eth_sendTransaction - Boba Network RPC Method

Creates and sends a new transaction from an unlocked account on Boba Network. The node signs the transaction server-side using the private key associated with the from address.

Why Boba Network? Build on the Hybrid Compute L2 enabling smart contracts to access AI models and Web2 APIs natively with HybridCompute 2.0 for native AI/API access, $70M ecosystem funding, OP Stack compatibility, and two-way offchain integration.

Security Warning: Public Dwellir endpoints do not manage unlocked accounts for you. On shared infrastructure, eth_sendTransaction commonly returns an unsupported-method response or an account-management error such as unknown account, depending on the client. For production applications, sign transactions client-side and use eth_sendRawTransaction instead.

When to Use This Method

eth_sendTransaction is useful for AI dApp developers, enterprise integration teams, and builders requiring offchain compute access in development scenarios:

• Local Development — Send transactions quickly on local nodes (Hardhat, Anvil, Ganache) without managing private keys
• Testing Workflows — Rapidly prototype and test contract interactions on dev networks
• Scripted Deployments — Deploy contracts on private or permissioned networks with unlocked accounts

Code Examples

Common Use Cases

1. Local Development with Hardhat

Send transactions using Hardhat's pre-funded unlocked accounts:

async function devTransfer(provider, from, to, value) {
  const txHash = await provider.send('eth_sendTransaction', [{
    from,
    to,
    value: '0x' + value.toString(16),
    gas: '0x5208' // 21000
  }]);

  const receipt = await provider.waitForTransaction(txHash);
  console.log(`Transfer confirmed in block ${receipt.blockNumber}`);
  return receipt;
}

2. Contract Deployment on Dev Network

Deploy contracts without managing private keys locally:

async function deployContract(provider, from, bytecode) {
  const txHash = await provider.send('eth_sendTransaction', [{
    from,
    data: bytecode,
    gas: '0x4C4B40' // 5,000,000
  }]);

  const receipt = await provider.waitForTransaction(txHash);
  console.log(`Contract deployed at: ${receipt.contractAddress}`);
  return receipt.contractAddress;
}

3. Batch Transfers in Testing

Send multiple test transactions on Boba Network dev networks:

async function batchTransfer(provider, from, recipients) {
  const hashes = [];

  for (const { to, value } of recipients) {
    const hash = await provider.send('eth_sendTransaction', [{
      from,
      to,
      value: '0x' + value.toString(16),
      gas: '0x5208'
    }]);
    hashes.push(hash);
  }

  return hashes;
}

Error Handling

Common errors and solutions:

Related Methods

• eth_sendRawTransaction — Broadcast a pre-signed transaction (recommended for production)
• eth_signTransaction — Sign without sending (requires unlocked account)
• eth_estimateGas — Estimate gas cost before sending