicators)

The system evaluates the logic based on the conditions defined in indicators (multiple indicators default to AND logic).

Parameter	Required	Type	Description
`name`	Yes	String	Unique identifier for the indicator (e.g., `ma5`, `boll`)
`type`	Yes	String	Indicator Type: `BOLL`, `MA`, `EMA`, `KDJ`, `RSI`, `WR`
`params`	Yes	Object	Indicator calculation parameters (see 3.2.1.1)
`condition`	Yes	Object	Trigger threshold (see 3.2.1.2)
`scope`	Yes	String	Scope of action: `entry` (for opening a position), `exit` (for closing a position)

3.2.1.1 Indicator Calculation Parameters (params)

Indicator Type	`params` Included Parameters	Notes
Common	`interval`	Required. Candlestick period: `1m`, `5m`, `15m`, `30m`, `1h`, `4h`, `1d`, `1w`
BOLL	`period`, `std`, `interval`	`std` is the standard deviation multiplier for Bollinger Bands
MA / EMA	`period`, `interval`	-
KDJ	`n`, `k_smoothing`, `d_smoothing`, `interval`	`n` is the KDJ parameter, `k_smoothing` for K smoothing, `d_smoothing` for D smoothing
RSI / WR	`period`, `interval`	-

3.2.1.2 Trigger Condition Fields & Examples (condition)

The condition object defines precise trigger logic by combining different fields.

Parameter	Required	Type	Description
`ref`	Yes	String	Indicator reference field (e.g., `boll.lower`)
`op`	Yes	String	Comparison operator (`<`, `>`)
`right`	No	Number	Comparison value (required for KDJ, RSI, WR indicators)
`diff_price`	No	Number	Price difference between the current price and the indicator value

Scenario	`condition` Example	Business Meaning
Indicator vs. Price Comparison (`boll` supports only market price comparison when `right` is omitted)	`{"ref": "boll.lower", "op": "<"}`	The current market price is higher than the Bollinger Bands lower band.
Indicator vs. Fixed Value Comparison (using `right`)	`{"ref": "kdj.k", "op": ">", "right": 80}`	The KDJ indicator's K value is greater than 80.
Indicator vs. Price Difference Comparison (using `diff_price`)	`{"ref": "ma", "op": ">", "diff_price": 100}`	The MA line value is 100 points higher than the current price.

3.2.2 Execution Actions (then)

Contains entry (for opening) or exit (for closing) logic blocks.

Action Branch (on_true):

Parameter	Required	Type	Description
`action`	No	String	Action: `open`, `close`
`side`	No	String	Direction: `long`, `short`
`volume`	Yes	Number	Order quantity in contracts

3.2.3 Risk Control (risk)

Parameter	Required	Type	Description
`stop_loss`	No	Object	Stop-loss configuration. `{"value": 0.1}` means 10%
`take_profit`	No	Object	Take-profit configuration. `{"value": 0.2}` means 20%

4. Response Parameters

Field	Type	Description
`sCode`	Integer	Business status code. `0`: success; others: failure
`sMsg`	String	Error or prompt message

5. Typical Application Examples

5.1 Combined Indicators (BOLL + KDJ) Entry

When the price breaks below the Bollinger lower band and the KDJ K-value is below 30, open a long position of 100 contracts.

{
  "trade_info": {"symbol": "BTC-USDT-SWAP","tradeMode": "cross","mrgPosition": "merge"}, // cross-margin, one-way mode
  "dsl_json": {
    "indicators": [
      {
        "name": "boll",
        "type": "BOLL",
        "params": { "period": 20, "std": 2, "interval": "1m" },  // 20-period Bollinger Bands, 2x std dev, 1-min chart
        "condition": { "ref": "boll.lower", "op": ">" },  // Current price breaks below the Bollinger lower band
        "scope": "entry"
      },
      {
        "name": "kdj",
        "type": "KDJ",
        "params": { "n": 9, "k_smoothing": 3, "d_smoothing": 3, "interval": "1m" },  // 9-period KDJ, 3-smoothing for K, 3-smoothing for D, 1-min chart
        "condition": { "ref": "kdj.k", "op": "<", "right": 30 },  // KDJ K-value is below 30
        "scope": "entry"
      }
    ],
    "then": {
      "entry": {
        "on_true": { "action": "open", "side": "long", "volume": 100 }  // Open a long position of 100 contracts
      }
    }
  }
}

5.2 Entry + Exit + Full Risk Control

When the current price is above MA5, open a long position of 50 contracts. When the current price is below MA20, close the long position of 50 contracts.

{
  "trade_info": { "symbol": "ETH-USDT-SWAP", "tradeMode":"isolated" },  // isolated margin mode
  "dsl_json": {
    "indicators": [
      { "name": "ma5", 
        "type": "MA", 
        "params": { "period": 5, "interval": "1h" }, // 5-period MA, 1-hour chart
        "condition": { "ref": "ma", "op": "<" }, // Current price is above MA5
        "scope": "entry" }, 
      { "name": "ma20", 
        "type": "MA", 
        "params": { "period": 20, "interval": "1h" }, // 20-period MA, 1-hour chart
        "condition": { "ref": "ma", "op": ">" }, // Current price is below MA20
        "scope": "exit" } 
    ],
    "then": {
      "entry": { "on_true": { "action": "open", "side": "long", "volume": 50 } },  // Open a long position of 50 contracts
      "exit": { "on_true": { "action": "close", "side": "long", "volume": 50 } }  // Close a long position of 50 contracts
    },
    "risk": {
      "stop_loss": { "value": 0.05 },  // 5% stop-loss
      "take_profit": { "value": 0.15 }  // 15% take-profit
    }
  }
}

6. Usage Notes

Indicator Logic: All indicators with scope: "entry" must be met simultaneously (AND logic) to trigger the then.entry action.
Exit Logic: Similarly, all indicators with scope: "exit" must be met to trigger the then.exit action.
Backtesting Support: The API currently only supports on_true for live trading.

1. API Information​

2. Overall Request Architecture​

3. Detailed Parameter Definitions​

3.1 Account & Trading Layer (trade_info)​

3.2 Strategy Logic Layer (dsl_json)​

3.2.1 Technical Indicators (indicators)​

3.2.1.1 Indicator Calculation Parameters (params)​

3.2.1.2 Trigger Condition Fields & Examples (condition)​

3.2.2 Execution Actions (then)​

3.2.3 Risk Control (risk)​

4. Response Parameters​

5. Typical Application Examples​

5.1 Combined Indicators (BOLL + KDJ) Entry​

5.2 Entry + Exit + Full Risk Control​

6. Usage Notes​