Bankr Agent - Arbitrary Transactions
This skill should be used when the user wants to "submit a transaction", "execute calldata", "send raw transaction", "submit transaction JSON", or provides a JSON object with to/data/value/chainId fields. Handles raw EVM transaction submission.
Install
npx skillscat add bankrbot/claude-plugins/bankr-agent-arbitrary-transactions Install via the SkillsCat registry.
SKILL.md
Arbitrary Transaction Submission
Submit raw EVM transactions with explicit calldata to any supported chain.
JSON Format
{
"to": "0x...",
"data": "0x...",
"value": "0",
"chainId": 8453
}| 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 |
Categories
Install
npx skillscat add bankrbot/claude-plugins/bankr-agent-arbitrary-transactions Install via the SkillsCat registry.