trace_get

Returns a trace at a specific position within a transaction on Optimism.

Archive Node Required

This method requires an archive node. It is not available on full nodes.

Use Cases

• Specific trace lookup - Get a single trace by its position index
• Internal call inspection - Examine a specific internal call
• Targeted debugging - Investigate particular call depth for cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients

Parameters

Parameter	Type	Required	Description
txHash	DATA	Yes	32-byte transaction hash
indices	Array<QUANTITY>	Yes	Trace index positions (e.g., ["0x0"] for the first trace)

Request

{
  "jsonrpc": "2.0",
  "method": "trace_get",
  "params": ["0x43ac31f47abf56b34e0903e390dd9a1820ee7f03a6359cf2ef08d7152eb26cf3", ["0x0"]],
  "id": 1
}

Code 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": "trace_get",
    "params": ["0x43ac31f47abf56b34e0903e390dd9a1820ee7f03a6359cf2ef08d7152eb26cf3", ["0x0"]],
    "id": 1
  }'

JavaScript

import { JsonRpcProvider } from 'ethers';

const provider = new JsonRpcProvider('https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY');

const trace = await provider.send('trace_get', [
  '0x43ac31f47abf56b34e0903e390dd9a1820ee7f03a6359cf2ef08d7152eb26cf3',
  ['0x0']
]);
console.log('Trace type:', trace.type);
console.log('From:', trace.action.from);
console.log('To:', trace.action.to);
console.log('Value:', trace.action.value);

Python

from web3 import Web3

w3 = Web3(Web3.HTTPProvider('https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY'))

trace = w3.provider.make_request('trace_get', [
    '0x43ac31f47abf56b34e0903e390dd9a1820ee7f03a6359cf2ef08d7152eb26cf3',
    ['0x0']
])
result = trace['result']
print(f'Type: {result["type"]}')
print(f'From: {result["action"]["from"]}')
print(f'To: {result["action"]["to"]}')

Related Methods

• trace_transaction - Get all traces for a transaction
• trace_block - Get all traces in a block