Payment Utils

This tool prepares EVM transaction parameters for sending ETH or SWARM on the Base network. It accepts targetAddress (recipient 0x address), token (ETH or SWARM), and amount (human-readable decimal string). The worker validates the address format, converts the amount to wei, and constructs ERC20 transfer calldata when token is SWARM, returning the to, data, and value fields ready to be passed into WALLET_ExecuteRawTransaction. The produced output must strictly validate against the system-provided structured output schema for this tool, using correct types, enums, and ranges, and must not include any extra keys beyond those defined in that schema.