diff --git a/contracts/arbitrum/connectors/1inch/1inch-v5/events.sol b/contracts/arbitrum/connectors/1inch/1inch-v5/events.sol
new file mode 100644
index 00000000..14cd1873
--- /dev/null
+++ b/contracts/arbitrum/connectors/1inch/1inch-v5/events.sol
@@ -0,0 +1,13 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSell(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
\ No newline at end of file
diff --git a/contracts/arbitrum/connectors/1inch/1inch-v5/helpers.sol b/contracts/arbitrum/connectors/1inch/1inch-v5/helpers.sol
new file mode 100644
index 00000000..7237621d
--- /dev/null
+++ b/contracts/arbitrum/connectors/1inch/1inch-v5/helpers.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+import { DSMath } from "../../../common/math.sol";
+import { Basic } from "../../../common/basic.sol";
+
+
+abstract contract Helpers is DSMath, Basic {
+    /**
+     * @dev 1Inch Router v5 Address
+     */
+address internal constant oneInchAddr = 0x1111111254EEB25477B68fb85Ed929f73A960582;
+}
\ No newline at end of file
diff --git a/contracts/arbitrum/connectors/1inch/1inch-v5/interface.sol b/contracts/arbitrum/connectors/1inch/1inch-v5/interface.sol
new file mode 100644
index 00000000..f63b509b
--- /dev/null
+++ b/contracts/arbitrum/connectors/1inch/1inch-v5/interface.sol
@@ -0,0 +1,31 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+
+interface OneInchInterace {
+    function swap(
+        TokenInterface fromToken,
+        TokenInterface toToken,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        uint256 guaranteedAmount,
+        address payable referrer,
+        address[] calldata callAddresses,
+        bytes calldata callDataConcat,
+        uint256[] calldata starts,
+        uint256[] calldata gasLimitsAndValues
+    )
+    external
+    payable
+    returns (uint256 returnAmount);
+}
+
+struct OneInchData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint _sellAmt;
+    uint _buyAmt;
+    uint unitAmt;
+    bytes callData;
+}
\ No newline at end of file
diff --git a/contracts/arbitrum/connectors/1inch/1inch-v5/main.sol b/contracts/arbitrum/connectors/1inch/1inch-v5/main.sol
new file mode 100644
index 00000000..9e90c3c0
--- /dev/null
+++ b/contracts/arbitrum/connectors/1inch/1inch-v5/main.sol
@@ -0,0 +1,113 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 1InchV5.
+ * @dev On-chain DEX Aggregator.
+ */
+
+// import files from common directory
+import { TokenInterface , MemoryInterface } from "../../../common/interfaces.sol";
+import { Stores } from "../../../common/stores.sol";
+import { OneInchInterace, OneInchData } from "./interface.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract OneInchResolver is Helpers, Events {
+
+
+    /**
+     * @dev 1inch API swap handler
+     * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
+     * @param ethAmt - Eth to swap for .value()
+     */
+    function oneInchSwap(
+        OneInchData memory oneInchData,
+        uint ethAmt
+    ) internal returns (uint buyAmt) {
+        TokenInterface buyToken = oneInchData.buyToken;
+        (uint _buyDec, uint _sellDec) = getTokensDec(buyToken, oneInchData.sellToken);
+        uint _sellAmt18 = convertTo18(_sellDec, oneInchData._sellAmt);
+        uint _slippageAmt = convert18ToDec(_buyDec, wmul(oneInchData.unitAmt, _sellAmt18));
+
+        uint initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = oneInchAddr.call{value: ethAmt}(oneInchData.callData);
+        if (!success) revert("1Inch-swap-failed");
+
+        uint finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+}
+
+abstract contract OneInchResolverHelpers is OneInchResolver {
+
+    /**
+     * @dev Gets the swapping data from 1inch's API.
+     * @param oneInchData Struct with multiple swap data defined in interfaces.sol 
+     * @param setId Set token amount at this ID in `InstaMemory` Contract.
+     */
+    function _sell(
+        OneInchData memory oneInchData,
+        uint setId
+    ) internal returns (OneInchData memory) {
+        TokenInterface _sellAddr = oneInchData.sellToken;
+
+        uint ethAmt;
+        if (address(_sellAddr) == ethAddr) {
+            ethAmt = oneInchData._sellAmt;
+        } else {
+            approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
+        }
+
+        oneInchData._buyAmt = oneInchSwap(oneInchData, ethAmt);
+        setUint(setId, oneInchData._buyAmt);
+
+        return oneInchData;
+    }
+}
+
+abstract contract OneInch is OneInchResolverHelpers {
+    /**
+     * @dev Sell ETH/ERC20_Token using 1Inch.
+     * @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 1inch API.
+     * @param setId ID stores the amount of token brought.
+    */
+    function sell(
+        address buyAddr,
+        address sellAddr,
+        uint sellAmt,
+        uint unitAmt,
+        bytes calldata callData,
+        uint setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        OneInchData memory oneInchData = OneInchData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        oneInchData = _sell(oneInchData, setId);
+
+        _eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(buyAddr, sellAddr, oneInchData._buyAmt, oneInchData._sellAmt, 0, setId);
+    }
+}
+
+contract ConnectV2OneInchV5Arbitrum is OneInch {
+    string public name = "1Inch-v5";
+}
diff --git a/contracts/avalanche/connectors/1inch-v5/events.sol b/contracts/avalanche/connectors/1inch-v5/events.sol
new file mode 100644
index 00000000..14cd1873
--- /dev/null
+++ b/contracts/avalanche/connectors/1inch-v5/events.sol
@@ -0,0 +1,13 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSell(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
\ No newline at end of file
diff --git a/contracts/avalanche/connectors/1inch-v5/helpers.sol b/contracts/avalanche/connectors/1inch-v5/helpers.sol
new file mode 100644
index 00000000..250f7b84
--- /dev/null
+++ b/contracts/avalanche/connectors/1inch-v5/helpers.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../common/interfaces.sol";
+import { DSMath } from "../../common/math.sol";
+import { Basic } from "../../common/basic.sol";
+
+
+abstract contract Helpers is DSMath, Basic {
+    /**
+     * @dev 1Inch Router v5 Address
+     */
+   address internal constant oneInchAddr = 0x1111111254EEB25477B68fb85Ed929f73A960582;
+}
\ No newline at end of file
diff --git a/contracts/avalanche/connectors/1inch-v5/interface.sol b/contracts/avalanche/connectors/1inch-v5/interface.sol
new file mode 100644
index 00000000..2575866e
--- /dev/null
+++ b/contracts/avalanche/connectors/1inch-v5/interface.sol
@@ -0,0 +1,31 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../common/interfaces.sol";
+
+interface OneInchInterace {
+    function swap(
+        TokenInterface fromToken,
+        TokenInterface toToken,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        uint256 guaranteedAmount,
+        address payable referrer,
+        address[] calldata callAddresses,
+        bytes calldata callDataConcat,
+        uint256[] calldata starts,
+        uint256[] calldata gasLimitsAndValues
+    )
+    external
+    payable
+    returns (uint256 returnAmount);
+}
+
+struct OneInchData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint _sellAmt;
+    uint _buyAmt;
+    uint unitAmt;
+    bytes callData;
+}
\ No newline at end of file
diff --git a/contracts/avalanche/connectors/1inch-v5/main.sol b/contracts/avalanche/connectors/1inch-v5/main.sol
new file mode 100644
index 00000000..37e22525
--- /dev/null
+++ b/contracts/avalanche/connectors/1inch-v5/main.sol
@@ -0,0 +1,112 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 1InchV5.
+ * @dev On-chain DEX Aggregator.
+ */
+
+// import files from common directory
+import { TokenInterface , MemoryInterface } from "../../common/interfaces.sol";
+import { Stores } from "../../common/stores.sol";
+import { OneInchInterace, OneInchData } from "./interface.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract OneInchResolver is Helpers, Events {
+    /**
+     * @dev 1inch API swap handler
+     * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
+     * @param avaxAmt - Avax to swap for .value()
+     */
+    function oneInchSwap(
+        OneInchData memory oneInchData,
+        uint avaxAmt
+    ) internal returns (uint buyAmt) {
+        TokenInterface buyToken = oneInchData.buyToken;
+        (uint _buyDec, uint _sellDec) = getTokensDec(buyToken, oneInchData.sellToken);
+        uint _sellAmt18 = convertTo18(_sellDec, oneInchData._sellAmt);
+        uint _slippageAmt = convert18ToDec(_buyDec, wmul(oneInchData.unitAmt, _sellAmt18));
+
+        uint initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = oneInchAddr.call{value: avaxAmt}(oneInchData.callData);
+        if (!success) revert("1Inch-swap-failed");
+
+        uint finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+}
+
+abstract contract OneInchResolverHelpers is OneInchResolver {
+
+    /**
+     * @dev Gets the swapping data from 1inch's API.
+     * @param oneInchData Struct with multiple swap data defined in interfaces.sol 
+     * @param setId Set token amount at this ID in `InstaMemory` Contract.
+     */
+    function _sell(
+        OneInchData memory oneInchData,
+        uint setId
+    ) internal returns (OneInchData memory) {
+        TokenInterface _sellAddr = oneInchData.sellToken;
+
+        uint avaxAmt;
+        if (address(_sellAddr) == avaxAddr) {
+            avaxAmt = oneInchData._sellAmt;
+        } else {
+            approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
+        }
+
+        oneInchData._buyAmt = oneInchSwap(oneInchData, avaxAmt);
+        setUint(setId, oneInchData._buyAmt);
+
+        return oneInchData;
+
+    }
+}
+
+abstract contract OneInch is OneInchResolverHelpers {
+    /**
+     * @dev Sell Avax/ERC20_Token using 1Inch.
+     * @notice Swap tokens from exchanges like kyber, 0x etc, with calculation done off-chain.
+     * @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 1inch API.
+     * @param setId ID stores the amount of token brought.
+    */
+    function sell(
+        address buyAddr,
+        address sellAddr,
+        uint sellAmt,
+        uint unitAmt,
+        bytes calldata callData,
+        uint setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        OneInchData memory oneInchData = OneInchData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        oneInchData = _sell(oneInchData, setId);
+
+        _eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(buyAddr, sellAddr, oneInchData._buyAmt, oneInchData._sellAmt, 0, setId);
+    }
+}
+
+contract ConnectV2OneInchV5Avalanche is OneInch {
+    string public name = "1Inch-v5";
+}
diff --git a/contracts/fantom/connectors/1inch-v5/events.sol b/contracts/fantom/connectors/1inch-v5/events.sol
new file mode 100644
index 00000000..14cd1873
--- /dev/null
+++ b/contracts/fantom/connectors/1inch-v5/events.sol
@@ -0,0 +1,13 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSell(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
\ No newline at end of file
diff --git a/contracts/fantom/connectors/1inch-v5/helpers.sol b/contracts/fantom/connectors/1inch-v5/helpers.sol
new file mode 100644
index 00000000..5ad0bc5d
--- /dev/null
+++ b/contracts/fantom/connectors/1inch-v5/helpers.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../common/interfaces.sol";
+import { DSMath } from "../../common/math.sol";
+import { Basic } from "../../common/basic.sol";
+
+abstract contract Helpers is DSMath, Basic {
+	/**
+	 * @dev 1Inch Router v5 Address
+	 */
+	address internal constant oneInchAddr =
+		0x1111111254EEB25477B68fb85Ed929f73A960582;
+}
diff --git a/contracts/fantom/connectors/1inch-v5/interface.sol b/contracts/fantom/connectors/1inch-v5/interface.sol
new file mode 100644
index 00000000..be10db0e
--- /dev/null
+++ b/contracts/fantom/connectors/1inch-v5/interface.sol
@@ -0,0 +1,28 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../common/interfaces.sol";
+
+interface OneInchInterace {
+	function swap(
+		TokenInterface fromToken,
+		TokenInterface toToken,
+		uint256 fromTokenAmount,
+		uint256 minReturnAmount,
+		uint256 guaranteedAmount,
+		address payable referrer,
+		address[] calldata callAddresses,
+		bytes calldata callDataConcat,
+		uint256[] calldata starts,
+		uint256[] calldata gasLimitsAndValues
+	) external payable returns (uint256 returnAmount);
+}
+
+struct OneInchData {
+	TokenInterface sellToken;
+	TokenInterface buyToken;
+	uint256 _sellAmt;
+	uint256 _buyAmt;
+	uint256 unitAmt;
+	bytes callData;
+}
diff --git a/contracts/fantom/connectors/1inch-v5/main.sol b/contracts/fantom/connectors/1inch-v5/main.sol
new file mode 100644
index 00000000..50ca28f3
--- /dev/null
+++ b/contracts/fantom/connectors/1inch-v5/main.sol
@@ -0,0 +1,132 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 1InchV5.
+ * @dev On-chain DEX Aggregator.
+ */
+
+// import files from common directory
+import { TokenInterface, MemoryInterface } from "../../common/interfaces.sol";
+import { Stores } from "../../common/stores.sol";
+import { OneInchInterace, OneInchData } from "./interface.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract OneInchResolver is Helpers, Events {
+	/**
+	 * @dev 1inch API swap handler
+	 * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
+	 * @param ftmAmt - Ftm to swap for .value()
+	 */
+	function oneInchSwap(OneInchData memory oneInchData, uint256 ftmAmt)
+		internal
+		returns (uint256 buyAmt)
+	{
+		TokenInterface buyToken = oneInchData.buyToken;
+		(uint256 _buyDec, uint256 _sellDec) = getTokensDec(
+			buyToken,
+			oneInchData.sellToken
+		);
+		uint256 _sellAmt18 = convertTo18(_sellDec, oneInchData._sellAmt);
+		uint256 _slippageAmt = convert18ToDec(
+			_buyDec,
+			wmul(oneInchData.unitAmt, _sellAmt18)
+		);
+
+		uint256 initalBal = getTokenBal(buyToken);
+
+		// solium-disable-next-line security/no-call-value
+		(bool success, ) = oneInchAddr.call{ value: ftmAmt }(
+			oneInchData.callData
+		);
+		if (!success) revert("1Inch-swap-failed");
+
+		uint256 finalBal = getTokenBal(buyToken);
+
+		buyAmt = sub(finalBal, initalBal);
+
+		require(_slippageAmt <= buyAmt, "Too much slippage");
+	}
+}
+
+abstract contract OneInchResolverHelpers is OneInchResolver {
+	/**
+	 * @dev Gets the swapping data from 1inch's API.
+	 * @param oneInchData Struct with multiple swap data defined in interfaces.sol
+	 * @param setId Set token amount at this ID in `InstaMemory` Contract.
+	 */
+	function _sell(OneInchData memory oneInchData, uint256 setId)
+		internal
+		returns (OneInchData memory)
+	{
+		TokenInterface _sellAddr = oneInchData.sellToken;
+
+		uint256 ftmAmt;
+		if (address(_sellAddr) == ftmAddr) {
+			ftmAmt = oneInchData._sellAmt;
+		} else {
+			approve(
+				TokenInterface(_sellAddr),
+				oneInchAddr,
+				oneInchData._sellAmt
+			);
+		}
+
+		oneInchData._buyAmt = oneInchSwap(oneInchData, ftmAmt);
+		setUint(setId, oneInchData._buyAmt);
+
+		return oneInchData;
+	}
+}
+
+abstract contract OneInch is OneInchResolverHelpers {
+	/**
+	 * @dev Sell FTM/ERC20_Token using 1Inch.
+	 * @notice Swap tokens from exchanges like kyber, 0x etc, with calculation done off-chain.
+	 * @param buyAddr The address of the token to buy.(For FTM: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+	 * @param sellAddr The address of the token to sell.(For FTM: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+	 * @param sellAmt The amount of the token to sell.
+	 * @param unitAmt The amount of buyAmt/sellAmt with slippage.
+	 * @param callData Data from 1inch API.
+	 * @param setId ID stores the amount of token brought.
+	 */
+	function sell(
+		address buyAddr,
+		address sellAddr,
+		uint256 sellAmt,
+		uint256 unitAmt,
+		bytes calldata callData,
+		uint256 setId
+	)
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		OneInchData memory oneInchData = OneInchData({
+			buyToken: TokenInterface(buyAddr),
+			sellToken: TokenInterface(sellAddr),
+			unitAmt: unitAmt,
+			callData: callData,
+			_sellAmt: sellAmt,
+			_buyAmt: 0
+		});
+
+		oneInchData = _sell(oneInchData, setId);
+
+		_eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
+		_eventParam = abi.encode(
+			buyAddr,
+			sellAddr,
+			oneInchData._buyAmt,
+			oneInchData._sellAmt,
+			0,
+			setId
+		);
+	}
+}
+
+contract ConnectV2OneInchV5Fantom is OneInch {
+	string public name = "1Inch-v5";
+}
diff --git a/contracts/mainnet/connectors/1inch/1inch-v5/events.sol b/contracts/mainnet/connectors/1inch/1inch-v5/events.sol
new file mode 100644
index 00000000..14cd1873
--- /dev/null
+++ b/contracts/mainnet/connectors/1inch/1inch-v5/events.sol
@@ -0,0 +1,13 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSell(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
\ No newline at end of file
diff --git a/contracts/mainnet/connectors/1inch/1inch-v5/helpers.sol b/contracts/mainnet/connectors/1inch/1inch-v5/helpers.sol
new file mode 100644
index 00000000..c0893ecc
--- /dev/null
+++ b/contracts/mainnet/connectors/1inch/1inch-v5/helpers.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+import { DSMath } from "../../../common/math.sol";
+import { Basic } from "../../../common/basic.sol";
+
+
+abstract contract Helpers is DSMath, Basic {
+    /**
+     * @dev 1Inch Router v5 Address
+     */
+   address internal constant oneInchAddr = 0x1111111254EEB25477B68fb85Ed929f73A960582;
+}
\ No newline at end of file
diff --git a/contracts/mainnet/connectors/1inch/1inch-v5/interface.sol b/contracts/mainnet/connectors/1inch/1inch-v5/interface.sol
new file mode 100644
index 00000000..f63b509b
--- /dev/null
+++ b/contracts/mainnet/connectors/1inch/1inch-v5/interface.sol
@@ -0,0 +1,31 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+
+interface OneInchInterace {
+    function swap(
+        TokenInterface fromToken,
+        TokenInterface toToken,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        uint256 guaranteedAmount,
+        address payable referrer,
+        address[] calldata callAddresses,
+        bytes calldata callDataConcat,
+        uint256[] calldata starts,
+        uint256[] calldata gasLimitsAndValues
+    )
+    external
+    payable
+    returns (uint256 returnAmount);
+}
+
+struct OneInchData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint _sellAmt;
+    uint _buyAmt;
+    uint unitAmt;
+    bytes callData;
+}
\ No newline at end of file
diff --git a/contracts/mainnet/connectors/1inch/1inch-v5/main.sol b/contracts/mainnet/connectors/1inch/1inch-v5/main.sol
new file mode 100644
index 00000000..6a962b2a
--- /dev/null
+++ b/contracts/mainnet/connectors/1inch/1inch-v5/main.sol
@@ -0,0 +1,112 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 1InchV5.
+ * @dev On-chain DEX Aggregator.
+ */
+
+// import files from common directory
+import { TokenInterface , MemoryInterface } from "../../../common/interfaces.sol";
+import { Stores } from "../../../common/stores.sol";
+import { OneInchInterace, OneInchData } from "./interface.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract OneInchResolver is Helpers, Events {
+    /**
+     * @dev 1inch API swap handler
+     * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
+     * @param ethAmt - Eth to swap for .value()
+     */
+    function oneInchSwap(
+        OneInchData memory oneInchData,
+        uint ethAmt
+    ) internal returns (uint buyAmt) {
+        TokenInterface buyToken = oneInchData.buyToken;
+        (uint _buyDec, uint _sellDec) = getTokensDec(buyToken, oneInchData.sellToken);
+        uint _sellAmt18 = convertTo18(_sellDec, oneInchData._sellAmt);
+        uint _slippageAmt = convert18ToDec(_buyDec, wmul(oneInchData.unitAmt, _sellAmt18));
+
+        uint initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = oneInchAddr.call{value: ethAmt}(oneInchData.callData);
+        if (!success) revert("1Inch-swap-failed");
+
+        uint finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+}
+
+abstract contract OneInchResolverHelpers is OneInchResolver {
+
+    /**
+     * @dev Gets the swapping data from 1inch's API.
+     * @param oneInchData Struct with multiple swap data defined in interfaces.sol 
+     * @param setId Set token amount at this ID in `InstaMemory` Contract.
+     */
+    function _sell(
+        OneInchData memory oneInchData,
+        uint setId
+    ) internal returns (OneInchData memory) {
+        TokenInterface _sellAddr = oneInchData.sellToken;
+
+        uint ethAmt;
+        if (address(_sellAddr) == ethAddr) {
+            ethAmt = oneInchData._sellAmt;
+        } else {
+            approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
+        }
+
+        oneInchData._buyAmt = oneInchSwap(oneInchData, ethAmt);
+        setUint(setId, oneInchData._buyAmt);
+
+        return oneInchData;
+
+    }
+}
+
+abstract contract OneInch is OneInchResolverHelpers {
+    /**
+     * @dev Sell ETH/ERC20_Token using 1Inch.
+     * @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 1inch API.
+     * @param setId ID stores the amount of token brought.
+    */
+    function sell(
+        address buyAddr,
+        address sellAddr,
+        uint sellAmt,
+        uint unitAmt,
+        bytes calldata callData,
+        uint setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        OneInchData memory oneInchData = OneInchData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        oneInchData = _sell(oneInchData, setId);
+
+        _eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(buyAddr, sellAddr, oneInchData._buyAmt, oneInchData._sellAmt, 0, setId);
+    }
+}
+
+contract ConnectV2OneInchV5 is OneInch {
+    string public name = "1Inch-v5";
+}
diff --git a/contracts/optimism/connectors/1inch/1inch-v5/events.sol b/contracts/optimism/connectors/1inch/1inch-v5/events.sol
new file mode 100644
index 00000000..14cd1873
--- /dev/null
+++ b/contracts/optimism/connectors/1inch/1inch-v5/events.sol
@@ -0,0 +1,13 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSell(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
\ No newline at end of file
diff --git a/contracts/optimism/connectors/1inch/1inch-v5/helpers.sol b/contracts/optimism/connectors/1inch/1inch-v5/helpers.sol
new file mode 100644
index 00000000..c0893ecc
--- /dev/null
+++ b/contracts/optimism/connectors/1inch/1inch-v5/helpers.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+import { DSMath } from "../../../common/math.sol";
+import { Basic } from "../../../common/basic.sol";
+
+
+abstract contract Helpers is DSMath, Basic {
+    /**
+     * @dev 1Inch Router v5 Address
+     */
+   address internal constant oneInchAddr = 0x1111111254EEB25477B68fb85Ed929f73A960582;
+}
\ No newline at end of file
diff --git a/contracts/optimism/connectors/1inch/1inch-v5/interface.sol b/contracts/optimism/connectors/1inch/1inch-v5/interface.sol
new file mode 100644
index 00000000..f63b509b
--- /dev/null
+++ b/contracts/optimism/connectors/1inch/1inch-v5/interface.sol
@@ -0,0 +1,31 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+
+interface OneInchInterace {
+    function swap(
+        TokenInterface fromToken,
+        TokenInterface toToken,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        uint256 guaranteedAmount,
+        address payable referrer,
+        address[] calldata callAddresses,
+        bytes calldata callDataConcat,
+        uint256[] calldata starts,
+        uint256[] calldata gasLimitsAndValues
+    )
+    external
+    payable
+    returns (uint256 returnAmount);
+}
+
+struct OneInchData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint _sellAmt;
+    uint _buyAmt;
+    uint unitAmt;
+    bytes callData;
+}
\ No newline at end of file
diff --git a/contracts/optimism/connectors/1inch/1inch-v5/main.sol b/contracts/optimism/connectors/1inch/1inch-v5/main.sol
new file mode 100644
index 00000000..91abe3cb
--- /dev/null
+++ b/contracts/optimism/connectors/1inch/1inch-v5/main.sol
@@ -0,0 +1,112 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 1InchV5.
+ * @dev On-chain DEX Aggregator.
+ */
+
+// import files from common directory
+import { TokenInterface , MemoryInterface } from "../../../common/interfaces.sol";
+import { Stores } from "../../../common/stores.sol";
+import { OneInchInterace, OneInchData } from "./interface.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract OneInchResolver is Helpers, Events {
+    /**
+     * @dev 1inch API swap handler
+     * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
+     * @param ethAmt - Eth to swap for .value()
+     */
+    function oneInchSwap(
+        OneInchData memory oneInchData,
+        uint ethAmt
+    ) internal returns (uint buyAmt) {
+        TokenInterface buyToken = oneInchData.buyToken;
+        (uint _buyDec, uint _sellDec) = getTokensDec(buyToken, oneInchData.sellToken);
+        uint _sellAmt18 = convertTo18(_sellDec, oneInchData._sellAmt);
+        uint _slippageAmt = convert18ToDec(_buyDec, wmul(oneInchData.unitAmt, _sellAmt18));
+
+        uint initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = oneInchAddr.call{value: ethAmt}(oneInchData.callData);
+        if (!success) revert("1Inch-swap-failed");
+
+        uint finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+}
+
+abstract contract OneInchResolverHelpers is OneInchResolver {
+
+    /**
+     * @dev Gets the swapping data from 1inch's API.
+     * @param oneInchData Struct with multiple swap data defined in interfaces.sol 
+     * @param setId Set token amount at this ID in `InstaMemory` Contract.
+     */
+    function _sell(
+        OneInchData memory oneInchData,
+        uint setId
+    ) internal returns (OneInchData memory) {
+        TokenInterface _sellAddr = oneInchData.sellToken;
+
+        uint ethAmt;
+        if (address(_sellAddr) == ethAddr) {
+            ethAmt = oneInchData._sellAmt;
+        } else {
+            approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
+        }
+
+        oneInchData._buyAmt = oneInchSwap(oneInchData, ethAmt);
+        setUint(setId, oneInchData._buyAmt);
+
+        return oneInchData;
+
+    }
+}
+
+abstract contract OneInch is OneInchResolverHelpers {
+    /**
+     * @dev Sell ETH/ERC20_Token using 1Inch.
+     * @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 1inch API.
+     * @param setId ID stores the amount of token brought.
+    */
+    function sell(
+        address buyAddr,
+        address sellAddr,
+        uint sellAmt,
+        uint unitAmt,
+        bytes calldata callData,
+        uint setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        OneInchData memory oneInchData = OneInchData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        oneInchData = _sell(oneInchData, setId);
+
+        _eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(buyAddr, sellAddr, oneInchData._buyAmt, oneInchData._sellAmt, 0, setId);
+    }
+}
+
+contract ConnectV2OneInchV5Optimism is OneInch {
+    string public name = "1Inch-v5";
+}
diff --git a/contracts/polygon/connectors/1inch/1inch-v5/events.sol b/contracts/polygon/connectors/1inch/1inch-v5/events.sol
new file mode 100644
index 00000000..14cd1873
--- /dev/null
+++ b/contracts/polygon/connectors/1inch/1inch-v5/events.sol
@@ -0,0 +1,13 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogSell(
+        address indexed buyToken,
+        address indexed sellToken,
+        uint256 buyAmt,
+        uint256 sellAmt,
+        uint256 getId,
+        uint256 setId
+    );
+}
\ No newline at end of file
diff --git a/contracts/polygon/connectors/1inch/1inch-v5/helpers.sol b/contracts/polygon/connectors/1inch/1inch-v5/helpers.sol
new file mode 100644
index 00000000..c0893ecc
--- /dev/null
+++ b/contracts/polygon/connectors/1inch/1inch-v5/helpers.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+import { DSMath } from "../../../common/math.sol";
+import { Basic } from "../../../common/basic.sol";
+
+
+abstract contract Helpers is DSMath, Basic {
+    /**
+     * @dev 1Inch Router v5 Address
+     */
+   address internal constant oneInchAddr = 0x1111111254EEB25477B68fb85Ed929f73A960582;
+}
\ No newline at end of file
diff --git a/contracts/polygon/connectors/1inch/1inch-v5/interface.sol b/contracts/polygon/connectors/1inch/1inch-v5/interface.sol
new file mode 100644
index 00000000..f63b509b
--- /dev/null
+++ b/contracts/polygon/connectors/1inch/1inch-v5/interface.sol
@@ -0,0 +1,31 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+
+interface OneInchInterace {
+    function swap(
+        TokenInterface fromToken,
+        TokenInterface toToken,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        uint256 guaranteedAmount,
+        address payable referrer,
+        address[] calldata callAddresses,
+        bytes calldata callDataConcat,
+        uint256[] calldata starts,
+        uint256[] calldata gasLimitsAndValues
+    )
+    external
+    payable
+    returns (uint256 returnAmount);
+}
+
+struct OneInchData {
+    TokenInterface sellToken;
+    TokenInterface buyToken;
+    uint _sellAmt;
+    uint _buyAmt;
+    uint unitAmt;
+    bytes callData;
+}
\ No newline at end of file
diff --git a/contracts/polygon/connectors/1inch/1inch-v5/main.sol b/contracts/polygon/connectors/1inch/1inch-v5/main.sol
new file mode 100644
index 00000000..4f7cf4e5
--- /dev/null
+++ b/contracts/polygon/connectors/1inch/1inch-v5/main.sol
@@ -0,0 +1,116 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title 1InchV5.
+ * @dev On-chain DEX Aggregator.
+ */
+
+// import files from common directory
+import { TokenInterface , MemoryInterface } from "../../../common/interfaces.sol";
+import { Stores } from "../../../common/stores.sol";
+import { OneInchInterace, OneInchData } from "./interface.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract OneInchResolver is Helpers, Events {
+ 
+
+    /**
+     * @dev 1inch API swap handler
+     * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
+     * @param ethAmt - Eth to swap for .value()
+     */
+    function oneInchSwap(
+        OneInchData memory oneInchData,
+        uint ethAmt
+    ) internal returns (uint buyAmt) {
+        TokenInterface buyToken = oneInchData.buyToken;
+        (uint _buyDec, uint _sellDec) = getTokensDec(buyToken, oneInchData.sellToken);
+        uint _sellAmt18 = convertTo18(_sellDec, oneInchData._sellAmt);
+        uint _slippageAmt = convert18ToDec(_buyDec, wmul(oneInchData.unitAmt, _sellAmt18));
+
+        uint initalBal = getTokenBal(buyToken);
+
+        // solium-disable-next-line security/no-call-value
+        (bool success, ) = oneInchAddr.call{value: ethAmt}(oneInchData.callData);
+        if (!success) revert("1Inch-swap-failed");
+
+        uint finalBal = getTokenBal(buyToken);
+
+        buyAmt = sub(finalBal, initalBal);
+
+        require(_slippageAmt <= buyAmt, "Too much slippage");
+    }
+
+}
+
+abstract contract OneInchResolverHelpers is OneInchResolver {
+
+    /**
+     * @dev Gets the swapping data from 1inch's API.
+     * @param oneInchData Struct with multiple swap data defined in interfaces.sol 
+     * @param setId Set token amount at this ID in `InstaMemory` Contract.
+     */
+    function _sell(
+        OneInchData memory oneInchData,
+        uint setId
+    ) internal returns (OneInchData memory) {
+        TokenInterface _sellAddr = oneInchData.sellToken;
+
+        uint ethAmt;
+        if (address(_sellAddr) == maticAddr) {
+            ethAmt = oneInchData._sellAmt;
+        } else {
+            approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
+        }
+
+
+        oneInchData._buyAmt = oneInchSwap(oneInchData, ethAmt);
+        setUint(setId, oneInchData._buyAmt);
+
+        return oneInchData;
+
+        
+    }
+}
+
+abstract contract OneInch is OneInchResolverHelpers {
+    /**
+     * @dev Sell ETH/ERC20_Token using 1Inch.
+     * @notice Swap tokens from exchanges like kyber, 0x etc, with calculation done off-chain.
+     * @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 1inch API.
+     * @param setId ID stores the amount of token brought.
+    */
+    function sell(
+        address buyAddr,
+        address sellAddr,
+        uint sellAmt,
+        uint unitAmt,
+        bytes calldata callData,
+        uint setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        OneInchData memory oneInchData = OneInchData({
+            buyToken: TokenInterface(buyAddr),
+            sellToken: TokenInterface(sellAddr),
+            unitAmt: unitAmt,
+            callData: callData,
+            _sellAmt: sellAmt,
+            _buyAmt: 0
+        });
+
+        oneInchData = _sell(oneInchData, setId);
+
+        _eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(buyAddr, sellAddr, oneInchData._buyAmt, oneInchData._sellAmt, 0, setId);
+    }
+}
+
+contract ConnectV2OneInchV5Polygon is OneInch {
+    string public name = "1Inch-v5";
+}