write_contract
Initiate state-changing smart contract functions on Ethereum-compatible blockchains. Specify contract details, ABI, function, and arguments, then sign and send transactions securely.
Instructions
Write data to a smart contract by calling a state-changing function. This modifies blockchain state and requires gas payment and transaction signing.
Input Schema
Name | Required | Description | Default |
---|---|---|---|
abi | Yes | The ABI (Application Binary Interface) of the smart contract function, as a JSON array | |
args | Yes | The arguments to pass to the function, as an array (e.g., ['0x1234...', '1000000000000000000']) | |
contractAddress | Yes | The address of the smart contract to interact with | |
functionName | Yes | The name of the function to call on the contract (e.g., 'transfer') | |
network | No | Network name (e.g., 'ethereum', 'optimism', 'arbitrum', 'base', 'polygon') or chain ID. Defaults to Ethereum mainnet. | |
privateKey | Yes | Private key of the sending account in hex format (with or without 0x prefix). SECURITY: This is used only for transaction signing and is not stored. |