Via Web UI
Let's check all USDC transfers but filter transactions where the recipient or the sender is the zero address and if the amount is greater or equal to 10000 USDC.
Create a new Stream
Fill out the Stream settings:
- Add the USDC contract address
- Input the event ABI and select theTransfertopic
- Set the filter for Mints & Burns by adding below values (0x0000000000000000000000000000000000000000)
Programmatically
const transferUsdcAbi = [
{
anonymous: false,
inputs: [
{
indexed: true,
internalType: "address",
name: "from",
type: "address",
},
{
indexed: true,
internalType: "address",
name: "to",
type: "address",
},
{
indexed: false,
internalType: "uint256",
name: "value",
type: "uint256",
},
],
name: "Transfer",
type: "event",
},
];
const filter = {
or: [
{
and: [
{ eq: ["sender", "0x00000...00000"] },
{ gte: ["amount", "10000000000"] },
],
},
{
and: [
{ eq: ["receiver", "0x00000...00000"] },
{ gte: ["amount", "10000000000"] },
],
},
],
}; // we will only receive events when the transfer recipent or the sender is the zero address meaning we are filtering mints and burn
const options = {
chains: [EvmChain.ETHEREUM], // Monitor USDC on ethereum
description: "Token burns and mints", // your description
tag: "mintsAndBurns", // give it a tag
abi: transferUsdcAbi,
includeContractLogs: true,
topic0: ["Transfer(address,address,uint256)"],
advancedOptions: [
{
topic0: "Transfer(address,address,uint256)",
filter,
includeNativeTxs: true,
},
],
webhookUrl: "https://YOUR_WEBHOOK_URL", // webhook url to receive events,
};
const stream = await Moralis.Streams.add(options);
const { id } = stream.toJSON(); // { id: 'YOUR_STREAM_ID', ...stream }
// Attach the contract address to the stream
await Moralis.Streams.addAddress({
id,
address: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", // USDC address
});