Call a smart contract function with privateKey

Moralis General
#1

trying to call a smart contract function
expect the call to be signed without metamasks, but:

  1. metamask pops up and offers to sign the transaction
  2. when I try to sign I get the following error:
    <<MetaMask - RPC Error: [ethjs-query] while formatting outputs from RPC ‘{“value”:{“code”:-32603,“data”:{“code”:-32000,“message”:“transaction underpriced”}}}’ >>

what am I doing wrong?

code:

document.getElementById(“buy”).addEventListener(“click”, async function() {

const web3 = await Moralis.enableWeb3({ privateKey: "0058233e........e619e3f4795a" });

const contract  = "0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506"; // Sushiswap router  
const USDC      = "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174"; 
const USDT      = "0xc2132D05D31c914a87C6611C10748AEb04B58e8F"; 
let masterAdres = "0x8/////////////////8904";

const ABI = [................]; 
const options = { 
    contractAddress: contract, 
    functionName: "swapExactTokensForTokens", 
    abi: ABI, 
    params: { 
        amountIn:       1000000, 
        amountOutMin:   1, 
        path:           [USDC, USDT], 
        to:             masterAdres, 
        deadline:       Date.now() + 1000 * 60 * 5 
    }, 
}; 
try { 
    const res = await Moralis.executeFunction(options);  
    console.log("result", res); 
} 
catch (e) { 
    console.log(e);  
}

});

#2

you may have to do that from node js, you can look at this example:

#3

[quote=“How to use Moralis.transfer from nodejs [SOLVED], post:1, topic:11871”]
moralisSecret
[/quote]

what is “moralisSecret”? is it “CLI API Secret” from server details?

#4

no, it is something else that you can find in your account settings in admin interface

#5

is it Master Key or what?

#6

No, it is something else, not the master key. You will find it in admin interface in account settings.

#7

I tried that code, but the result is the same - a metamask window appears to confirm the transaction…

#8

You have to run that code in nodejs not in the browser

#9

received error:
Error: Invalid JSON RPC response: “Method not allowed”

#10

What is the code that you used?

#11 
Moralis = require('moralis/node');
const serverUrl = "https://xf6ve7e.........ver";
const appId = "dr............Kaxeub3zh";

x = async () => {
    console.log(Moralis.CoreManager.get("VERSION"));
    let moralisSecret = "KF................yaw5bwc9juLrI3Kgrti";
    await Moralis.start({ serverUrl, appId,  moralisSecret });
    await Moralis.enableWeb3({
        chainId: 0x89,
        privateKey:
           "0058233ed1.................e2e619e3f4795a", });
    const options = {
      type: "erc20",
      amount: Moralis.Units.Token("0.5", "18"),
      receiver: "0x3f76188FE26EA8197C6b4729f998B9Ea4425beb6",
      contractAddress: "0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270",
    };
    let result = await Moralis.transfer(options);
    console.log(result);
}

x();
#12

you have latest version of Moralis SDK?

you don’t need to specify serverUrl and appId for this

#13

updated SDK
but transfer didnt executed…
console:

{
  type: 2,
  chainId: 137,
  nonce: 5,
  maxPriorityFeePerGas: BigNumber { _hex: '0x59682f00', _isBigNumber: true },
  maxFeePerGas: BigNumber { _hex: '0x59682f2e', _isBigNumber: true },
  gasPrice: null,
  gasLimit: BigNumber { _hex: '0xc9ab', _isBigNumber: true },
  to: '0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270',
  value: BigNumber { _hex: '0x00', _isBigNumber: true },
  data: '0xa9059cbb0000000000000000000000003f76188fe26ea8197c6b4729f998b9ea4425beb600000000000000000000000000000000000000000000000006f05b59d3b20000',
  accessList: [],
  hash: '0xd950e8968d7dfa9ab0cbc969c6271ececfc77840872f45853d0151f55a857cb4',
  v: 1,
  r: '0x3ffffdbcb80b073bb178b18c881e4fe3a9c1e90b60f58c78560f850a5a60a84f',
  s: '0x492de3e35c9c916d302c4a324ef1a29632e361f7695e2a8b1e904482ae676ee8',
  from: '0x8D3a62174a7b3C05873F856C98c9B1fbA81B8904',
  confirmations: 0,
  wait: [Function (anonymous)]
}
#14

suspect problem is “gasPrice: null”

#15

I tested on bsc testnet and I didn’t get any error, it looks like you try it on polygon

I have gasPrice in my case

#16

how can I set gasprice?

#17

I don’t think that there is a way to do that now

I tested now on bsc mainnet and it works fine there too

#18

I don’t have a token on polygon network in order to test now

#19

I can send ))
provide your address

#20

meanwhile I tried native transfer on polygon and it looks like I got into same problem as you