Field	Type	Description
`to`	string	Target contract address (0x + 40 hex chars)
`data`	string	Calldata to execute (0x + hex string)
`value`	string	Amount in wei (e.g., "0", "1000000000000000000")
`chainId`	number	Target chain ID

Supported Chains

Chain	Chain ID
Ethereum	1
Polygon	137
Base	8453
Unichain	130

Prompt Examples

Submit a raw transaction:

Submit this transaction:
{
  "to": "0x1234567890abcdef1234567890abcdef12345678",
  "data": "0xa9059cbb000000000000000000000000recipient00000000000000000000000000000000000000000000000000000000000f4240",
  "value": "0",
  "chainId": 8453
}

Execute calldata on a contract:

Execute this calldata on Base:
{
  "to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
  "data": "0x095ea7b30000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488dffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
  "value": "0",
  "chainId": 8453
}

Send ETH with calldata:

Submit transaction with value:
{
  "to": "0xRecipientAddress...",
  "data": "0x",
  "value": "1000000000000000000",
  "chainId": 1
}

Validation Rules

Field	Validation
`to`	Must be 0x followed by exactly 40 hex characters
`data`	Must start with 0x, can be "0x" for empty calldata
`value`	Wei amount as string, use "0" for no value transfer
`chainId`	Must be a supported chain ID

Common Issues

Issue	Resolution
Unsupported chain	Use chainId 1, 137, 8453, or 130
Invalid address	Ensure 0x + 40 hex chars
Invalid calldata	Ensure proper hex encoding with 0x prefix
Transaction reverted	Check calldata encoding and contract state
Insufficient funds	Ensure wallet has enough ETH/MATIC for gas + value

Bankr Agent - Arbitrary Transactions

Arbitrary Transaction Submission

JSON Format