diff --git a/contracts/avalanche/connectors/0x/events.sol b/contracts/avalanche/connectors/0x/events.sol
new file mode 100644
index 00000000..66f9943a
--- /dev/null
+++ b/contracts/avalanche/connectors/0x/events.sol
@@ -0,0 +1,12 @@
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSwap(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
diff --git a/contracts/avalanche/connectors/0x/helpers.sol b/contracts/avalanche/connectors/0x/helpers.sol
new file mode 100644
index 00000000..cefa1dee
--- /dev/null
+++ b/contracts/avalanche/connectors/0x/helpers.sol
@@ -0,0 +1,65 @@
+pragma solidity ^0.7.0;
+
+import {TokenInterface} from "../../common/interfaces.sol";
+import {DSMath} from "../../common/math.sol";
+import {Basic} from "../../common/basic.sol";
+import {ZeroExData} from "./interface.sol";
+
+contract Helpers is DSMath, Basic {
+    /**
+     * @dev 0x Address
+     */
+    address internal constant zeroExAddr =
+        0xDef1C0ded9bec7F1a1670819833240f027b25EfF;
+
+    function _swapHelper(ZeroExData memory zeroExData, uint256 avaxAmt)
+        internal
+        returns (uint256 buyAmt)
+    {
+        TokenInterface buyToken = zeroExData.buyToken;
+        (uint256 _buyDec, uint256 _sellDec) = getTokensDec(
+            buyToken,
+            zeroExData.sellToken
+        );
+        uint256 _sellAmt18 = convertTo18(_sellDec, zeroExData._sellAmt);
+        uint256 _slippageAmt = convert18ToDec(
+            _buyDec,
+            wmul(zeroExData.unitAmt, _sellAmt18)
+        );
+
+        uint256 initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = zeroExAddr.call{value: avaxAmt}(zeroExData.callData);
+        if (!success) revert("0x-swap-failed");
+
+        uint256 finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+    function _swap(ZeroExData memory zeroExData, uint256 setId)
+        internal
+        returns (ZeroExData memory)
+    {
+        TokenInterface _sellAddr = zeroExData.sellToken;
+
+        uint256 avaxAmt;
+        if (address(_sellAddr) == avaxAddr) {
+            avaxAmt = zeroExData._sellAmt;
+        } else {
+            approve(
+                TokenInterface(_sellAddr),
+                zeroExAddr,
+                zeroExData._sellAmt
+            );
+        }
+
+        zeroExData._buyAmt = _swapHelper(zeroExData, avaxAmt);
+        setUint(setId, zeroExData._buyAmt);
+
+        return zeroExData;
+    }
+}
diff --git a/contracts/avalanche/connectors/0x/interface.sol b/contracts/avalanche/connectors/0x/interface.sol
new file mode 100644
index 00000000..ae6016f2
--- /dev/null
+++ b/contracts/avalanche/connectors/0x/interface.sol
@@ -0,0 +1,12 @@
+pragma solidity ^0.7.0;
+
+import {TokenInterface} from "../../common/interfaces.sol";
+
+struct ZeroExData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint256 _sellAmt;
+    uint256 _buyAmt;
+    uint256 unitAmt;
+    bytes callData;
+}
diff --git a/contracts/avalanche/connectors/0x/main.sol b/contracts/avalanche/connectors/0x/main.sol
new file mode 100644
index 00000000..6c5693a5
--- /dev/null
+++ b/contracts/avalanche/connectors/0x/main.sol
@@ -0,0 +1,64 @@
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 0x.
+ * @dev On-chain DEX Aggregator.
+ */
+
+import {TokenInterface, MemoryInterface} from "../../common/interfaces.sol";
+import {Stores} from "../../common/stores.sol";
+import {ZeroExData} from "./interface.sol";
+import {Helpers} from "./helpers.sol";
+import {Events} from "./events.sol";
+
+abstract contract ZeroEx is Helpers {
+    /**
+     * @notice Swap tokens on 0x
+     * @dev Sell Avax/ERC20_Token using 0x.
+     * @param buyAddr The address of the token to buy.(For avax: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAddr The address of the token to sell.(For avax: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAmt The amount of the token to sell.
+     * @param unitAmt The amount of buyAmt/sellAmt with slippage.
+     * @param callData Data from 0x API.
+     * @param setId ID stores the amount of token brought.
+     */
+
+    function swap(
+        address buyAddr,
+        address sellAddr,
+        uint256 sellAmt,
+        uint256 unitAmt,
+        bytes calldata callData,
+        uint256 setId
+    )
+        external
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        ZeroExData memory zeroExData = ZeroExData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        zeroExData = _swap(zeroExData, setId);
+
+        _eventName = "LogSwap(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(
+            buyAddr,
+            sellAddr,
+            zeroExData._buyAmt,
+            zeroExData._sellAmt,
+            0,
+            setId
+        );
+    }
+}
+
+contract ConnectV2ZeroExAvalanche is ZeroEx {
+    string public name = "0x-V4";
+}
diff --git a/contracts/avalanche/connectors/paraswap/helpers.sol b/contracts/avalanche/connectors/paraswap/helpers.sol
index ee3de20f..7e7032a3 100644
--- a/contracts/avalanche/connectors/paraswap/helpers.sol
+++ b/contracts/avalanche/connectors/paraswap/helpers.sol
@@ -1,12 +1,11 @@
 pragma solidity ^0.7.0;
 
-import { DSMath } from "../../common/math.sol";
-import { Basic } from "../../common/basic.sol";
-import { TokenInterface } from "../../common/interfaces.sol";
-import { AugustusSwapperInterface } from "./interface.sol";
+import {DSMath} from "../../common/math.sol";
+import {Basic} from "../../common/basic.sol";
+import {TokenInterface} from "../../common/interfaces.sol";
+import {AugustusSwapperInterface} from "./interface.sol";
 
 abstract contract Helpers is DSMath, Basic {
-
     struct SwapData {
         TokenInterface sellToken;
         TokenInterface buyToken;
@@ -16,13 +15,23 @@ abstract contract Helpers is DSMath, Basic {
         bytes callData;
     }
 
-    address internal constant paraswap = 0xDEF171Fe48CF0115B1d80b88dc8eAB59176FEe57;
-
-    function _swapHelper(SwapData memory swapData, uint256 wavaxAmt) internal returns (uint256 buyAmt) {
+    address internal constant paraswap =
+        0xDEF171Fe48CF0115B1d80b88dc8eAB59176FEe57;
+        
+    function _swapHelper(SwapData memory swapData, uint256 wavaxAmt)
+        internal
+        returns (uint256 buyAmt)
+    {
         TokenInterface buyToken = swapData.buyToken;
-        (uint256 _buyDec, uint256 _sellDec) = getTokensDec(buyToken, swapData.sellToken);
+        (uint256 _buyDec, uint256 _sellDec) = getTokensDec(
+            buyToken,
+            swapData.sellToken
+        );
         uint256 _sellAmt18 = convertTo18(_sellDec, swapData._sellAmt);
-        uint256 _slippageAmt = convert18ToDec(_buyDec, wmul(swapData.unitAmt, _sellAmt18));
+        uint256 _slippageAmt = convert18ToDec(
+            _buyDec,
+            wmul(swapData.unitAmt, _sellAmt18)
+        );
 
         uint256 initalBal = getTokenBal(buyToken);
 
@@ -36,7 +45,10 @@ abstract contract Helpers is DSMath, Basic {
         require(_slippageAmt <= buyAmt, "Too much slippage");
     }
 
-    function _swap(SwapData memory swapData, uint256 setId) internal returns (SwapData memory) {
+    function _swap(SwapData memory swapData, uint256 setId)
+        internal
+        returns (SwapData memory)
+    {
         TokenInterface _sellAddr = swapData.sellToken;
 
         uint256 avaxAmt;
@@ -44,7 +56,8 @@ abstract contract Helpers is DSMath, Basic {
         if (address(_sellAddr) == avaxAddr) {
             avaxAmt = swapData._sellAmt;
         } else {
-            address tokenProxy = AugustusSwapperInterface(paraswap).getTokenTransferProxy();
+            address tokenProxy = AugustusSwapperInterface(paraswap)
+                .getTokenTransferProxy();
             approve(TokenInterface(_sellAddr), tokenProxy, swapData._sellAmt);
         }
 
@@ -54,4 +67,4 @@ abstract contract Helpers is DSMath, Basic {
 
         return swapData;
     }
-}
\ No newline at end of file
+}
diff --git a/contracts/mainnet/connectors/0x/events.sol b/contracts/mainnet/connectors/0x/events.sol
new file mode 100644
index 00000000..66f9943a
--- /dev/null
+++ b/contracts/mainnet/connectors/0x/events.sol
@@ -0,0 +1,12 @@
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSwap(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
diff --git a/contracts/mainnet/connectors/0x/helpers.sol b/contracts/mainnet/connectors/0x/helpers.sol
new file mode 100644
index 00000000..b3979d06
--- /dev/null
+++ b/contracts/mainnet/connectors/0x/helpers.sol
@@ -0,0 +1,65 @@
+pragma solidity ^0.7.0;
+
+import {TokenInterface} from "../../common/interfaces.sol";
+import {DSMath} from "../../common/math.sol";
+import {Basic} from "../../common/basic.sol";
+import {ZeroExData} from "./interface.sol";
+
+contract Helpers is DSMath, Basic {
+    /**
+     * @dev 0x Address
+     */
+    address internal constant zeroExAddr =
+        0xDef1C0ded9bec7F1a1670819833240f027b25EfF;
+
+    function _swapHelper(ZeroExData memory zeroExData, uint256 ethAmt)
+        internal
+        returns (uint256 buyAmt)
+    {
+        TokenInterface buyToken = zeroExData.buyToken;
+        (uint256 _buyDec, uint256 _sellDec) = getTokensDec(
+            buyToken,
+            zeroExData.sellToken
+        );
+        uint256 _sellAmt18 = convertTo18(_sellDec, zeroExData._sellAmt);
+        uint256 _slippageAmt = convert18ToDec(
+            _buyDec,
+            wmul(zeroExData.unitAmt, _sellAmt18)
+        );
+
+        uint256 initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = zeroExAddr.call{value: ethAmt}(zeroExData.callData);
+        if (!success) revert("0x-swap-failed");
+
+        uint256 finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+    function _swap(ZeroExData memory zeroExData, uint256 setId)
+        internal
+        returns (ZeroExData memory)
+    {
+        TokenInterface _sellAddr = zeroExData.sellToken;
+
+        uint256 ethAmt;
+        if (address(_sellAddr) == ethAddr) {
+            ethAmt = zeroExData._sellAmt;
+        } else {
+            approve(
+                TokenInterface(_sellAddr),
+                zeroExAddr,
+                zeroExData._sellAmt
+            );
+        }
+
+        zeroExData._buyAmt = _swapHelper(zeroExData, ethAmt);
+        setUint(setId, zeroExData._buyAmt);
+
+        return zeroExData;
+    }
+}
diff --git a/contracts/mainnet/connectors/0x/interface.sol b/contracts/mainnet/connectors/0x/interface.sol
new file mode 100644
index 00000000..ae6016f2
--- /dev/null
+++ b/contracts/mainnet/connectors/0x/interface.sol
@@ -0,0 +1,12 @@
+pragma solidity ^0.7.0;
+
+import {TokenInterface} from "../../common/interfaces.sol";
+
+struct ZeroExData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint256 _sellAmt;
+    uint256 _buyAmt;
+    uint256 unitAmt;
+    bytes callData;
+}
diff --git a/contracts/mainnet/connectors/0x/main.sol b/contracts/mainnet/connectors/0x/main.sol
new file mode 100644
index 00000000..404bd844
--- /dev/null
+++ b/contracts/mainnet/connectors/0x/main.sol
@@ -0,0 +1,64 @@
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 0x.
+ * @dev On-chain DEX Aggregator.
+ */
+
+import {TokenInterface, MemoryInterface} from "../../common/interfaces.sol";
+import {Stores} from "../../common/stores.sol";
+import {ZeroExData} from "./interface.sol";
+import {Helpers} from "./helpers.sol";
+import {Events} from "./events.sol";
+
+abstract contract ZeroEx is Helpers {
+    /**
+     * @notice Swap tokens on 0x
+     * @dev Sell ETH/ERC20_Token using 0x.
+     * @param buyAddr The address of the token to buy.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAddr The address of the token to sell.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAmt The amount of the token to sell.
+     * @param unitAmt The amount of buyAmt/sellAmt with slippage.
+     * @param callData Data from 0x API.
+     * @param setId ID stores the amount of token brought.
+     */
+
+    function swap(
+        address buyAddr,
+        address sellAddr,
+        uint256 sellAmt,
+        uint256 unitAmt,
+        bytes calldata callData,
+        uint256 setId
+    )
+        external
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        ZeroExData memory zeroExData = ZeroExData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        zeroExData = _swap(zeroExData, setId);
+
+        _eventName = "LogSwap(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(
+            buyAddr,
+            sellAddr,
+            zeroExData._buyAmt,
+            zeroExData._sellAmt,
+            0,
+            setId
+        );
+    }
+}
+
+contract ConnectV2ZeroEx is ZeroEx {
+    string public name = "0x-V4";
+}
diff --git a/contracts/mainnet/connectors/paraswap/events.sol b/contracts/mainnet/connectors/paraswap/events.sol
new file mode 100644
index 00000000..0f9470dc
--- /dev/null
+++ b/contracts/mainnet/connectors/paraswap/events.sol
@@ -0,0 +1,11 @@
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSwap(
+        address buyToken,
+        address sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 setId
+    );
+}
\ No newline at end of file
diff --git a/contracts/mainnet/connectors/paraswap/helpers.sol b/contracts/mainnet/connectors/paraswap/helpers.sol
new file mode 100644
index 00000000..8f8e8d74
--- /dev/null
+++ b/contracts/mainnet/connectors/paraswap/helpers.sol
@@ -0,0 +1,70 @@
+pragma solidity ^0.7.0;
+
+import {DSMath} from "../../common/math.sol";
+import {Basic} from "../../common/basic.sol";
+import {TokenInterface} from "../../common/interfaces.sol";
+import {AugustusSwapperInterface} from "./interface.sol";
+
+abstract contract Helpers is DSMath, Basic {
+    struct SwapData {
+        TokenInterface sellToken;
+        TokenInterface buyToken;
+        uint256 _sellAmt;
+        uint256 _buyAmt;
+        uint256 unitAmt;
+        bytes callData;
+    }
+
+    address internal constant paraswap =
+        0xDEF171Fe48CF0115B1d80b88dc8eAB59176FEe57;
+
+    function _swapHelper(SwapData memory swapData, uint256 wethAmt)
+        internal
+        returns (uint256 buyAmt)
+    {
+        TokenInterface buyToken = swapData.buyToken;
+        (uint256 _buyDec, uint256 _sellDec) = getTokensDec(
+            buyToken,
+            swapData.sellToken
+        );
+        uint256 _sellAmt18 = convertTo18(_sellDec, swapData._sellAmt);
+        uint256 _slippageAmt = convert18ToDec(
+            _buyDec,
+            wmul(swapData.unitAmt, _sellAmt18)
+        );
+
+        uint256 initalBal = getTokenBal(buyToken);
+
+        (bool success, ) = paraswap.call{value: wethAmt}(swapData.callData);
+        if (!success) revert("paraswap-failed");
+
+        uint256 finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+    function _swap(SwapData memory swapData, uint256 setId)
+        internal
+        returns (SwapData memory)
+    {
+        TokenInterface _sellAddr = swapData.sellToken;
+
+        uint256 ethAmt;
+
+        if (address(_sellAddr) == ethAddr) {
+            ethAmt = swapData._sellAmt;
+        } else {
+            address tokenProxy = AugustusSwapperInterface(paraswap)
+                .getTokenTransferProxy();
+            approve(TokenInterface(_sellAddr), tokenProxy, swapData._sellAmt);
+        }
+
+        swapData._buyAmt = _swapHelper(swapData, ethAmt);
+
+        setUint(setId, swapData._buyAmt);
+
+        return swapData;
+    }
+}
diff --git a/contracts/mainnet/connectors/paraswap/interface.sol b/contracts/mainnet/connectors/paraswap/interface.sol
new file mode 100644
index 00000000..a63b4c77
--- /dev/null
+++ b/contracts/mainnet/connectors/paraswap/interface.sol
@@ -0,0 +1,5 @@
+pragma solidity ^0.7.0;
+
+interface AugustusSwapperInterface {
+    function getTokenTransferProxy() external view returns (address);
+}
\ No newline at end of file
diff --git a/contracts/mainnet/connectors/paraswap/main.sol b/contracts/mainnet/connectors/paraswap/main.sol
new file mode 100644
index 00000000..0d32dd04
--- /dev/null
+++ b/contracts/mainnet/connectors/paraswap/main.sol
@@ -0,0 +1,59 @@
+pragma solidity ^0.7.0;
+
+/**
+ * @title Paraswap.
+ * @dev DEX Aggregator.
+ */
+
+import {TokenInterface} from "../../common/interfaces.sol";
+import {Stores} from "../../common/stores.sol";
+import {Helpers} from "./helpers.sol";
+
+abstract contract ParaswapResolver is Helpers {
+    /**
+     * @dev Sell ETH/ERC20_Token using ParaSwap.
+     * @notice Swap tokens from exchanges like kyber, 0x etc, with calculation done off-chain.
+     * @param buyAddr The address of the token to buy.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAddr The address of the token to sell.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAmt The amount of the token to sell.
+     * @param unitAmt The amount of buyAmt/sellAmt with slippage.
+     * @param callData Data from paraswap API.
+     * @param setId ID stores the amount of token brought.
+     */
+    function swap(
+        address buyAddr,
+        address sellAddr,
+        uint256 sellAmt,
+        uint256 unitAmt,
+        bytes calldata callData,
+        uint256 setId
+    )
+        external
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        Helpers.SwapData memory swapData = Helpers.SwapData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        swapData = _swap(swapData, setId);
+
+        _eventName = "LogSwap(address,address,uint256,uint256,uint256)";
+        _eventParam = abi.encode(
+            address(swapData.buyToken),
+            address(swapData.sellToken),
+            swapData._buyAmt,
+            swapData._sellAmt,
+            setId
+        );
+    }
+}
+
+contract ConnectV2ParaswapV5 is ParaswapResolver {
+    string public name = "Paraswap-v5";
+}
diff --git a/contracts/polygon/connectors/0x/events.sol b/contracts/polygon/connectors/0x/events.sol
new file mode 100644
index 00000000..66f9943a
--- /dev/null
+++ b/contracts/polygon/connectors/0x/events.sol
@@ -0,0 +1,12 @@
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSwap(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
diff --git a/contracts/polygon/connectors/0x/helpers.sol b/contracts/polygon/connectors/0x/helpers.sol
new file mode 100644
index 00000000..b90a2d77
--- /dev/null
+++ b/contracts/polygon/connectors/0x/helpers.sol
@@ -0,0 +1,67 @@
+pragma solidity ^0.7.0;
+
+import {TokenInterface} from "../../common/interfaces.sol";
+import {DSMath} from "../../common/math.sol";
+import {ZeroExData} from "./interface.sol";
+import {Basic} from "../../common/basic.sol";
+
+contract Helpers is DSMath, Basic {
+    /**
+     * @dev 0x Address
+     */
+    address internal constant zeroExAddr =
+        0xDef1C0ded9bec7F1a1670819833240f027b25EfF;
+
+    function _swapHelper(ZeroExData memory zeroExData, uint256 maticAmt)
+        internal
+        returns (uint256 buyAmt)
+    {
+        TokenInterface buyToken = zeroExData.buyToken;
+        (uint256 _buyDec, uint256 _sellDec) = getTokensDec(
+            buyToken,
+            zeroExData.sellToken
+        );
+        uint256 _sellAmt18 = convertTo18(_sellDec, zeroExData._sellAmt);
+        uint256 _slippageAmt = convert18ToDec(
+            _buyDec,
+            wmul(zeroExData.unitAmt, _sellAmt18)
+        );
+
+        uint256 initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = zeroExAddr.call{value: maticAmt}(
+            zeroExData.callData
+        );
+        if (!success) revert("0x-swap-failed");
+
+        uint256 finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+    function _swap(ZeroExData memory zeroExData, uint256 setId)
+        internal
+        returns (ZeroExData memory)
+    {
+        TokenInterface _sellAddr = zeroExData.sellToken;
+
+        uint256 maticAmt;
+        if (address(_sellAddr) == maticAddr) {
+            maticAmt = zeroExData._sellAmt;
+        } else {
+            approve(
+                TokenInterface(_sellAddr),
+                zeroExAddr,
+                zeroExData._sellAmt
+            );
+        }
+
+        zeroExData._buyAmt = _swapHelper(zeroExData, maticAmt);
+        setUint(setId, zeroExData._buyAmt);
+
+        return zeroExData;
+    }
+}
diff --git a/contracts/polygon/connectors/0x/interface.sol b/contracts/polygon/connectors/0x/interface.sol
new file mode 100644
index 00000000..ae6016f2
--- /dev/null
+++ b/contracts/polygon/connectors/0x/interface.sol
@@ -0,0 +1,12 @@
+pragma solidity ^0.7.0;
+
+import {TokenInterface} from "../../common/interfaces.sol";
+
+struct ZeroExData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint256 _sellAmt;
+    uint256 _buyAmt;
+    uint256 unitAmt;
+    bytes callData;
+}
diff --git a/contracts/polygon/connectors/0x/main.sol b/contracts/polygon/connectors/0x/main.sol
new file mode 100644
index 00000000..e47c6508
--- /dev/null
+++ b/contracts/polygon/connectors/0x/main.sol
@@ -0,0 +1,64 @@
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 0x.
+ * @dev On-chain DEX Aggregator.
+ */
+
+import {TokenInterface, MemoryInterface} from "../../common/interfaces.sol";
+import {Stores} from "../../common/stores.sol";
+import {ZeroExData} from "./interface.sol";
+import {Helpers} from "./helpers.sol";
+import {Events} from "./events.sol";
+
+abstract contract ZeroEx is Helpers {
+    /**
+     * @notice Swap tokens on 0x
+     * @dev Sell matic/ERC20_Token using 0x.
+     * @param buyAddr The address of the token to buy.(For matic: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAddr The address of the token to sell.(For matic: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param sellAmt The amount of the token to sell.
+     * @param unitAmt The amount of buyAmt/sellAmt with slippage.
+     * @param callData Data from 0x API.
+     * @param setId ID stores the amount of token brought.
+     */
+
+    function swap(
+        address buyAddr,
+        address sellAddr,
+        uint256 sellAmt,
+        uint256 unitAmt,
+        bytes calldata callData,
+        uint256 setId
+    )
+        external
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        ZeroExData memory zeroExData = ZeroExData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        zeroExData = _swap(zeroExData, setId);
+
+        _eventName = "LogSwap(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(
+            buyAddr,
+            sellAddr,
+            zeroExData._buyAmt,
+            zeroExData._sellAmt,
+            0,
+            setId
+        );
+    }
+}
+
+contract ConnectV2ZeroExPolygon is ZeroEx {
+    string public name = "0x-V4";
+}
diff --git a/contracts/polygon/connectors/basic-ERC1155/events.sol b/contracts/polygon/connectors/basic-ERC1155/events.sol
new file mode 100644
index 00000000..def17f4c
--- /dev/null
+++ b/contracts/polygon/connectors/basic-ERC1155/events.sol
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogDepositERC1155(
+        address indexed erc1155,
+        address from,
+        uint256 tokenId,
+        uint256 amount,
+        uint256 getId,
+        uint256 setId
+    );
+    event LogWithdrawERC1155(
+        address indexed erc1155,
+        uint256 tokenId,
+        address indexed to,
+        uint256 amount,
+        uint256 getId,
+        uint256 setId
+    );
+}
diff --git a/contracts/polygon/connectors/basic-ERC1155/main.sol b/contracts/polygon/connectors/basic-ERC1155/main.sol
new file mode 100644
index 00000000..2958151f
--- /dev/null
+++ b/contracts/polygon/connectors/basic-ERC1155/main.sol
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+/**
+ * @title Basic.
+ * @dev Deposit & Withdraw from ERC1155 DSA.
+ */
+import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
+
+import {DSMath} from "../../common/math.sol";
+import {Basic} from "../../common/basic.sol";
+import {Events} from "./events.sol";
+
+abstract contract BasicResolver is Events, DSMath, Basic {
+    /**
+     * @dev Deposit Assets To Smart Account.
+     * @notice Deposit a ERC1155 token to DSA
+     * @param token Address of token.
+     * @param tokenId ID of token.
+     * @param amount Amount to deposit.
+     * @param getId ID to retrieve amount.
+     * @param setId ID stores the amount.
+     */
+    function depositERC1155(
+        address token,
+        uint256 tokenId,
+        uint256 amount,
+        uint256 getId,
+        uint256 setId
+    )
+        public
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        uint256 _amount = getUint(getId, amount);
+
+        IERC1155 tokenContract = IERC1155(token);
+        tokenContract.safeTransferFrom(
+            msg.sender,
+            address(this),
+            tokenId,
+            _amount,
+            ""
+        );
+
+        setUint(setId, _amount);
+
+        _eventName = "LogDepositERC1155(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(
+            token,
+            msg.sender,
+            tokenId,
+            _amount,
+            getId,
+            setId
+        );
+    }
+
+    /**
+     * @dev Withdraw Assets To Smart Account.
+     * @notice Withdraw a ERC1155 token from DSA
+     * @param token Address of the token.
+     * @param tokenId ID of token.
+     * @param to The address to receive the token upon withdrawal
+     * @param amount Amount to withdraw.
+     * @param getId ID to retrieve amount.
+     * @param setId ID stores the amount.
+     */
+    function withdrawERC1155(
+        address token,
+        uint256 tokenId,
+        address payable to,
+        uint256 amount,
+        uint256 getId,
+        uint256 setId
+    )
+        public
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        uint256 _amount = getUint(getId, amount);
+        IERC1155 tokenContract = IERC1155(token);
+        tokenContract.safeTransferFrom(address(this), to, tokenId, _amount, "");
+
+        setUint(setId, _amount);
+
+        _eventName = "LogWithdrawERC1155(address,uint256,address,uint256,uint256,uint256)";
+        _eventParam = abi.encode(token, tokenId, to, _amount, getId, setId);
+    }
+}
+
+contract ConnectV2BasicERC1155Polygon is BasicResolver {
+    string public constant name = "BASIC-ERC1155-v1.0";
+}
diff --git a/contracts/polygon/connectors/basic-ERC721/events.sol b/contracts/polygon/connectors/basic-ERC721/events.sol
new file mode 100644
index 00000000..b47e4b4d
--- /dev/null
+++ b/contracts/polygon/connectors/basic-ERC721/events.sol
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogDepositERC721(
+        address indexed erc721,
+        address from,
+        uint256 tokenId,
+        uint256 getId,
+        uint256 setId
+    );
+    event LogWithdrawERC721(
+        address indexed erc721,
+        uint256 tokenId,
+        address indexed to,
+        uint256 getId,
+        uint256 setId
+    );
+}
diff --git a/contracts/polygon/connectors/basic-ERC721/main.sol b/contracts/polygon/connectors/basic-ERC721/main.sol
new file mode 100644
index 00000000..465bf335
--- /dev/null
+++ b/contracts/polygon/connectors/basic-ERC721/main.sol
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+/**
+ * @title Basic.
+ * @dev Deposit & Withdraw ERC721 from DSA.
+ */
+import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
+
+import {DSMath} from "../../common/math.sol";
+import {Basic} from "../../common/basic.sol";
+import {Events} from "./events.sol";
+
+abstract contract BasicResolver is Events, DSMath, Basic {
+    /**
+     * @dev Deposit Assets To Smart Account.
+     * @notice Deposit a ERC721 token to DSA
+     * @param token Address of token.
+     * @param tokenId ID of token.
+     * @param getId ID to retrieve tokenId.
+     * @param setId ID stores the tokenId.
+     */
+    function depositERC721(
+        address token,
+        uint256 tokenId,
+        uint256 getId,
+        uint256 setId
+    )
+        public
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        uint256 _tokenId = getUint(getId, tokenId);
+
+        IERC721 tokenContract = IERC721(token);
+        tokenContract.safeTransferFrom(msg.sender, address(this), _tokenId);
+
+        setUint(setId, _tokenId);
+
+        _eventName = "LogDepositERC721(address,address,uint256,uint256,uint256)";
+        _eventParam = abi.encode(token, msg.sender, _tokenId, getId, setId);
+    }
+
+    /**
+     * @dev Withdraw Assets To Smart Account.
+     * @notice Withdraw a ERC721 token from DSA
+     * @param token Address of the token.
+     * @param tokenId ID of token.
+     * @param to The address to receive the token upon withdrawal
+     * @param getId ID to retrieve tokenId.
+     * @param setId ID stores the tokenId.
+     */
+    function withdrawERC721(
+        address token,
+        uint256 tokenId,
+        address payable to,
+        uint256 getId,
+        uint256 setId
+    )
+        public
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    {
+        uint256 _tokenId = getUint(getId, tokenId);
+        IERC721 tokenContract = IERC721(token);
+        tokenContract.safeTransferFrom(address(this), to, _tokenId);
+
+        setUint(setId, _tokenId);
+
+        _eventName = "LogWithdrawERC721(address,uint256,address,uint256,uint256)";
+        _eventParam = abi.encode(token, _tokenId, to, getId, setId);
+    }
+}
+
+contract ConnectV2BasicERC721Polygon is BasicResolver {
+    string public constant name = "BASIC-ERC721-v1.0";
+}
diff --git a/hardhat.config.ts b/hardhat.config.ts
index 44718268..813267d1 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -105,6 +105,7 @@ const config: HardhatUserConfig = {
       forking: {
         url: String(getNetworkUrl(String(process.env.networkType))),
       },
+      gasPrice: 25000000000,
     },
     mainnet: createConfig("mainnet"),
     polygon: createConfig("polygon"),
diff --git a/scripts/deployment/deploy.ts b/scripts/deployment/deploy.ts
index a7eace0c..2803e45f 100644
--- a/scripts/deployment/deploy.ts
+++ b/scripts/deployment/deploy.ts
@@ -23,6 +23,7 @@ async function main() {
     "Uniswap-V3-Staker-v1.1" : "ConnectV2UniswapV3StakerPolygon",
     "Paraswap-v5" : "ConnectV2ParaswapV5Polygon"
     "1INCH-V4" : "ConnectV2OneInchV4Polygon",
+    "ZEROEX-A": "ConnectV2ZeroExAvalanche",
   };
 
   const addressMapping: Record<string, string> = {};
diff --git a/scripts/deployment/deployConnector.ts b/scripts/deployment/deployConnector.ts
index 2aaea507..8f3bcd28 100644
--- a/scripts/deployment/deployConnector.ts
+++ b/scripts/deployment/deployConnector.ts
@@ -8,15 +8,14 @@ export const deployConnector = async (connectorName: string) => {
   console.log(`${connectorName} Deployed: ${connector.address}`);
 
   try {
-        await hre.run("verify:verify", {
-            address: connector.address,
-            constructorArguments: []
-          }
-        )
-    } catch (error) {
-        console.log(`Failed to verify: ${connectorName}@${connector.address}`)
-        console.log(error)
-        console.log()
-    }
+    await hre.run("verify:verify", {
+      address: connector.address,
+      constructorArguments: [],
+    });
+  } catch (error) {
+    console.log(`Failed to verify: ${connectorName}@${connector.address}`);
+    console.log(error);
+    console.log();
+  }
   return connector.address;
 };
diff --git a/scripts/tests/avalanche/addresses.ts b/scripts/tests/avalanche/addresses.ts
index d2da378f..e3919fb2 100644
--- a/scripts/tests/avalanche/addresses.ts
+++ b/scripts/tests/avalanche/addresses.ts
@@ -5,7 +5,7 @@ export const addresses: Record<string, any> = {
     // "INSTAPOOL-A": "0x8f1e38c53af7bD2b2bE01b9580911b7Cca504F1b",
   },
   core: {
-    connectorsV2: "0x67fCE99Dd6d8d659eea2a1ac1b8881c57eb6592B",
-    instaIndex: "0x1eE00C305C51Ff3bE60162456A9B533C07cD9288",
+    connectorsV2: "0x127d8cD0E2b2E0366D522DeA53A787bfE9002C14",
+    instaIndex: "0x6CE3e607C808b4f4C26B7F6aDAeB619e49CAbb25",
   },
 };
diff --git a/test/avalanche/0x/zeroEx.test.ts b/test/avalanche/0x/zeroEx.test.ts
new file mode 100644
index 00000000..dfb1c011
--- /dev/null
+++ b/test/avalanche/0x/zeroEx.test.ts
@@ -0,0 +1,159 @@
+import hre from "hardhat";
+import axios from "axios";
+import { expect } from "chai";
+const { ethers } = hre; //check
+import { BigNumber } from "bignumber.js";
+import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
+import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
+import { encodeSpells } from "../../../scripts/tests/encodeSpells";
+import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";
+import { addresses } from "../../../scripts/tests/avalanche/addresses";
+import { abis } from "../../../scripts/constant/abis";
+import {ConnectV2ZeroExAvalanche__factory } from "../../../typechain";
+import er20abi from "../../../scripts/constant/abi/basics/erc20.json";
+import type { Signer, Contract } from "ethers";
+
+describe("ZeroEx", function() {
+  const connectorName = "zeroEx-test";
+
+  let dsaWallet0: Contract;
+  let wallet0: Signer, wallet1: Signer;
+  let masterSigner: Signer;
+  let instaConnectorsV2: Contract;
+  let connector: Contract;
+
+  before(async () => {
+    await hre.network.provider.request({
+      method: "hardhat_reset",
+      params: [
+        {
+          forking: {
+            // @ts-ignore
+            jsonRpcUrl: hre.config.networks.hardhat.forking.url,
+          },
+        },
+      ],
+    });
+    [wallet0, wallet1] = await ethers.getSigners();
+
+    masterSigner = await getMasterSigner();
+    instaConnectorsV2 = await ethers.getContractAt(
+      abis.core.connectorsV2,
+      addresses.core.connectorsV2
+    );
+    connector = await deployAndEnableConnector({
+      connectorName,
+      contractArtifact: ConnectV2ZeroExAvalanche__factory,
+      signer: masterSigner,
+      connectors: instaConnectorsV2,
+    });
+    console.log("Connector address", connector.address);
+  });
+
+  it("Should have contracts deployed.", async function() {
+    expect(!!instaConnectorsV2.address).to.be.true;
+    expect(!!connector.address).to.be.true;
+    expect(!!(await masterSigner.getAddress())).to.be.true;
+  });
+
+  describe("DSA wallet setup", function() {
+    it("Should build DSA v2", async function() {
+      dsaWallet0 = await buildDSAv2(await wallet0.getAddress());
+      expect(!!dsaWallet0.address).to.be.true;
+    });
+
+    it("Deposit matic into DSA wallet", async function() {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10"),
+      });
+
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
+        ethers.utils.parseEther("10")
+      );
+    });
+  });
+
+  describe("Main", function() {
+    it("should swap the tokens", async function() {
+      let buyTokenAmount: any;
+      async function getArg() {
+        // const slippage = 0.5;
+        /* matic -> dai */
+        const sellTokenAddress = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"; // matic,  decimals 18
+        const sellTokenDecimals = 18;
+        const buyTokenAddress = "0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063"; // dai, decimals 18
+        const buyTokenDecimals = 18;
+        const amount = 1;
+
+        const srcAmount = new BigNumber(amount)
+          .times(new BigNumber(10).pow(sellTokenDecimals))
+          .toFixed(0);
+
+        let url = `https://avalanche.api.0x.org/swap/v1/quote`;
+
+        const params = {
+          buyToken: "DAI",
+          sellToken: "AVAX",
+          sellAmount: "1000000000000000000", // Always denominated in wei
+        };
+        const response = await axios
+          .get(url, { params: params })
+          .then((data: any) => data);
+          
+console.log(response);
+        buyTokenAmount = response.data.buyAmount;
+        const calldata = response.data.data;
+
+        let caculateUnitAmt = () => {
+          const buyTokenAmountRes = new BigNumber(buyTokenAmount)
+            .dividedBy(new BigNumber(10).pow(buyTokenDecimals))
+            .toFixed(8);
+
+          let unitAmt: any = new BigNumber(buyTokenAmountRes).dividedBy(
+            new BigNumber(amount)
+          );
+
+          unitAmt = unitAmt.multipliedBy((100 - 0.3) / 100);
+          unitAmt = unitAmt.multipliedBy(1e18).toFixed(0);
+          return unitAmt;
+        };
+        let unitAmt = caculateUnitAmt();
+
+        return [
+          buyTokenAddress,
+          sellTokenAddress,
+          srcAmount,
+          unitAmt,
+          calldata,
+          0,
+        ];
+      }
+
+      let arg = await getArg();
+      const spells = [
+        {
+          connector: connectorName,
+          method: "swap",
+          args: arg,
+        },
+      ];
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), await wallet1.getAddress());
+      const receipt = await tx.wait();
+    
+      const daiToken = await ethers.getContractAt(
+        er20abi,
+        "0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063" // dai address
+      );
+
+      expect(await daiToken.balanceOf(dsaWallet0.address)).to.be.gte(
+        buyTokenAmount
+      );
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.lte(
+        ethers.utils.parseEther("9")
+      );
+    });
+  });
+});
diff --git a/test/mainnet/0x/zeroEx.test.ts b/test/mainnet/0x/zeroEx.test.ts
new file mode 100644
index 00000000..2cddb01f
--- /dev/null
+++ b/test/mainnet/0x/zeroEx.test.ts
@@ -0,0 +1,161 @@
+import hre from "hardhat";
+import axios from "axios";
+import { expect } from "chai";
+const { ethers } = hre; //check
+import { BigNumber } from "bignumber.js";
+import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
+import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
+import { encodeSpells } from "../../../scripts/tests/encodeSpells";
+import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";
+import { addresses } from "../../../scripts/tests/mainnet/addresses";
+import { abis } from "../../../scripts/constant/abis";
+import { ConnectV2ZeroEx, ConnectV2ZeroEx__factory } from "../../../typechain";
+import er20abi from "../../../scripts/constant/abi/basics/erc20.json";
+import type { Signer, Contract } from "ethers";
+
+describe("ZeroEx", function() {
+  const connectorName = "zeroEx-test";
+
+  let dsaWallet0: Contract;
+  let wallet0: Signer, wallet1: Signer;
+  let masterSigner: Signer;
+  let instaConnectorsV2: Contract;
+  let connector: Contract;
+
+  before(async () => {
+    await hre.network.provider.request({
+      method: "hardhat_reset",
+      params: [
+        {
+          forking: {
+            // @ts-ignore
+            jsonRpcUrl: hre.config.networks.hardhat.forking.url,
+          },
+        },
+      ],
+    });
+    [wallet0, wallet1] = await ethers.getSigners();
+
+    masterSigner = await getMasterSigner();
+    instaConnectorsV2 = await ethers.getContractAt(
+      abis.core.connectorsV2,
+      addresses.core.connectorsV2
+    );
+    connector = await deployAndEnableConnector({
+      connectorName,
+      contractArtifact: ConnectV2ZeroEx__factory,
+      signer: masterSigner,
+      connectors: instaConnectorsV2,
+    });
+    console.log("Connector address", connector.address);
+  });
+
+  it("Should have contracts deployed.", async function() {
+    expect(!!instaConnectorsV2.address).to.be.true;
+    expect(!!connector.address).to.be.true;
+    expect(!!(await masterSigner.getAddress())).to.be.true;
+  });
+
+  describe("DSA wallet setup", function() {
+    it("Should build DSA v2", async function() {
+      dsaWallet0 = await buildDSAv2(await wallet0.getAddress());
+      expect(!!dsaWallet0.address).to.be.true;
+    });
+
+    it("Deposit ETH into DSA wallet", async function() {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10"),
+      });
+      // console.log(dsaWallet0.address);
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
+        ethers.utils.parseEther("10")
+      );
+    });
+  });
+
+  describe("Main", function() {
+    it("should swap the tokens", async function() {
+      let buyTokenAmount: any;
+      async function getArg() {
+        // const slippage = 0.5;
+        /* Eth -> dai */
+        const sellTokenAddress = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"; // eth,  decimals 18
+        const sellTokenDecimals = 18;
+        const buyTokenAddress = "0x6b175474e89094c44da98b954eedeac495271d0f"; // dai, decimals 18
+        const buyTokenDecimals = 18;
+        const amount = 1;
+
+        const srcAmount = new BigNumber(amount)
+          .times(new BigNumber(10).pow(sellTokenDecimals))
+          .toFixed(0);
+
+        const fromAddress = dsaWallet0.address;
+
+        let url = `https://api.0x.org/swap/v1/quote`;
+
+        const params = {
+          buyToken: "DAI",
+          sellToken: "ETH",
+          sellAmount: "1000000000000000000", // Always denominated in wei
+        };
+
+        const response = await axios
+          .get(url, { params: params })
+          .then((data: any) => data);
+
+        buyTokenAmount = response.data.buyAmount;
+        const calldata = response.data.data;
+
+        let caculateUnitAmt = () => {
+          const buyTokenAmountRes = new BigNumber(buyTokenAmount)
+            .dividedBy(new BigNumber(10).pow(buyTokenDecimals))
+            .toFixed(8);
+
+          let unitAmt: any = new BigNumber(buyTokenAmountRes).dividedBy(
+            new BigNumber(amount)
+          );
+
+          unitAmt = unitAmt.multipliedBy((100 - 0.3) / 100);
+          unitAmt = unitAmt.multipliedBy(1e18).toFixed(0);
+          return unitAmt;
+        };
+        let unitAmt = caculateUnitAmt();
+
+        return [
+          buyTokenAddress,
+          sellTokenAddress,
+          srcAmount,
+          unitAmt,
+          calldata,
+          0,
+        ];
+      }
+
+      let arg = await getArg();
+      const spells = [
+        {
+          connector: connectorName,
+          method: "swap",
+          args: arg,
+        },
+      ];
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), await wallet1.getAddress());
+      const receipt = await tx.wait();
+
+      const daiToken = await ethers.getContractAt(
+        er20abi,
+        "0x6b175474e89094c44da98b954eedeac495271d0f" // dai address
+      );
+
+      expect(await daiToken.balanceOf(dsaWallet0.address)).to.be.gte(
+        buyTokenAmount
+      );
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.lte(
+        ethers.utils.parseEther("9")
+      );
+    });
+  });
+});
diff --git a/test/mainnet/paraswap/paraswap.test.ts b/test/mainnet/paraswap/paraswap.test.ts
new file mode 100644
index 00000000..d225285c
--- /dev/null
+++ b/test/mainnet/paraswap/paraswap.test.ts
@@ -0,0 +1,177 @@
+import hre from "hardhat";
+import { expect } from "chai";
+import { abis } from "../../../scripts/constant/abis";
+import { addresses } from "../../../scripts/tests/mainnet/addresses";
+import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
+import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";
+import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
+import {
+  ConnectV2ParaswapV5__factory,
+} from "../../../typechain"
+import { parseEther } from "@ethersproject/units";
+import { encodeSpells } from "../../../scripts/tests/encodeSpells";
+import { tokens } from "../../../scripts/tests/mainnet/tokens";
+import { constants } from "../../../scripts/constant/constant";
+import { addLiquidity } from "../../../scripts/tests/addLiquidity";
+import BigNumber from "bignumber.js";
+import axios from "axios";
+const { web3, deployments, waffle, ethers } = hre;
+const { provider, deployContract } = waffle;
+describe("Paraswap", function() {
+  const connectorName = "paraswap-test";
+  let dsaWallet0: any;
+  let masterSigner: any;
+  let instaConnectorsV2: any;
+  let connector: any;
+  const wallets = provider.getWallets();
+  const [wallet0, wallet1, wallet2, wallet3] = wallets;
+  before(async () => {
+    await hre.network.provider.request({
+        method: "hardhat_reset",
+        params: [
+            {
+                forking: {
+                  // @ts-ignore
+                    jsonRpcUrl: hre.config.networks.hardhat.forking.url,
+                    // blockNumber: 13300000,
+                },
+            },
+        ],
+    });
+    masterSigner = await getMasterSigner();
+    const erc20 = abis.basic.erc20;
+    instaConnectorsV2 = await ethers.getContractAt(
+      abis.core.connectorsV2,
+      addresses.core.connectorsV2
+    );
+
+    connector = await deployAndEnableConnector({
+      connectorName,
+      contractArtifact: ConnectV2ParaswapV5__factory,
+      signer: masterSigner,
+      connectors: instaConnectorsV2,
+    });
+    // console.log("Connector address", connector.address);
+  });
+  it("Should have contracts deployed.", async function() {
+    expect(!!instaConnectorsV2.address).to.be.true;
+    expect(!!connector.address).to.be.true;
+    expect(!!masterSigner.address).to.be.true;
+  });
+  describe("DSA wallet setup", function() {
+    it("Should build DSA v2", async function() {
+      dsaWallet0 = await buildDSAv2(wallet0.address);
+      expect(!!dsaWallet0.address).to.be.true;
+    });
+    it("Deposit ETH into DSA wallet", async function() {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10"),
+      });
+
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
+        ethers.utils.parseEther("10")
+      );
+    });
+  });
+  describe("Main", function() {
+    it("should swap successfully", async function() {
+      async function getArg() {
+        const slippage = 1;
+        /* eth -> USDT */
+        const sellTokenAddress = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"; // eth,  decimals 18
+        const sellTokenDecimals = 18;
+        const buyTokenAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7"; // USDT, decimals 6
+        const buyTokenDecimals = 6;
+        const amount = 2;
+        const srcAmount = new BigNumber(amount)
+          .times(new BigNumber(10).pow(sellTokenDecimals))
+          .toFixed(0);
+        const fromAddress = dsaWallet0.address;
+        let url = `https://apiv5.paraswap.io/prices/`;
+        let params = {
+          srcToken: sellTokenAddress,
+          destToken: buyTokenAddress,
+          srcDecimals: sellTokenDecimals,
+          destDecimals: buyTokenDecimals,
+          amount: srcAmount,
+          side: "SELL",
+          network: 1,
+        };
+
+        const priceRoute = await axios
+          .get(url, { params: params })
+          .then((data) => data.data.priceRoute);
+
+        let buyTokenAmount = priceRoute.destAmount;
+        let minAmount = new BigNumber(priceRoute.destAmount)
+          .times(1 - slippage / 100)
+          .toFixed(0);
+
+        let txConfig = {
+          priceRoute: priceRoute,
+          srcToken: sellTokenAddress,
+          destToken: buyTokenAddress,
+          srcDecimals: sellTokenDecimals,
+          destDecimals: buyTokenDecimals,
+          srcAmount: srcAmount,
+          destAmount: minAmount,
+          userAddress: fromAddress,
+        };
+        let url2 = "https://apiv5.paraswap.io/transactions/1?ignoreChecks=true";
+        const calldata = await axios
+          .post(url2, txConfig)
+          .then((data) => data.data.data);
+
+        function caculateUnitAmt(
+          buyAmount: any,
+          sellAmount: any,
+          buyDecimal: any,
+          sellDecimal: any,
+          maxSlippage: any
+        ) {
+          let unitAmt: any;
+          unitAmt = new BigNumber(buyAmount)
+            .dividedBy(10 ** buyDecimal)
+            .dividedBy(new BigNumber(sellAmount).dividedBy(10 ** sellDecimal));
+          unitAmt = unitAmt.multipliedBy((100 - maxSlippage) / 100);
+          unitAmt = unitAmt.multipliedBy(1e18).toFixed(0);
+          return unitAmt;
+        }
+
+        let unitAmt = caculateUnitAmt(
+          buyTokenAmount,
+          srcAmount,
+          buyTokenDecimals,
+          sellTokenDecimals,
+          1
+        );
+
+        return [
+          buyTokenAddress,
+          sellTokenAddress,
+          srcAmount,
+          unitAmt,
+          calldata,
+          0,
+        ];
+      }
+      let arg = await getArg();
+      const spells = [
+        {
+          connector: connectorName,
+          method: "swap",
+          args: arg,
+        },
+      ];
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), wallet1.address);
+      const receipt = await tx.wait();
+
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.lte(
+        ethers.utils.parseEther("8")
+      );
+    });
+  });
+});
diff --git a/test/polygon/0x/zeroEx.test.ts b/test/polygon/0x/zeroEx.test.ts
new file mode 100644
index 00000000..54758ce5
--- /dev/null
+++ b/test/polygon/0x/zeroEx.test.ts
@@ -0,0 +1,159 @@
+import hre from "hardhat";
+import axios from "axios";
+import { expect } from "chai";
+const { ethers } = hre; //check
+import { BigNumber } from "bignumber.js";
+import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
+import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
+import { encodeSpells } from "../../../scripts/tests/encodeSpells";
+import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";
+import { addresses } from "../../../scripts/tests/polygon/addresses";
+import { abis } from "../../../scripts/constant/abis";
+import {ConnectV2ZeroExPolygon__factory } from "../../../typechain";
+import er20abi from "../../../scripts/constant/abi/basics/erc20.json";
+import type { Signer, Contract } from "ethers";
+
+describe("ZeroEx", function() {
+  const connectorName = "zeroEx-test";
+
+  let dsaWallet0: Contract;
+  let wallet0: Signer, wallet1: Signer;
+  let masterSigner: Signer;
+  let instaConnectorsV2: Contract;
+  let connector: Contract;
+
+  before(async () => {
+    await hre.network.provider.request({
+      method: "hardhat_reset",
+      params: [
+        {
+          forking: {
+            // @ts-ignore
+            jsonRpcUrl: hre.config.networks.hardhat.forking.url,
+          },
+        },
+      ],
+    });
+    [wallet0, wallet1] = await ethers.getSigners();
+
+    masterSigner = await getMasterSigner();
+    instaConnectorsV2 = await ethers.getContractAt(
+      abis.core.connectorsV2,
+      addresses.core.connectorsV2
+    );
+    connector = await deployAndEnableConnector({
+      connectorName,
+      contractArtifact: ConnectV2ZeroExPolygon__factory,
+      signer: masterSigner,
+      connectors: instaConnectorsV2,
+    });
+    console.log("Connector address", connector.address);
+  });
+
+  it("Should have contracts deployed.", async function() {
+    expect(!!instaConnectorsV2.address).to.be.true;
+    expect(!!connector.address).to.be.true;
+    expect(!!(await masterSigner.getAddress())).to.be.true;
+  });
+
+  describe("DSA wallet setup", function() {
+    it("Should build DSA v2", async function() {
+      dsaWallet0 = await buildDSAv2(await wallet0.getAddress());
+      expect(!!dsaWallet0.address).to.be.true;
+    });
+
+    it("Deposit matic into DSA wallet", async function() {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10"),
+      });
+
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
+        ethers.utils.parseEther("10")
+      );
+    });
+  });
+
+  describe("Main", function() {
+    it("should swap the tokens", async function() {
+      let buyTokenAmount: any;
+      async function getArg() {
+        // const slippage = 0.5;
+        /* matic -> dai */
+        const sellTokenAddress = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"; // matic,  decimals 18
+        const sellTokenDecimals = 18;
+        const buyTokenAddress = "0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063"; // dai, decimals 18
+        const buyTokenDecimals = 18;
+        const amount = 1;
+
+        const srcAmount = new BigNumber(amount)
+          .times(new BigNumber(10).pow(sellTokenDecimals))
+          .toFixed(0);
+
+        let url = `https://polygon.api.0x.org/swap/v1/quote`;
+
+        const params = {
+          buyToken: "DAI",
+          sellToken: "MATIC",
+          sellAmount: "1000000000000000000", // Always denominated in wei
+        };
+
+        const response = await axios
+          .get(url, { params: params })
+          .then((data: any) => data);
+
+        buyTokenAmount = response.data.buyAmount;
+        const calldata = response.data.data;
+
+        let caculateUnitAmt = () => {
+          const buyTokenAmountRes = new BigNumber(buyTokenAmount)
+            .dividedBy(new BigNumber(10).pow(buyTokenDecimals))
+            .toFixed(8);
+
+          let unitAmt: any = new BigNumber(buyTokenAmountRes).dividedBy(
+            new BigNumber(amount)
+          );
+
+          unitAmt = unitAmt.multipliedBy((100 - 0.3) / 100);
+          unitAmt = unitAmt.multipliedBy(1e18).toFixed(0);
+          return unitAmt;
+        };
+        let unitAmt = caculateUnitAmt();
+
+        return [
+          buyTokenAddress,
+          sellTokenAddress,
+          srcAmount,
+          unitAmt,
+          calldata,
+          0,
+        ];
+      }
+
+      let arg = await getArg();
+      const spells = [
+        {
+          connector: connectorName,
+          method: "swap",
+          args: arg,
+        },
+      ];
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), await wallet1.getAddress());
+      const receipt = await tx.wait();
+    
+      const daiToken = await ethers.getContractAt(
+        er20abi,
+        "0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063" // dai address
+      );
+
+      expect(await daiToken.balanceOf(dsaWallet0.address)).to.be.gte(
+        buyTokenAmount
+      );
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.lte(
+        ethers.utils.parseEther("9")
+      );
+    });
+  });
+});