# Send Contract {% embed url="" %} ## Parameters * `contractAddress` - `string` Contract address to interact with * `functionName` - `string` Smart contract function to interact with * `abi` - `Array` (Optional) ABI of the contract to call * `params` - `Array` (Optional) Params to call the smart contract function with * `valueInWei` - `string` (Optional) Amount of wei to send * `gasLimit` - `string` (Optional) Gas limit for the function call * `chain` - `Object` used to ensure the user is on the correct chain (follows the [MetaMask specification](https://docs.metamask.io/guide/rpc-api.html#unrestricted-methods)) * `chainId` - `string` Base 10 string matching the chain id on [Chainlist](https://chainlist.org/) * `chainMetadata` (Optional) - `Object` used to add the chain if the user does not have the chain added to their wallet * `chainName` - `string` * `nativeCurrency` - `Object` * `name` - `string` is the currency's name * `symbol` - `string` 2-6 characters long symbol for the chain * `decimals` - `18` * `rpcUrls` - `Array` is an array of rpc node urls that can be used to make requests. We recommend selecting a few from the listing on [Chainlist](https://chainlist.org/) * `blockExplorerUrls` (Optional) - `Array` is an array of block explorers that can be used with the chain * `iconUrls` (Optional) - `Array` is currently unused by MetaMask ## Request This request sends ERC-20 tokens. {% tabs %} {% tab title="curl" %} ```bash curl --location --request POST "localhost:9680/sendContract" \ --header 'Content-Type: application/json' \ --data-raw '{ "contractAddress": "0xc657c7ca0f06b9c241a080AC0d6625923Ef9f1aF", "functionName": "transfer", "params": ["0x638105AA1B69406560f6428aEFACe3DB9da83c64", "1000000000000000000"], "abi": [{ "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transfer", "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }], "stateMutability": "nonpayable", "type": "function" }], "valueInWei": "0", "chain": { "chainId": "11155111" } }' ``` {% endtab %} {% tab title="Unity" %} ```csharp using System.Collections; using UnityEngine; using UnityEngine.Networking; public class SendContract: MonoBehaviour { void Start() { StartCoroutine(Send()); } private IEnumerator Send() { string jsonString = "{ \"contractAddress\": \"0x8a9f58dea0cf3d92dd8963f5a0a4c7aa9fa76642\", \"functionName\": \"transfer\", \"params\": [\"0x638105AA1B69406560f6428aEFACe3DB9da83c64\", \"1230000000000000000\"], \"abi\": [{ \"inputs\": [ { \"internalType\": \"address\", \"name\": \"to\", \"type\": \"address\" }, { \"internalType\": \"uint256\", \"name\": \"amount\", \"type\": \"uint256\" } ], \"name\": \"transfer\", \"outputs\": [{ \"internalType\": \"bool\", \"name\": \"\", \"type\": \"bool\" }], \"stateMutability\": \"nonpayable\", \"type\": \"function\" }], \"valueInWei\": \"0\", \"chain\": { \"chainId\": \"5\" } }"; byte[] jsonBytes = System.Text.Encoding.UTF8.GetBytes(jsonString); UnityWebRequest request = new UnityWebRequest("localhost:9680/sendContract", "POST"); request.uploadHandler = new UploadHandlerRaw(jsonBytes); request.downloadHandler = new DownloadHandlerBuffer(); request.SetRequestHeader("Content-Type", "application/json"); yield return request.SendWebRequest(); Debug.Log(request.error); string balanceHex = request.downloadHandler.text; Debug.Log(balanceHex); } } ``` {% endtab %} {% tab title="Unreal Blueprints" %} If you have the HyperPlay plugin installed, copy and paste the following into a Blueprint Graph for an example of how to send ERC20 tokens using the $FAU ERC20 contract deployed at 0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc on Goerli. ``` Begin Object Class=/Script/BlueprintGraph.K2Node_AsyncAction Name="K2Node_AsyncAction_16" ProxyFactoryFunctionName="SendContract" ProxyFactoryClass=Class'"/Script/web3Unreal.SendContract"' ProxyClass=Class'"/Script/web3Unreal.SendContract"' NodePosX=896 NodePosY=-288 NodeGuid=736B0028433ABAFA33026691B4CD1BBE CustomProperties Pin (PinId=38AA37C847D0B443D4D293BC78AE1C45,PinName="execute",PinToolTip="\nExec",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=DBABCEAE4BE7212FDE45CA87A5164BE1,PinName="then",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=FF9139A840D4343BEEDA949AADC0F72F,PinName="OnResponseOutput",PinFriendlyName=NSLOCTEXT("", "1966ADE04DEFB57440E3F5ADC289127C", "On Response Output"),PinToolTip="On Response Output",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=79B0FBA04193EB868B3E50954801E988,PinName="Response",PinToolTip="Response",Direction="EGPD_Output",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=31182EE9469AB941903076B47511EBCF,PinName="StatusCode",PinToolTip="Status Code",Direction="EGPD_Output",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=FBBCFB7F47F9D8C667951192E6A98CE8,PinName="WorldContextObject",PinToolTip="World Context Object\nObject Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'"/Script/CoreUObject.Object"',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=True,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=2061F93A49303CCDDE39F58467F27FF5,PinName="contractAddress",PinToolTip="Contract Address\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=8A22FDA84139B1DFDF8D81BD7C2854C1,PinName="functionName",PinToolTip="Function Name\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="transfer",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=968F51594CA2C970F9EFBF852CD3798B,PinName="abi",PinToolTip="Abi\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="[{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"DECIMALS\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"INITIAL_SUPPLY\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"burn\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"burnFrom\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"addMinter\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"renounceMinter\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"isMinter\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"},{\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"fallback\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MinterAdded\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MinterRemoved\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"}]",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=CEE087C54DD0A141448F8BB86ABAAB4A,PinName="params",PinToolTip="Params\nArray of Strings",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=Array,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,LinkedTo=(K2Node_MakeArray_1 BEE4822F4C280F86F45B7E9D7F4BDB5B,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=F33D7DF04277CAB9364D12BECCC6B328,PinName="gasLimit",PinToolTip="Gas Limit\nInteger",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="-1",AutogeneratedDefaultValue="-1",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=8CF144384AFEAD66DD508CA45BF43278,PinName="valueInWei",PinToolTip="Value in Wei\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="0",AutogeneratedDefaultValue="0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=A2B1BA0C4268DB23AE4B3E9C46C44C34,PinName="chainId",PinToolTip="Chain Id\nInteger",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="5",AutogeneratedDefaultValue="1",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/BlueprintGraph.K2Node_MakeArray Name="K2Node_MakeArray_1" NumInputs=2 NodePosX=896 NodePosY=-416 NodeGuid=2F2F421E44450CE8C0F62BB3E788BEC6 CustomProperties Pin (PinId=BEE4822F4C280F86F45B7E9D7F4BDB5B,PinName="Array",Direction="EGPD_Output",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=Array,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,LinkedTo=(K2Node_AsyncAction_16 CEE087C54DD0A141448F8BB86ABAAB4A,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=2EAC4E994F6545D4BE1767A36D0CF73E,PinName="[0]",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=3DE424384BF6B7230196A891E06B6AE8,PinName="[1]",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="1000000000000000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object ``` {% endtab %} {% tab title="Unreal Engine C++" %} ```cpp #include "HyperPlayUtils.h" #include "Endpoints/SendContract.h" void OnResponse(FString Response, int32 StatusCode) { const bool bWasSuccessful = HyperPlayUtils::StatusCodeIsSuccess(StatusCode); UE_LOG(LogTemp, Display, TEXT("SendContract Success: %s"), bWasSuccessful ? "true" : "false"); UE_LOG(LogTemp, Display, TEXT("SendContract Response: %s"), *Response); } int main(){ const FString address("0x62bb848ec84D08d55Ea70a19118300bae6658F18"); const FString amount("100000000000000000000"); TArray params; params.Add(address); params.Add(amount); USendContract* SendContractInstance = USendContract::SendContract(nullptr, "0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc", "transfer", "", params, -1, "", 5); SendContractInstance->GetOnCompletedDelegate().AddRaw(this, &OnResponse); SendContractInstance->Activate(); } ``` {% endtab %} {% endtabs %} ## Response The transaction hash {% tabs %} {% tab title="Response" %} ``` 0x1b8368d5b67a914a49c76984776849ee3c56a4ac28c92d98103ef18e7215ae2b ``` {% endtab %} {% tab title="Error" %} Errors will have an HTTP response status 500-599 ```json { "message": "error description here" } ``` {% endtab %} {% endtabs %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hyperplay.xyz/developer-docs/api/erc20-transfer-example.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.