debug_traceTransaction

Returns the trace of a transaction execution on Optimism Layer 2, including all internal calls and state changes.

Parameters

1. Transaction Hash - DATA, 32 bytes

   • The transaction hash to trace

2. Trace Configuration - OBJECT (optional)

   • tracer - Type of tracer ("callTracer", "prestateTracer", etc.)
   • timeout - Timeout for the trace
   • tracerConfig - Additional tracer configuration

Implementation Examples

cURL

curl -X POST https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "debug_traceTransaction",
    "params": [
      "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
      {
        "tracer": "callTracer",
        "timeout": "5s"
      }
    ],
    "id": 1
  }'

JavaScript

// Trace transaction execution on Optimism L2
const response = await fetch('https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'debug_traceTransaction',
    params: [
      "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
      {
        tracer: "callTracer",
        timeout: "5s"
      }
    ],
    id: 1
  })
});

const data = await response.json();
console.log('Transaction trace:', data.result);

Response Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "type": "CALL",
    "from": "0x742d35cc6634c0532925a3b844bc9e7595f0beb",
    "to": "0x4200000000000000000000000000000000000006",
    "value": "0x0",
    "gas": "0x76c0",
    "gasUsed": "0x5208",
    "input": "0xa9059cbb",
    "output": "0x",
    "calls": []
  }
}

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Need help? Contact our support team or check the Optimism documentation.