svanas

const client: IWeb3 = TWeb3.Create(
  web3.eth.infura.endpoint(web3.Ethereum, INFURA_PROJECT_ID).Value
);

const task = web3.eth.balancer.v2.listen(
  client,
  procedure(
    blockNo  : BigInteger;
    poolId   : TBytes32;
    tokenIn  : TAddress;

svanas

const client: IWeb3 = TWeb3.Create(
  web3.eth.infura.endpoint(web3.Ethereum, INFURA_PROJECT_ID).Value
);

web3.eth.balancer.v2.swap(
  client,
  owner,
  TSwapKind.GivenIn,
  '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', // USDC
  '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2', // WETH

svanas

• Compound
• Fulcrum (now Ooki)
• Aave v2
• dYdX (now deprecated)
• Yearn Vaults v2
• Rari
• OUSD (aka Origin Dollar)
• mStable

svanas

# Trade on all the ETH-XXX market pairs.
# Written by Stefan van As <svanas AT runbox DOT com>
# Example: ./ETH-XXX-2.sh --exchange=Bittrex --price=0.05 --pushover-app-key=X --pushover-user-key=X

for i in "$@"
do
case $i in
    --exchange=*)
    EXCHANGE="${i#*=}"
    shift # past argument=value

svanas

uses
  // Delphi
  System.Classes,
  System.JSON,
  System.UITypes,
  // FireMonkey
  FMX.Controls,
  FMX.Controls.Presentation,
  FMX.Dialogs,
  FMX.Forms,

svanas

var client: IWeb3 := TWeb3.Create('https://<your-node-name>.discover.quiknode.pro/<your-token>/');
web3.eth.blockNumber(client, procedure(num: BigInteger; err: IError)
begin
  TThread.Synchronize(nil, procedure
  begin
    if Assigned(err) then
      MessageDlg(err.Message, TMsgDlgType.mtError, [TMsgDlgBtn.mbOK], 0)
    else
      MessageDlg(num.ToString, TMsgDlgType.mtInformation, [TMsgDlgBtn.mbOK], 0);
  end);

svanas

web3.eth.write(Client,
  TPrivateKey('b5b1870957d373ef0eeffecc6e4812c0fd08f554b37b233526acc331bf1544f7'), // from private key
  '0x1a306890df22c0965b0b1515a8082f8301d3d18e',                                    // to smart contract
  'setNumber(uint256)', [143],
  procedure(rcpt: ITxReceipt; err: IError) begin end);

svanas

web3.eth.write(Client,
  TPrivateKey('b5b1870957d373ef0eeffecc6e4812c0fd08f554b37b233526acc331bf1544f7'), // from private key
  '0x1a306890df22c0965b0b1515a8082f8301d3d18e',                                    // to smart contract
  'incrementNumber()', [],
  procedure(rcpt: ITxReceipt; err: IError) begin end);

svanas

var
  Client: IWeb3;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Client := TWeb3.Create(Sepolia.SetRPC('https://sepolia.infura.io/v3/your-project-id'));
end;

svanas

web3.eth.call(Client,
  '0x1a306890df22c0965b0b1515a8082f8301d3d18e',
  'getNumber()', [], procedure(qty: BigInteger; err: IError)
begin
  TThread.Synchronize(nil, procedure
  begin
    if Assigned(err) then
      MessageDlg(err.Message, TMsgDlgType.mtError, [TMsgDlgBtn.mbOK], 0)
    else
      ShowMessage(qty.ToString);