Celo API
Debug and trace
debug_traceTransaction

debug_traceTransaction - Celo

debug_traceTransaction. Returns detailed execution traces for a specified transaction

debug_traceTransaction - celo [Value: 90CU]
Traces the execution of a given transaction, providing detailed information about its internal operations for debugging purposes
Use cases

Use cases

  • Debug detailed execution of a specific transaction
  • Analyze smart contract interactions within a transaction
  • Trace internal operations and calls of a transaction
Constraints

Constraints

  • Requires valid transaction hash and tracer parameter
  • Node must support the debug_traceTransaction method
  • High resource usage for tracing complex transactions
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Language

Request
Examples
curl https://celo.drpc.org \
-X POST \
-H "Content-Type: application/json" \
--data '{"method":"debug_traceTransaction","params":["0x9e63085271890a141297039b3b711913699f1ee4db1acb667ad7ce304772036b", {"tracer": "callTracer"}], "id":1,"jsonrpc":"2.0"}'
Copy
Response
200
{
  "jsonrpc": "2.0",
  "result": [
    {
      "action": {
        "callType": "call",
        "from": "0x83806d539d4ea1c140489a06660319c9a303f874",
        "gas": "0x1a1f8",
        "input": "0x",
        "to": "0x1c39ba39e4735cb65978d4db400ddd70a72dc750",
        "value": "0x7a16c911b4d00000"
      },
      "blockHash": "0x7eb25504e4c202cf3d62fd585d3e238f592c780cca82dacb2ed3cb5b38883add",
      "blockNumber": 3068185,
      "result": {
        "gasUsed": "0x2982",
        "output": "0x"
      },
      "subtraces": 2,
      "traceAddress": [],
      "transactionHash": "0x17104ac9d3312d8c136b7f44d4b8b47852618065ebfa534bd2d3b5ef218ca1f3",
      "transactionPosition": 2,
      "type": "call"
    },
    {
      "action": {
        "callType": "call",
        "from": "0x1c39ba39e4735cb65978d4db400ddd70a72dc750",
        "gas": "0x13e99",
        "input": "0x16c72721",
        "to": "0x2bd2326c993dfaef84f696526064ff22eba5b362",
        "value": "0x0"
      },
      "blockHash": "0x7eb25504e4c202cf3d62fd585d3e238f592c780cca82dacb2ed3cb5b38883add",
      "blockNumber": 3068185,
      "result": {
        "gasUsed": "0x183",
        "output": "0x0000000000000000000000000000000000000000000000000000000000000001"
      },
      "subtraces": 0,
      "traceAddress": [
        0
      ],
      "transactionHash": "0x17104ac9d3312d8c136b7f44d4b8b47852618065ebfa534bd2d3b5ef218ca1f3",
      "transactionPosition": 2,
      "type": "call"
    },
    {
      "action": {
        "callType": "call",
        "from": "0x1c39ba39e4735cb65978d4db400ddd70a72dc750",
        "gas": "0x8fc",
        "input": "0x",
        "to": "0x70faa28a6b8d6829a4b1e649d26ec9a2a39ba413",
        "value": "0x7a16c911b4d00000"
      },
      "blockHash": "0x7eb25504e4c202cf3d62fd585d3e238f592c780cca82dacb2ed3cb5b38883add",
      "blockNumber": 3068185,
      "result": {
        "gasUsed": "0x0",
        "output": "0x"
      },
      "subtraces": 0,
      "traceAddress": [
        1
      ],
      "transactionHash": "0x17104ac9d3312d8c136b7f44d4b8b47852618065ebfa534bd2d3b5ef218ca1f3",
      "transactionPosition": 2,
      "type": "call"
    }
  ],
  "id": 0
}
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Request params

idinteger
jsonrpcstring
methodstring
Parametersarray
array
blockNumberstring
Specifies the block number to locate the transaction.
tracerobject
Supports callTracer and prestateTracer.
array
tracerstring
Default value is callTracer.
tracerConfigobject
array
onlyTopCallboolean
timeoutstring
Specifies a custom timeout for JavaScript-based tracing calls. Default is 5 seconds, maximum is 10 seconds. Valid units are "ns", "us", "ms", "s", with optional fractions, e.g., "200ms".

Response

200
Array of block traces.

Response params

object
idinteger
jsonrpcstring
resultarray_of_objects
Detailed trace data for the specified transaction, including call stack, gas usage, and execution results.
object
callTracerobject
object
fromstring
Sender's address.
tostring
Receiver's address.
valuestring
Amount transferred in wei.
gasstring
Gas allocated for the call.
inputstring
Data sent with the call.
gasUsedstring
Gas consumed by the trace.
outputstring
Result of the call.
errorstring
Any error encountered.
revertReasonstring
Solidity revert reason, if any.
callsarray
list of sub-calls
prestateTracerobject
object
balancestring
Account balance in wei.
nonceuint64
The transaction count for the account.
codestring
Hex-encoded contract bytecode.
storagemap[string]string
Contract's storage slots.
trace_transactiondebug_traceCall