Sync Methods

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Overview

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How It Works

1. Single Call - Submit transaction and receive final status in one API call
2. Built-in Waiting - SDK handles polling internally until transaction completes or times out
3. Immediate Feedback - Returns transaction receipt on success, or error details on failure
4. Timeout Protection - Configurable timeout prevents indefinite waiting

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Code Example

import { createGelatoEvmRelayerClient } from '@gelatocloud/gasless';

const relayer = createGelatoEvmRelayerClient({ apiKey, testnet: true });

const receipt = await relayer.sendTransactionSync({
  chainId: 84532,
  to: '0xContract',
  data: '0xCalldata',
  timeout: 30000
});

console.log('TX hash:', receipt.transactionHash);

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Additional Resources

• Send Sync Transactions How-To - Step-by-step implementation guide
• Tracking Requests - How to track transaction status