Contract interactions

On Ethereum and Avalanche, onContractInteraction() calls you each time an address interacts with a contract it had not interacted with before — a token it receives for the first time, a protocol it starts using.

const eth = cg.explore(cg.networks.ethereum)

eth.onContractInteraction('0x...', async ({ contract, height }) => {
  const token = await eth.getTokenData(contract).catch(() => null)
  console.log(
    `New contract in block ${height}:`,
    token ? `${token.name} (${token.symbol})` : contract,
  )
})

With a wallet:

const wallet = cg.connect(cg.networks.avalanche, myWallet)
wallet.onContractInteraction(({ contract }) => console.log('First interaction with', contract))

Field	Type	Description
address	string	The address being followed
contract	string	The contract the address interacted with
height	number	Block height where the interaction happened

Only the first interaction with each contract produces an event; later transactions with the same contract are reported through onTransaction().

This event is not available on UTXO networks, which have no contracts.