Kana Perps Python REST API

1. Get Market Info

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getMarketInfo

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market you want information about.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getMarketInfo?marketId=501

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Market information fetched successfully",
  "data": [
    {
      "__variant__": "V1",
      "base_decimals": 8,
      "base_name": "APT/USDC",
      "counter": "17",
      "creator": "0xb61d7b57333abf8ac036e752f19d0ba0c4baa5404db1cbf868c57dac3628f2bf",
      "lot_size": "100000",
      "maintenance_margin": "250",
      "market_address": "0xfd8d58fdd05dd9d0442a9d555a4f8ed310112eb7d1c297307038a650136e207b",
      "market_id": "501",
      "max_leverage": "20",
      "max_lots": "150000000",
      "min_lots": "500",
      "quote_decimals": 6,
      "quote_precision": 3,
      "tick_size": "1"
    }
  ]
}

Example Code to Fetch Market Information:

The following Python script demonstrates how to call the Get Market Info API using the requests library.

import requests
import os
from dotenv import load_dotenv
load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getMarketInfo'
        params = {
            'marketId': 501
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_market_info = response.json()
        print("getMarketInfo: ", get_market_info)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

2. Get Wallet Account Balance

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getWalletAccountBalance

• Method: GET

• Query Parameters:

  • userAddress (Required) - The wallet address for which the account balance is being fetched.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getWalletAccountBalance?userAddress=0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched wallet account balance successfully",
  "data": "16391.60"
}

Example Code to Fetch Wallet Account Balance Information:

The following Python script demonstrates how to call the Get Wallet Account Balance API using the requests library.

import os
import requests
from dotenv import load_dotenv
load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getWalletAccountBalance'
        params = {
            'userAddress': '0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770'
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_wallet_account_balance = response.json()
        print("getWalletAccountBalance: ", get_wallet_account_balance)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

3. Get Profile Balance Snapshot

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getProfileBalanceSnpashot

• Method: GET

• Query Parameters:

  • userAddress (Required) - The wallet address for which the account balance is being fetched.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getProfileBalanceSnpashot?userAddress=0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Profile balance snapshot fetched successfully",
  "data": "44.321972"
}

Example Code to Fetch Trading Account Balance Information:

The following Python script demonstrates how to call the Get Trading Account Balance API using the requests library.

import os
import requests
from dotenv import load_dotenv
load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getProfileBalanceSnpashot'
        params = {
            'userAddress': '0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770'
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_trading_account_balance = response.json()
        print("getTradingAccountBalance: ", get_trading_account_balance)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

4. Deposit

• Endpoint URL: https://perps-tradeapi.kanalabs.io/deposit

• Method: GET

• Query Parameters:

  • amount (Required) - The amount of the quote coin to deposit.

  • userAddress (Required) - The address of the user making the deposit.

Example Request:

GET https://perps-tradeapi.kanalabs.io/deposit?userAddress=0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770&amount=50000000

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Deposit payload has been built successfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::deposit",
    "functionArguments": [
      "0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770",
      50000000
    ],
    "typeArguments": []
  }
}

Example Code to Depsoit a quote coin:

The following Python script demonstrates how to call the Get Deposit API using the requests library.

import asyncio
import os
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.account_address import AccountAddress  # Import this
from aptos_sdk.type_tag import TypeTag, StructTag
import requests
from dotenv import load_dotenv
from typing import Any, List
load_dotenv()

class AptosTransactionHandler:
    
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url, params, headers):
        try:
            response = requests.get(api_url, params=params, headers=headers)
            response.raise_for_status()
            return response.json().get("data")
        except requests.exceptions.RequestException as e:
            print(f"Error fetching payload: {e}")
            return None

    def create_transaction_function_arguments(self, arguments: List[Any], types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        
        return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            function_information = payload["function"].split("::")
            module = "::".join(function_information[:-1])
            function_id = function_information[-1]
            function_arguments = self.create_transaction_function_arguments(
                payload["functionArguments"],
                payload["argumentTypes"]
            )
            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]
            entry_function = EntryFunction.natural(
                module=module,
                function=function_id,
                ty_args=type_arguments,
                args=function_arguments,
            )
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction_request = await self.rest_client.create_bcs_signed_transaction(
                sender=self.account, payload=transaction_payload
            )
            txn_hash = await self.rest_client.submit_bcs_transaction(
                signed_transaction=signed_transaction_request
            )
            await self.rest_client.wait_for_transaction(txn_hash=txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    rest_client = RestClient(NODE_URL)
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')
    if private_key_hex.startswith("0x"):
        private_key_hex = private_key_hex[2:]
    private_key_bytes = bytes.fromhex(private_key_hex)
    account = Account.load_key(private_key_bytes)
    API_URL = "https://perps-tradeapi.kanalabs.io/deposit"
    PARAMS = {
        "userAddress":"0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770",
        "amount": 50
    }
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    handler = AptosTransactionHandler(rest_client, account)
    payload_data = handler.fetch_payload(API_URL, PARAMS, HEADERS)
    
    if not payload_data:
        print("Failed to fetch payload data.")
        return
    
    try:
        payload_data["functionArguments"] = [
            AccountAddress.from_str(payload_data["functionArguments"][0]),  
            int(payload_data["functionArguments"][1]),
        ]
        payload_data["argumentTypes"] = [Serializer.struct, Serializer.u64]
        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Transaction hash: {txn_hash}")
        
    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())

5. Withdraw Specific Market

• Endpoint URL: https://perps-tradeapi.kanalabs.io/withdrawSpecifiMarket

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market you want to withdraw.

  • amount (Required) - The amount of the quote coin to withdraw.

  • userAddress (Required) - The address of the user making the withdraw.

Example Request:

GET https://perps-tradeapi.kanalabs.io/withdrawSpecifiMarket?marketId=501&userAddress=0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770&amount=50

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Withdraw specific market payload has been built successfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::withdraw_specific_market",
    "functionArguments": [
      "0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770",
      "501",
      50000000
    ],
    "typeArguments": []
  }
}

Example Code to Withdraw a quote coin:

The following Python script demonstrates how to call the Get Withdraw API using the requests library.

import asyncio
import os
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.account_address import AccountAddress  # Import this
from aptos_sdk.type_tag import TypeTag, StructTag
import requests
from dotenv import load_dotenv
from typing import Any, List
load_dotenv()

class AptosTransactionHandler:
    
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url, params, headers):
        try:
            response = requests.get(api_url, params=params, headers=headers)
            response.raise_for_status()
            return response.json().get("data")
        except requests.exceptions.RequestException as e:
            print(f"Error fetching payload: {e}")
            return None

    def create_transaction_function_arguments(self, arguments: List[Any], types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        
        return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            function_information = payload["function"].split("::")
            module = "::".join(function_information[:-1])
            function_id = function_information[-1]
            function_arguments = self.create_transaction_function_arguments(
                payload["functionArguments"],
                payload["argumentTypes"]
            )
            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]
            entry_function = EntryFunction.natural(
                module=module,
                function=function_id,
                ty_args=type_arguments,
                args=function_arguments,
            )
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction_request = await self.rest_client.create_bcs_signed_transaction(
                sender=self.account, payload=transaction_payload
            )
            txn_hash = await self.rest_client.submit_bcs_transaction(
                signed_transaction=signed_transaction_request
            )
            await self.rest_client.wait_for_transaction(txn_hash=txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    rest_client = RestClient(NODE_URL)
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')
    if private_key_hex.startswith("0x"):
        private_key_hex = private_key_hex[2:]
    private_key_bytes = bytes.fromhex(private_key_hex)
    account = Account.load_key(private_key_bytes)
    API_URL = "https://perps-tradeapi.kanalabs.io/withdrawSpecifiMarket"
    PARAMS = {
        "userAddress": "0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770",
        "marketId": 501,
        "amount": 50
    }
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    handler = AptosTransactionHandler(rest_client, account)
    payload_data = handler.fetch_payload(API_URL, PARAMS, HEADERS)
    
    if not payload_data:
        print("Failed to fetch payload data.")
        return
    
    try:
        payload_data["functionArguments"] = [
            AccountAddress.from_str(payload_data["functionArguments"][0]),  
            int(payload_data["functionArguments"][1]),
            int(payload_data["functionArguments"][1]),
        ]
        payload_data["argumentTypes"] = [Serializer.struct, Serializer.u64, Serializer.u64]
        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Transaction hash: {txn_hash}")
        
    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())

6. Place Limit Order

• Endpoint URL: https://perps-tradeapi.kanalabs.io/placeLimitOrder

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market where the limit order will be placed.

  • tradeSide (Required) - Indicates the trade side:

    • true for the long side.

    • false for the short side.

  • direction (Required) - Indicates the direction of the trade:

    • false to open a position.

    • true to close a position.

  • size (Required) - The size of the order.

  • price (Required) - The price at which the order is to be placed.

  • leverage (Required) - The leverage to be used for the order.

  • restriction - Specifies the type of order restriction. It is an optional parameter with a default value of 0. Possible values are:

    • 0 - NO_RESTRICTION: Optionally fill as a taker, then post to the book as a maker.

    • 1 - FILL_OR_ABORT: Abort if any size posts as a maker (only fill).

    • 3 - POST_OR_ABORT: Abort if any size fills as a taker (only post).

    • If restriction is not provided, it defaults to 0. It can either be a number or left undefined.

  • takeProfit - The take profit value is optional. If not provided, it defaults to 0. It can either be a number or left undefined.

  • stopLoss - The stop loss value is also optional. If not provided, it defaults to 0. It can either be a number or left undefined.

Example Request:

GET https://perps-tradeapi.kanalabs.io/placeLimitOrder/?marketId=501&tradeSide=true&direction=false&size=10000&price=3000&leverage=3

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Limit Order payload has been built successfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::place_limit_order",
    "functionArguments": [
      "501",
      "true",
      "false",
      1000000,
      8000000,
      "5",
      0,
      0,
      0
    ],
    "typeArguments": []
  }
}

Example Code to Place a limit order:

The following Python script demonstrates how to call the Get Place Limit Order API using the requests library.

import asyncio
import os
import requests
from dotenv import load_dotenv
from typing import List
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.type_tag import TypeTag, StructTag

load_dotenv()

class AptosTransactionHandler:
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url, params, headers):
        try:
            response = requests.get(api_url, params=params, headers=headers)
            response.raise_for_status()
            return response.json().get("data")
        except requests.RequestException as e:
            print(f"Error fetching payload: {e}")
            return None

    def create_transaction_function_arguments(self, arguments: List, types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            module, function_id = "::".join(payload["function"].split("::")[:-1]), payload["function"].split("::")[-1]
            function_arguments = self.create_transaction_function_arguments(payload["functionArguments"], payload["argumentTypes"])
            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]
            
            entry_function = EntryFunction.natural(module=module, function=function_id, ty_args=type_arguments, args=function_arguments)
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction = await self.rest_client.create_bcs_signed_transaction(self.account, transaction_payload)
            txn_hash = await self.rest_client.submit_bcs_transaction(signed_transaction)
            await self.rest_client.wait_for_transaction(txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')

    if not private_key_hex:
        print("Error: APTOS_PRIVATEKEY is missing in .env file.")
        return

    account = Account.load_key(bytes.fromhex(private_key_hex[2:] if private_key_hex.startswith("0x") else private_key_hex))
    rest_client = RestClient(NODE_URL)

    API_URL = "https://perps-tradeapi.kanalabs.io/placeLimitOrder"
    PARAMS = {"marketId": 501, "tradeSide": True, "direction": False, "size": 2, "price": 7, "leverage": 2}
    HEADERS = {"x-api-key": os.getenv('API_KEY')}

    handler = AptosTransactionHandler(rest_client, account)
    payload_data = handler.fetch_payload(API_URL, PARAMS, HEADERS)

    if not payload_data:
        print("Failed to fetch payload data.")
        return

    try:
        payload_data["functionArguments"] = [
            int(payload_data["functionArguments"][0]),
            payload_data["functionArguments"][1].lower() == "true",
            payload_data["functionArguments"][2].lower() == "true",
            *map(int, payload_data["functionArguments"][3:])
        ]

        payload_data["argumentTypes"] = [
            Serializer.u64, Serializer.bool, Serializer.bool, Serializer.u64,
            Serializer.u64, Serializer.u64, Serializer.u8, Serializer.u64, Serializer.u64
        ]

        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Hash: {txn_hash}")

    except Exception as e:
        print(f"Transaction process error: {e}")

if __name__ == "__main__":
    asyncio.run(main())

7. Place Market Order

• Endpoint URL: https://perps-tradeapi.kanalabs.io/placeMarketOrder

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market where the limit order will be placed.

  • tradeSide (Required) - Indicates the trade side:

    • true for the long side.

    • false for the short side.

  • direction (Required) - Indicates the direction of the trade:

    • false to open a position.

    • true to close a position.

  • size (Required) - The size of the order.

  • leverage (Required) - The leverage to be used for the order.

  • takeProfit - The take profit value is optional. If not provided, it defaults to 0. It can either be a number or left undefined.

  • stopLoss - The stop loss value is also optional. If not provided, it defaults to 0. It can either be a number or left undefined.

Example Request:

GET https://perps-tradeapi.kanalabs.io/placeMarketOrder?marketId=66&tradeSide=false&direction=true&size=1000&leverage=20

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Market Order payload has been built successfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::place_market_order",
    "functionArguments": [
      "501",
      "true",
      "false",
      1000000,
      "5",
      0,
      0
    ],
    "typeArguments": []
  }
}

Example Code to Place a market order:

The following Python script demonstrates how to call the Get Place Market Order API using the requests library.

import asyncio
import os
import requests
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.type_tag import TypeTag, StructTag
from dotenv import load_dotenv
from typing import List

load_dotenv()

class AptosTransactionHandler:
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url: str, params: dict, headers: dict) -> dict | None:
        try:
            response = requests.get(api_url, params=params, headers=headers)
            response.raise_for_status()
            return response.json().get("data")
        except requests.RequestException as e:
            print(f"Error fetching payload: {e}")
            return None

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            module, function_id = "::".join(payload["function"].split("::")[:-1]), payload["function"].split("::")[-1]
            type_arguments = [TypeTag(StructTag.from_str(arg)) for arg in payload["typeArguments"]]
            function_arguments = [TransactionArgument(arg, serializer) for arg, serializer in zip(payload["functionArguments"], payload["argumentTypes"])]

            return TransactionPayload(payload=EntryFunction.natural(module, function_id, type_arguments, function_arguments))
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_txn = await self.rest_client.create_bcs_signed_transaction(sender=self.account, payload=transaction_payload)
            txn_hash = await self.rest_client.submit_bcs_transaction(signed_transaction=signed_txn)
            await self.rest_client.wait_for_transaction(txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    API_URL = "https://perps-tradeapi.kanalabs.io/placeMarketOrder"
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    PARAMS = {"marketId": 501, "tradeSide": True, "direction": False, "size": 2, "leverage": 2}

    rest_client = RestClient(NODE_URL)
    private_key = os.getenv('APTOS_PRIVATEKEY', "").lstrip("0x")
    
    if not private_key:
        print("Error: APTOS_PRIVATEKEY is missing in .env file.")
        return

    account = Account.load_key(bytes.fromhex(private_key))
    handler = AptosTransactionHandler(rest_client, account)
    
    payload_data = handler.fetch_payload(API_URL, PARAMS, HEADERS)
    if not payload_data:
        print("Failed to fetch payload data.")
        return

    try:
        payload_data["functionArguments"] = [
            int(payload_data["functionArguments"][0]),
            payload_data["functionArguments"][1].lower() == "true",
            payload_data["functionArguments"][2].lower() == "true",
            *map(int, payload_data["functionArguments"][3:])
        ]

        payload_data["argumentTypes"] = [Serializer.u64, Serializer.bool, Serializer.bool] + [Serializer.u64] * (len(payload_data["functionArguments"]) - 3)

        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")

        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Hash: {txn_hash}")

    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())

8. Cancel Multiple Orders

• Endpoint URL: htps://perps-tradeapi.kanalabs.io/cancelMultipleOrders

• Method: POST

• Request Body:

  • marketId: The ID of the market for which the orders will be canceled.

  • orderIds: A list of order IDs to cancel.

  • cancelTradeSides: The sides of the orders to cancel (true for long, false for short).

Example Request:

{
  "marketId": 501,
  "cancelOrderIds": ["1077898597726583798162207", "1077880153515406921884445"],
  "orderSides": [true, false]
}

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Cancel Multiple Orders payload has been built successfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::cancel_multiple_orders",
    "functionArguments": [
      501,
      [
        "1077898597726583798162207",
        "1077880153515406921884445"
      ],
      [
        true,
        false
      ]
    ],
    "typeArguments": []
  }
}

Example Code to Cancel multiple orders:

The following Python script demonstrates how to call the Post Cancel Multiple Orders API using the requests library.

import asyncio
import os
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.type_tag import TypeTag, StructTag
import requests
from dotenv import load_dotenv
from typing import Any, List

load_dotenv()

class AptosTransactionHandler:
    
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url, json_data, headers):
        try:
            response = requests.post(api_url, json=json_data, headers=headers)
            response.raise_for_status()
            payload_data = response.json().get("data")
            if payload_data is None:
                print("No data returned from API.")
                return {}

            # Convert order ID from float to integer
            payload_data["functionArguments"][1] = [int(x) for x in payload_data["functionArguments"][1]]

            return payload_data
        except requests.exceptions.RequestException as e:
            print(f"Error fetching payload: {e}")
            return None

    def create_transaction_function_arguments(self, arguments: List[Any], types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        
        try:
            return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]
        except Exception as e:
            print(f"Error creating transaction arguments: {e}")
            raise

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            function_information = payload["function"].split("::")
            module = "::".join(function_information[:-1])
            function_id = function_information[-1]
            function_arguments = self.create_transaction_function_arguments(
                payload["functionArguments"],
                payload["argumentTypes"]
            )
            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]
            entry_function = EntryFunction.natural(
                module=module,
                function=function_id,
                ty_args=type_arguments,
                args=function_arguments,
            )
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction_request = await self.rest_client.create_bcs_signed_transaction(
                sender=self.account, payload=transaction_payload
            )
            txn_hash = await self.rest_client.submit_bcs_transaction(
                signed_transaction=signed_transaction_request
            )
            await self.rest_client.wait_for_transaction(txn_hash=txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    rest_client = RestClient(NODE_URL)
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')
    if private_key_hex.startswith("0x"):
        private_key_hex = private_key_hex[2:]
    private_key_bytes = bytes.fromhex(private_key_hex)
    account = Account.load_key(private_key_bytes)
    
    API_URL = "https://perps-tradeapi.kanalabs.io/cancelMultipleOrders"
    BODY = {
        "marketId": 501,
        "cancelOrderIds": ["85722020555623231393816"], # pls ensure cancelOrderIds given in string
        "orderSides": [True]
    }
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    handler = AptosTransactionHandler(rest_client, account)
    payload_data = handler.fetch_payload(API_URL, BODY, HEADERS)
    if not payload_data:
        print("Failed to fetch payload data.")
        return
    
    try:
        payload_data["argumentTypes"] = [
            Serializer.u64,
            Serializer.sequence_serializer(Serializer.u128),
            Serializer.sequence_serializer(Serializer.bool)
        ]
        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Transaction hash: {txn_hash}")
        
    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())

8. Place Multiple Orders

• Endpoint URL: https://perps-tradeapi.kanalabs.io/placeMultipleOrders

• Method: POST

Request Body :

• marketId (Required) - The ID of the market where the orders will be placed.

• orderTypes (Required) - An array of order types for each order:

  • true for limit orders.

  • false for market orders.

• tradeSides (Required) - An array indicating the trade sides for each order:

  • true for long positions.

  • false for short positions.

• directions (Required) - An array indicating the direction of each trade:

  • false to open a position.

  • true to close a position.

• sizes (Required) - An array of sizes for each order.

• leverages (Required) - An array of leverages for each order.

• prices (Required) - An array of prices at which each order is to be placed.

• restriction - Specifies the type of order restriction. It is an optional parameter with a default value of 0. Possible values are:

  • 0 - NO_RESTRICTION: Optionally fill as a taker, then post to the book as a maker.

  • 1 - FILL_OR_ABORT: Abort if any size posts as a maker (only fill).

  • 3 - POST_OR_ABORT: Abort if any size fills as a taker (only post).

  • If restriction is not provided, it defaults to 0. It can either be a number or left undefined.

• takeProfits - The take profit value is optional. If not provided, it defaults to 0. It can either be a number or left undefined.

• stopLosses - The stop loss value is also optional. If not provided, it defaults to 0. It can either be a number or left undefined.

Example Request:

{
  "marketId": 501,
  "orderTypes": [true, true],
  "tradeSides": [true, true],
  "directions": [true, true],
  "sizes": [1000, 1000],
  "prices": [1000, 1000],
  "leverages": [2, 2]
}

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Multiple Orders payload has been built successfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::place_multiple_orders",
    "functionArguments": [
      501,
      [
        true,
        true
      ],
      [
        true,
        true
      ],
      [
        true,
        true
      ],
      [
        1000,
        1000
      ],
      [
        4670,
        6780
      ],
      [
        2,
        2
      ],
      [
        0,
        0
      ],
      [
        4600
      ],
      [
        0,
        0
      ]
    ],
    "typeArguments": []
  }
}

Example Code to Place a multiple orders:

The following Python script demonstrates how to call the Get Place Multiple Orders API using the requests library.

import asyncio
import os
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.type_tag import TypeTag, StructTag
import requests
from dotenv import load_dotenv
from typing import Any, List

load_dotenv()

class AptosTransactionHandler:
    
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url: str, json_data: dict, headers: dict) -> dict:
     try:
        response = requests.post(api_url, json=json_data, headers=headers)
        response.raise_for_status()
        payload_data = response.json().get("data")
        if payload_data is None:
            print("No data returned from API.")
            return {}
        # Dynamically ensure the length matches the sizes provided
        payload_data["takeProfits"] = payload_data.get("takeProfits", [0] * len(json_data["sizes"]))
        payload_data["stopLosses"] = payload_data.get("stopLosses", [0] * len(json_data["sizes"]))
        payload_data["restrictions"] = payload_data.get("restrictions", [0] * len(json_data["sizes"]))
        return payload_data
     except requests.exceptions.RequestException as e:
        print(f"Error fetching payload: {e}")
        return {}

    def create_transaction_function_arguments(self, arguments: List[Any], types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        
        try:
            return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]
        except Exception as e:
            print(f"Error creating transaction arguments: {e}")
            raise

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            function_information = payload["function"].split("::")
            module = "::".join(function_information[:-1])
            function_id = function_information[-1]
            function_arguments = self.create_transaction_function_arguments(
                payload["functionArguments"],
                payload["argumentTypes"]
            )
            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]
            entry_function = EntryFunction.natural(
                module=module,
                function=function_id,
                ty_args=type_arguments,
                args=function_arguments,
            )
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction_request = await self.rest_client.create_bcs_signed_transaction(
                sender=self.account, payload=transaction_payload
            )
            txn_hash = await self.rest_client.submit_bcs_transaction(
                signed_transaction=signed_transaction_request
            )
            await self.rest_client.wait_for_transaction(txn_hash=txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    rest_client = RestClient(NODE_URL)
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')
    if private_key_hex.startswith("0x"):
        private_key_hex = private_key_hex[2:]
    private_key_bytes = bytes.fromhex(private_key_hex)
    account = Account.load_key(private_key_bytes)
    API_URL = "https://perps-tradeapi.kanalabs.io/placeMultipleOrders"
    BODY = {
        "marketId": 501,
        "orderTypes": [True],
        "tradeSides": [True],
        "directions": [False],
        "sizes": [1.9],
        "prices": [4.12],
        "leverages": [2]
    }
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    handler = AptosTransactionHandler(rest_client, account)
    payload_data = handler.fetch_payload(API_URL, BODY, HEADERS)
    if not payload_data:
        print("Failed to fetch payload data.")
        return
    
    try:
        payload_data["argumentTypes"] = [
            Serializer.u64,
            Serializer.sequence_serializer(Serializer.bool),
            Serializer.sequence_serializer(Serializer.bool),
            Serializer.sequence_serializer(Serializer.bool),
            Serializer.sequence_serializer(Serializer.u64),
            Serializer.sequence_serializer(Serializer.u64),
            Serializer.sequence_serializer(Serializer.u64),
            Serializer.sequence_serializer(Serializer.u8),
            Serializer.sequence_serializer(Serializer.u64),
            Serializer.sequence_serializer(Serializer.u64)
        ]
        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Transaction hash: {txn_hash}")
        
    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())

9. Cancel and Place Multiple Orders

• Endpoint URL: https://perps-tradeapi.kanalabs.io/cancelAndPlaceMultipleOrders

• Method: POST

Request Body :

• marketId (Required) - The ID of the market where the orders will be placed.

• cancelOrderIds (Required) - An array of strings representing the IDs of the orders to be canceled.

• orderSides (Required) - An array indicating the sides of the orders being canceled:

  • true for long sides.

  • false for short sides.

• orderTypes (Required) - An array of order types for each order:

  • true for limit orders.

  • false for market orders.

• tradeSides (Required) - An array indicating the trade sides for each order:

  • true for long positions.

  • false for short positions.

• directions (Required) - An array indicating the direction of each trade:

  • false to open a position.

  • true to close a position.

• sizes (Required) - An array of sizes for each order.

• leverages (Required) - An array of leverages for each order.

• prices (Required) - An array of prices at which each order is to be placed.

• restriction - Specifies the type of order restriction. It is an optional parameter with a default value of 0. Possible values are:

  • 0 - NO_RESTRICTION: Optionally fill as a taker, then post to the book as a maker.

  • 1 - FILL_OR_ABORT: Abort if any size posts as a maker (only fill).

  • 3 - POST_OR_ABORT: Abort if any size fills as a taker (only post).

  • If restriction is not provided, it defaults to 0. It can either be a number or left undefined

• takeProfits - The take profit value is optional. If not provided, it defaults to 0. It can either be a number or left undefined.

• stopLosses - The stop loss value is also optional. If not provided, it defaults to 0. It can either be a number or left undefined.

Example Request:

{
  "marketId": 501,
  "cancelOrderIds": ["23434565434567", "454345665456"],
  "orderSides": [true, true],
  "orderTypes": [true, true],
  "tradeSides": [true, false],
  "directions": [true, true],
  "sizes": [1000, 2000],
  "prices": [5000, 6000],
  "leverages": [2, 2]
}

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Cancel and place multiple Orders payload has been built successfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::cancel_and_place_multiple_orders",
    "functionArguments": [
      501,
      [
        "23434565434567",
        "454345665456"
      ],
      [
        "true",
        "true"
      ],
      [
        true,
        true
      ],
      [
        true,
        false
      ],
      [
        true,
        true
      ],
      [
        1000,
        2000
      ],
      [
        5000,
        6000
      ],
      [
        2,
        2
      ],
      [
        0,
        0
      ],
      [
        0,
        0
      ],
      [
        0,
        0
      ]
    ],
    "typeArguments": []
  }
}

Example Code to cancel and Place a multiple orders:

The following TypeScript/Node.js script demonstrates how to call the Get Cancel And Place Multiple Orders API using the axios library.

import asyncio
import os
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.type_tag import TypeTag, StructTag
import requests
from dotenv import load_dotenv
from typing import Any, List

load_dotenv()

class AptosTransactionHandler:
    
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url: str, json_data: dict, headers: dict) -> dict:
        try:
            response = requests.post(api_url, json=json_data, headers=headers)
            response.raise_for_status()
            payload_data = response.json().get("data")
            if payload_data is None:
                print("No data returned from API.")
                return {}

            # Ensure correct integer representation for order IDs
            payload_data["takeProfits"] = payload_data.get("takeProfits", [0] * len(json_data["sizes"]))
            payload_data["stopLosses"] = payload_data.get("stopLosses", [0] * len(json_data["sizes"]))
            payload_data["restrictions"] = payload_data.get("restrictions", [0] * len(json_data["sizes"]))

            # Convert order ID lists from float to integer
            payload_data["functionArguments"][1] = [int(x) for x in payload_data["functionArguments"][1]]

            return payload_data
        except requests.exceptions.RequestException as e:
            print(f"Error fetching payload: {e}")
            return {}

    def create_transaction_function_arguments(self, arguments: List[Any], types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        
        try:
            return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]
        except Exception as e:
            print(f"Error creating transaction arguments: {e}")
            raise

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            function_information = payload["function"].split("::")
            module = "::".join(function_information[:-1])
            function_id = function_information[-1]

            if "argumentTypes" not in payload:
                raise KeyError("'argumentTypes' missing in payload.")

            function_arguments = self.create_transaction_function_arguments(
                payload["functionArguments"],
                payload["argumentTypes"]
            )

            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]

            entry_function = EntryFunction.natural(
                module=module,
                function=function_id,
                ty_args=type_arguments,
                args=function_arguments,
            )
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction_request = await self.rest_client.create_bcs_signed_transaction(
                sender=self.account, payload=transaction_payload
            )
            txn_hash = await self.rest_client.submit_bcs_transaction(
                signed_transaction=signed_transaction_request
            )
            await self.rest_client.wait_for_transaction(txn_hash=txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    rest_client = RestClient(NODE_URL)
    
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')
    if private_key_hex.startswith("0x"):
        private_key_hex = private_key_hex[2:]
    
    private_key_bytes = bytes.fromhex(private_key_hex)
    account = Account.load_key(private_key_bytes)

    API_URL = "https://perps-tradeapi.kanalabs.io/cancelAndPlaceMultipleOrders"
    BODY = {
        "marketId": 501,
        "cancelOrderIds": ["45877054622524009092208"],  # Ensure orderId given as string
        "orderSides": [True],
        "orderTypes": [True],
        "tradeSides": [True],
        "directions": [False],
        "sizes": [1.8],
        "prices": [7.6868],
        "leverages": [2]
    }
    
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    handler = AptosTransactionHandler(rest_client, account)
    
    payload_data = handler.fetch_payload(API_URL, BODY, HEADERS)
    print("Before payload:", payload_data)

    if not payload_data:
        print("Failed to fetch payload data.")
        return

    # Ensure argumentTypes is included in payload_data
    payload_data["argumentTypes"] = [
        Serializer.u64,  # marketId
        Serializer.sequence_serializer(Serializer.u128),
        Serializer.sequence_serializer(Serializer.bool),
        Serializer.sequence_serializer(Serializer.bool),  # orderTypes
        Serializer.sequence_serializer(Serializer.bool),  # tradeSides
        Serializer.sequence_serializer(Serializer.bool),  # directions
        Serializer.sequence_serializer(Serializer.u64),  # sizes
        Serializer.sequence_serializer(Serializer.u64),  # prices
        Serializer.sequence_serializer(Serializer.u64),  # leverages
        Serializer.sequence_serializer(Serializer.u8),  # restrictions
        Serializer.sequence_serializer(Serializer.u64),  # takeProfits
        Serializer.sequence_serializer(Serializer.u64),  # stopLosses
    ]

    try:
        print("After payload:", payload_data)
        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Transaction hash: {txn_hash}")
    
    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())

10. Get Open Orders

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getOpenOrders

• Method: GET

• Query Parameters:

  • userAddress (Required) - The wallet address to retrieve open orders for.

  • marketId - The ID of the market to filter open orders. // Optional

Note : order_type Explanation:

OPEN_LONG (1): Opens a new long position.
OPEN_SHORT (2): Opens a new short position.
INCREASE_LONG (3): Increases the size of an existing long position.
INCREASE_SHORT (4): Increases the size of an existing short position.
DECREASE_LONG (5): Reduces the size of an existing long position.
DECREASE_SHORT (6): Reduces the size of an existing short position.
CLOSE_LONG (7): Closes an existing long position.
CLOSE_SHORT (8): Closes an existing short position.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getOpenOrders?userAddress=0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770&marketId=66

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched open orders successfully",
  "data": [
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 3,
      "timestamp": "1741444213",
      "price": "7",
      "total_size": "2",
      "remaining_size": "2",
      "order_value": "14",
      "order_id": "645636324063400958808",
      "trade_id": "295147905179352826357",
      "last_updated": "1741444214"
    },
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 3,
      "timestamp": "1741445758",
      "price": "7",
      "total_size": "2",
      "remaining_size": "2",
      "order_value": "14",
      "order_id": "682529812245179800408",
      "trade_id": "295147905179352826357",
      "last_updated": "1741445758"
    },
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 3,
      "timestamp": "1741446786",
      "price": "7",
      "total_size": "2",
      "remaining_size": "2",
      "order_value": "14",
      "order_id": "700976556301709482840",
      "trade_id": "295147905179352826357",
      "last_updated": "1741446786"
    },
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 3,
      "timestamp": "1741446907",
      "price": "7",
      "total_size": "2",
      "remaining_size": "2",
      "order_value": "14",
      "order_id": "719423300401188838232",
      "trade_id": "295147905179352826357",
      "last_updated": "1741446908"
    },
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 3,
      "timestamp": "1741447619",
      "price": "0.007",
      "total_size": "1",
      "remaining_size": "1",
      "order_value": "0.007",
      "order_id": "737869903703050289159",
      "trade_id": "295147905179352826357",
      "last_updated": "1741447620"
    },
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 3,
      "timestamp": "1741447815",
      "price": "0.007",
      "total_size": "1",
      "remaining_size": "1",
      "order_value": "0.007",
      "order_id": "756316647793939709959",
      "trade_id": "295147905179352826357",
      "last_updated": "1741447815"
    }
  ]
}

Example Code to Fetch Open Orders:

The following Python script demonstrates how to call the Get Open Orders API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getOpenOrders'
        params = {
            'marketId': 501,
            'userAddress': "0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770"
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_open_orders = response.json()
        print("getOpenOrders: ", get_open_orders)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

11. Get Order History

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getOrderHistory

• Method: GET

• Query Parameters:

  • userAddress (Required) - The wallet address to retrieve the order history for.

  • marketId (optional) - The ID of the market to filter the order history.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getOrderHistory?userAddress=0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770&marketId=66

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched order history successfully",
  "data": [
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 1,
      "timestamp": "1741167151",
      "is_market_order": false,
      "size": "1.50",
      "price": "4.678",
      "order_value": "7.01700",
      "status": "Open",
      "order_id": "18446884819787846214",
      "trade_id": "18446744073709552117",
      "last_updated": "1741262093"
    },
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 1,
      "timestamp": "1741236277",
      "is_market_order": false,
      "size": "1.50",
      "price": "4.678",
      "order_value": "7.01700",
      "status": "Cancelled",
      "order_id": "18446884819787846214",
      "trade_id": "18446744073709552117",
      "last_updated": "1741262168"
    },
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "order_type": 1,
      "timestamp": "1741236468",
      "is_market_order": false,
      "size": "1.50",
      "price": "4.50",
      "order_value": "6.7500",
      "status": "Open",
      "order_id": "36893628893497397652",
      "trade_id": "36893488147419103733",
      "last_updated": "1741262168"
    }
  }
]

Example Code to Fetch Order History:

The following Python script demonstrates how to call the Get Order History API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getOrderHistory'
        params = {
            'marketId': 501,
            'userAddress': "0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770"
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_order_history = response.json()
        print("getOrderHistory: ", get_order_history)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

12. Get Positions

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getPositions

• Method: GET

• Query Parameters:

  • userAddress (Required) - The wallet address of the user to view positions for.

  • marketId (optional) - The ID of the market to filter the positions.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getPositions?marketId=66&userAddress=0x2eda5777ed2bf68cbcc67359dd00ae5fa73b1d5fa160b7c3aeb42d748d485387

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched positions successfully",
  "data": [
    {
      "address": "0x3c78886aa67752706b3502b12959edf92e68d85ae64b24226783d26ce6efc1e",
      "market_id": "501",
      "leverage": 2,
      "is_long": true,
      "size": "1",
      "available_order_size": "1",
      "value": "5.678",
      "entry_price": "5.678",
      "liq_price": "2.9117948717948717990163355253",
      "margin": "2.839",
      "tp": "6.012",
      "sl": null,
      "trade_id": "295147905179352826357",
      "last_updated": "1741262185"
    }
  ]
}

Example Code to Fetch Open Position:

The following Python script demonstrates how to call the Get Open Position API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getPositions'
        params = {
            'marketId': 501,
            'userAddress': "0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770"
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_open_position = response.json()
        print("getOpenPosition: ", get_open_position)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

12. Get All Trades

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getAllTrades

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market to retrieve all trades information.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getAllTrades?marketId=66

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Recent trades fetched successfully",
  "data": [
    {
      "txn_version": 6297687196,
      "event_idx": 5,
      "emit_address": "0x2eda5777ed2bf68cbcc67359dd00ae5fa73b1d5fa160b7c3aeb42d748d485387",
      "time": "2024-11-20T20:33:38.600241+00:00",
      "maker_address": "0x2eda5777ed2bf68cbcc67359dd00ae5fa73b1d5fa160b7c3aeb42d748d485387",
      "maker_custodian_id": 28,
      "maker_order_id": "15951655917465922493754983",
      "maker_side": true,
      "market_id": 66,
      "price": 11879,
      "sequence_number_for_trade": 0,
      "size": 10000,
      "taker_address": "0x13eb7ea6b62c6cd791b5c4e0e2ef1dfbe59d1cf4823929343a273274c288bc8a",
      "taker_custodian_id": 28,
      "taker_order_id": "15951748150764039921729536",
      "taker_quote_fees_paid": 59395
    },
    {
      "txn_version": 6297687196,
      "event_idx": 4,
      "emit_address": "0x13eb7ea6b62c6cd791b5c4e0e2ef1dfbe59d1cf4823929343a273274c288bc8a",
      "time": "2024-11-20T20:33:38.600241+00:00",
      "maker_address": "0x2eda5777ed2bf68cbcc67359dd00ae5fa73b1d5fa160b7c3aeb42d748d485387",
      "maker_custodian_id": 28,
      "maker_order_id": "15951655917465922493754983",
      "maker_side": true,
      "market_id": 66,
      "price": 11879,
      "sequence_number_for_trade": 0,
      "size": 10000,
      "taker_address": "0x13eb7ea6b62c6cd791b5c4e0e2ef1dfbe59d1cf4823929343a273274c288bc8a",
      "taker_custodian_id": 28,
      "taker_order_id": "15951748150764039921729536",
      "taker_quote_fees_paid": 59395
    }
  ]
}

Example Code to Fetch All trades:

The following Python script demonstrates how to call the Get Open Position API using the requests library.

import axios from "axios";

async function main(): Promise<void> {
    const baseURL = 'https://perps-tradeapi.kanalabs.io/getAllTrades';
    const params = {
        marketId: 'your_market_id'
    };
    const res = await axios.get(baseURL, {
        params, 
        headers: {
            'x-api-key': process.env.API_KEY,
        },
    });
    const getAllTrades = res.data;
    console.log("getAllTrades : ", getAllTrades);
}

main().catch(error => {
    console.error('An error occurred:', error);
});

13. Get Order Status By Order Id

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getOrderStatusByOrderId

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market associated with the order.

  • orderId (Required) - The unique identifier of the order to retrieve its status.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getOrderStatusByOrderId?marketId=66&orderId=15308325717473050761363456

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "status": true,
  "message": "Fetched order status for a given order Id successfully",
  "data": {
    "market_id": 66,
    "order_id": "15308325717473050761363456",
    "created_at": "2024-11-20T11:54:45.957059+00:00",
    "last_updated_at": "2024-11-20T11:54:45.957059+00:00",
    "integrator": "0xee820ab02631dd1a195d3c53fa64f0a8f455dbb9261388e141c3bd3bd3c08363",
    "total_filled": 1000,
    "remaining_size": 0,
    "order_status": "closed",
    "order_type": "market",
    "user": "0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770",
    "direction": "buy",
    "price": 0,
    "average_execution_price": 12813,
    "custodian_id": 28,
    "self_match_behavior": 0,
    "restriction": 0,
    "last_increase_stamp": null,
    "min_base": null,
    "max_base": null,
    "min_quote": null,
    "max_quote": null,
    "total_fees_paid_in_quote_subunits": 6406
  }
}

Example Code to Fetch Order Status B Order Id:

The following Python script demonstrates how to call the Get Order Status By Order Id API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getOrderStatusByOrderId'
        params = {
            'marketId': 501,
            'orderId': '85703575078023708283016'
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_order_status_by_order_id = response.json()
        print("getOrderStatusByOrderId: ", get_order_status_by_order_id)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

14. Get Fills

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getFills

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market for which fills are retrieved.

  • address (Optional) - The address of the user to filter fills (if applicable).

  • from (Required) - The start time of the range in ISO 8601 format (e.g., 2024-11-21T00:00:00Z).

  • to (Required) - The end time of the range in ISO 8601 format (e.g., 2024-11-21T23:59:59Z).

  • orderId (Required) - The unique identifier of the order to retrieve its status.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getFills?marketId=66&address=0x3a6b332c7889784fe57ea61f507b5056e386db8f56c6323b4d898485f468f0c2&from=2024-11-20T00:00:00Z&to=2024-11-21T23:59:59Z

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched fill trades for a given time range Successfully",
  "data": [
    {
      "txn_version": 6296434935,
      "event_idx": 1,
      "emit_address": "0x3a6b332c7889784fe57ea61f507b5056e386db8f56c6323b4d898485f468f0c2",
      "time": "2024-11-20T19:23:14.67535+00:00",
      "maker_address": "0x2eda5777ed2bf68cbcc67359dd00ae5fa73b1d5fa160b7c3aeb42d748d485387",
      "maker_custodian_id": 28,
      "maker_order_id": "15891335065048614061485282",
      "maker_side": true,
      "market_id": 66,
      "price": 11490,
      "sequence_number_for_trade": 0,
      "size": 1000,
      "taker_address": "0x3a6b332c7889784fe57ea61f507b5056e386db8f56c6323b4d898485f468f0c2",
      "taker_custodian_id": 28,
      "taker_order_id": "15891427297643009687945216",
      "taker_quote_fees_paid": 5745
    },
    {
      "txn_version": 6295302625,
      "event_idx": 4,
      "emit_address": "0x3a6b332c7889784fe57ea61f507b5056e386db8f56c6323b4d898485f468f0c2",
      "time": "2024-11-20T18:19:35.70863+00:00",
      "maker_address": "0x2eda5777ed2bf68cbcc67359dd00ae5fa73b1d5fa160b7c3aeb42d748d485387",
      "maker_custodian_id": 28,
      "maker_order_id": "15812401447297883953966476",
      "maker_side": false,
      "market_id": 66,
      "price": 11660,
      "sequence_number_for_trade": 0,
      "size": 1000,
      "taker_address": "0x3a6b332c7889784fe57ea61f507b5056e386db8f56c6323b4d898485f468f0c2",
      "taker_custodian_id": 28,
      "taker_order_id": "15812549019983827645235200",
      "taker_quote_fees_paid": 5830
    }
  ]
}

Example Code to Fetch Order Status B Order IdFills Data:

The following Python script demonstrates how to call the Get Fills Data API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getFills'
        params = {
            'marketId': 'your_market_id',
            'address': 'your_address',
            'from': 'your_from_time',
            'to': 'your_to_time'
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_fills_data = response.json()
        print("getFillsData: ", get_fills_data)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

14. Get Market Price

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getMarketPrice

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market for which the price information is being retrieved.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getMarketPrice?marketId=66

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched Market Price Successfully",
  "data": {
    "bestAskPrice": 6.400,
    "bestBidPrice": 9.880
  }
}

Example Code to Fetch Market Price:

The following Python script demonstrates how to call the Get Market Price API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getMarketPrice'
        params = {
            'marketId': 501
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_market_price = response.json()
        print("getMarketPrice: ", get_market_price)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

15. Get Last Execution Price

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getLastPlacedPrice

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market for which the last execution price information is being retrieved.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getLastPlacedPrice?marketId=66

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched last execution price Successfully",
  "data": 8.989
}

Example Code to Fetch Last Execution Price:

The following Python script demonstrates how to call the Get Last Execution Price API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getLastPlacedPrice'
        params = {
            'marketId': 501
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_last_execution_price = response.json()
        print("getLastExecutionPrice: ", get_last_execution_price)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

16. Get All Open Order Ids

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getAllOpenOrderIds

• Method: GET

• Query Parameters:

  • userAddress(Required) - The address associated with the orders.

  • marketId (optional) - The ID of the market for which open order IDs are being retrieved.

Example Request:

GET https://perps-tradeapi.kanalabs.io/getAllOpenOrderIds?marketId=66&userAddress=0x3a6b332c7889784fe57ea61f507b5056e386db8f56c6323b4d898485f468f0c2

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Open order IDs fetched successfully",
  "data": [
    "645636324063400958808",
    "682529812245179800408",
    "700976556301709482840",
    "719423300401188838232",
    "737869903703050289159",
    "756316647793939709959"
  ]
}

Example Code to Fetch Open Order Ids:

The following Python script demonstrates how to call the Get Open Order Ids API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getAllOpenOrderIds'
        params = {
            'userAddress': '0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770',
            'marketId': 501
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_open_order_ids = response.json()
        print("getOpenOrderIds: ", get_open_order_ids)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

17. Update Take Profit

• Endpoint URL: https://perps-tradeapi.kanalabs.io/updateTakeProfit

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market for which the take profit values will be updated.

  • tradeSide (Required) - The trade side:

    • true for the long side.

    • false for the short side.

  • newTakeProfitPrice (Required) - The new take profit price to be set for the trade.

Example Request:

GET https://perps-tradeapi.kanalabs.io/updateTakeProfit?marketId=66&tradeSide=true&newTakeProfitPrice=6000

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Update take profit payload built succesfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::update_take_profit",
    "functionArguments": [
      "501",
      "true",
      7590
    ],
    "typeArguments": []
  }
}

Example Code to Update take profit price:

The following Python script demonstrates how to call the Get Update Take Profit Price API using the requests library.

import asyncio
import os
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.type_tag import TypeTag, StructTag
import requests
from dotenv import load_dotenv
from typing import Any, List
load_dotenv()

class AptosTransactionHandler:
    
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url, params, headers):
        try:
            response = requests.get(api_url, params=params, headers=headers)
            response.raise_for_status()
            return response.json().get("data")
        except requests.exceptions.RequestException as e:
            print(f"Error fetching payload: {e}")
            return None

    def create_transaction_function_arguments(self, arguments: List[Any], types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        
        return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            function_information = payload["function"].split("::")
            module = "::".join(function_information[:-1])
            function_id = function_information[-1]
            function_arguments = self.create_transaction_function_arguments(
                payload["functionArguments"],
                payload["argumentTypes"]
            )
            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]
            entry_function = EntryFunction.natural(
                module=module,
                function=function_id,
                ty_args=type_arguments,
                args=function_arguments,
            )
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction_request = await self.rest_client.create_bcs_signed_transaction(
                sender=self.account, payload=transaction_payload
            )
            txn_hash = await self.rest_client.submit_bcs_transaction(
                signed_transaction=signed_transaction_request
            )
            await self.rest_client.wait_for_transaction(txn_hash=txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    rest_client = RestClient(NODE_URL)
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')
    if private_key_hex.startswith("0x"):
        private_key_hex = private_key_hex[2:]
    private_key_bytes = bytes.fromhex(private_key_hex)
    account = Account.load_key(private_key_bytes)
    API_URL = "https://perps-tradeapi.kanalabs.io/updateTakeProfit"
    PARAMS = {
        "marketId": 501,
        "tradeSide": True,
        "newTakeProfitPrice": 6.89
    }
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    handler = AptosTransactionHandler(rest_client, account)
    payload_data = handler.fetch_payload(API_URL, PARAMS, HEADERS)
    
    if not payload_data:
        print("Failed to fetch payload data.")
        return
    
    try:
        payload_data["functionArguments"] = [
            int(payload_data["functionArguments"][0]),
            payload_data["functionArguments"][1].lower() == "true",
            int(payload_data["functionArguments"][2]),
        ]
        payload_data["argumentTypes"] = [Serializer.u64, Serializer.bool, Serializer.u64]
        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Transaction hash: {txn_hash}")
        
    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())

18. Get Account Aptos Balance

• Endpoint URL: https://perps-tradeapi.kanalabs.io/getAccountAptBalance

• Method: GET

• Query Parameters:

• userAddress (Required) - The address of the account whose balance will be

Example Request:

GET https://perps-tradeapi.kanalabs.io/getAccountAptBalance?userAddress=0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Fetched Account Apt Balance Successfully",
  "data": 8.2344617
}

Example Code to Fetch Wallet Account Aptos Balance Information:

The following Python script demonstrates how to call the Get Wallet Account Aptos Balance API using the requests library.

import os
import requests
from dotenv import load_dotenv

load_dotenv()

def main():
    try:
        base_url = 'https://perps-tradeapi.kanalabs.io/getAccountAptBalance'
        params = {
            'userAddress': '0x4d6dc68e391e86991e58ab4d548b7e92872430d1f51bc666fe0c206bad7ff770'
        }
        api_key = os.getenv('API_KEY')
        headers = {
            'x-api-key': api_key
        }
        response = requests.get(base_url, params=params, headers=headers)
        response.raise_for_status()
        get_wallet_account_aptos_balance = response.json()
        print("getWalletAccountAptosBalance: ", get_wallet_account_aptos_balance)
    except requests.exceptions.RequestException as error:
        print('An error occurred:', error)

if __name__ == "__main__":
    main()

19. Update Stop Loss

• Endpoint URL: https://perps-tradeapi.kanalabs.io/updateStopLoss

• Method: GET

• Query Parameters:

  • marketId (Required) - The ID of the market for which the take profit values will be updated.

  • tradeSide (Required) - The trade side:

    • true for the long side.

    • false for the short side.

  • newStopLossPrice (Required) - The new stop loss price to be set for the trade.

Example Request:

GET https://perps-tradeapi.kanalabs.io/updateStopLoss?marketId=66&tradeSide=true&newStopLossPrice=6000

Example Response:

• Status Code: 200 OK

• Response Body:

{
  "success": true,
  "message": "Update stop loss payload built succesfully",
  "data": {
    "function": "0xabbf40e0c31cbedf182f3e6e9c3570f3f91629424723da876becb514bf5d9fc6::perpetual_scripts::update_stop_loss",
    "functionArguments": [
      "501",
      "true",
      7590
    ],
    "typeArguments": []
  }
}

Example Code to Update stop loss price:

The following Python script demonstrates how to call the Get Update Stop Loss Price API using the requests library.

import asyncio
import os
from aptos_sdk.account import Account
from aptos_sdk.async_client import RestClient
from aptos_sdk.transactions import EntryFunction, TransactionArgument, TransactionPayload
from aptos_sdk.bcs import Serializer
from aptos_sdk.type_tag import TypeTag, StructTag
import requests
from dotenv import load_dotenv
from typing import Any, List
load_dotenv()

class AptosTransactionHandler:
    
    def __init__(self, rest_client: RestClient, account: Account):
        self.rest_client = rest_client
        self.account = account

    def fetch_payload(self, api_url, params, headers):
        try:
            response = requests.get(api_url, params=params, headers=headers)
            response.raise_for_status()
            return response.json().get("data")
        except requests.exceptions.RequestException as e:
            print(f"Error fetching payload: {e}")
            return None

    def create_transaction_function_arguments(self, arguments: List[Any], types: List[Serializer]) -> List[TransactionArgument]:
        if len(arguments) != len(types):
            raise ValueError("Arguments and types length mismatch.")
        
        return [TransactionArgument(arg, serializer) for arg, serializer in zip(arguments, types)]

    def create_transaction_payload(self, payload: dict) -> TransactionPayload:
        try:
            function_information = payload["function"].split("::")
            module = "::".join(function_information[:-1])
            function_id = function_information[-1]
            function_arguments = self.create_transaction_function_arguments(
                payload["functionArguments"],
                payload["argumentTypes"]
            )
            type_arguments = [TypeTag(StructTag.from_str(argument)) for argument in payload["typeArguments"]]
            entry_function = EntryFunction.natural(
                module=module,
                function=function_id,
                ty_args=type_arguments,
                args=function_arguments,
            )
            return TransactionPayload(payload=entry_function)
        except Exception as e:
            print(f"Error creating transaction payload: {e}")
            raise

    async def submit_transaction(self, transaction_payload: TransactionPayload) -> str:
        try:
            signed_transaction_request = await self.rest_client.create_bcs_signed_transaction(
                sender=self.account, payload=transaction_payload
            )
            txn_hash = await self.rest_client.submit_bcs_transaction(
                signed_transaction=signed_transaction_request
            )
            await self.rest_client.wait_for_transaction(txn_hash=txn_hash)
            return txn_hash
        except Exception as e:
            print(f"Error during transaction submission: {e}")
            raise

async def main():
    NODE_URL = "https://api.testnet.aptoslabs.com/v1"
    rest_client = RestClient(NODE_URL)
    private_key_hex = os.getenv('APTOS_PRIVATEKEY')
    if private_key_hex.startswith("0x"):
        private_key_hex = private_key_hex[2:]
    private_key_bytes = bytes.fromhex(private_key_hex)
    account = Account.load_key(private_key_bytes)
    API_URL = "https://perps-tradeapi.kanalabs.io/updateStopLoss"
    PARAMS = {
        "marketId": 501,
        "tradeSide": True,
        "newStopLossPrice": 6.89
    }
    HEADERS = {"x-api-key": os.getenv('API_KEY')}
    handler = AptosTransactionHandler(rest_client, account)
    payload_data = handler.fetch_payload(API_URL, PARAMS, HEADERS)
    
    if not payload_data:
        print("Failed to fetch payload data.")
        return
    
    try:
        payload_data["functionArguments"] = [
            int(payload_data["functionArguments"][0]),
            payload_data["functionArguments"][1].lower() == "true",
            int(payload_data["functionArguments"][2]),
        ]
        payload_data["argumentTypes"] = [Serializer.u64, Serializer.bool, Serializer.u64]
        transaction_payload = handler.create_transaction_payload(payload_data)
        print("Transaction payload created successfully.")
        txn_hash = await handler.submit_transaction(transaction_payload)
        print(f"Transaction submitted successfully. Transaction hash: {txn_hash}")
        
    except Exception as e:
        print(f"Error during transaction process: {e}")

if __name__ == "__main__":
    asyncio.run(main())