Celo API
Debug and trace
trace_transaction

trace_transaction - Celo

trace_transaction. Retrieves detailed traces for a specified transaction

trace_transaction - celo [Value: 90CU]
Retrieves detailed trace information for a given transaction by its hash
Use cases

Use cases

  • Debug specific transaction to identify errors
  • Analyze gas consumption for individual transaction
  • Trace internal calls within a transaction
Constraints

Constraints

  • Requires valid transaction hash as parameter
  • Node must support the trace_transaction method
  • Detailed traces may produce large data outputs
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Language

Request
Examples
curl --request POST \
     --url https://celo.drpc.org \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "trace_transaction",
  "params": [
    "0x8fc90a6c3ee3001cdcbbb685b4fbe67b1fa2bec575b15b0395fea5540d0901ae"
  ]
}
'
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
}
Copy

Request params

idinteger
jsonrpcstring
methodstring
Parametersarray of strings
array of strings
transactionHashstring

Response

200
Detailed execution traces of the transaction

Response params

object
idinteger
jsonrpcstring
resultobject
object
actionobject
Contains details about the trace action.
object
callTypestring
The type of call.
fromstring
The sender's address.
tostring
The receiver's address.
valuestring
The value transferred in wei.
gasstring
The gas provided for the call.
inputstring
The data sent with the call.
blockHashstring
The hash of the block where the trace occurred.
blockNumberstring
The number of the block where the trace occurred.
resultstring
object
gasUsedstring
Gas used by the trace.
outputstring
Call output.
subtracesinteger
Number of subtraces created by this trace..
traceAddressarray_of_strings
Position of this trace in the call stack.
transactionHashstring
Hash of the transaction containing this trace.
transactionPositionstring
Transaction's position in the block.
typestring
The type of trace.
transactionHashstring
transactionPositionstring
debug_traceBlockByHashdebug_traceTransaction