World Chain: eth, debug (4/4)

API reference for World Chain. All methods ->

Part 4 of 4: 1 · 2 · 3 · 4

debug_traceTransaction

Traces the execution of a transaction specified by hash.

Parameters

• id (integer; required): a request ID (example: 1).

• jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

• method (string; required): a method used for the request.

• params (array; required):

  • <transactionHash> (string; required): the hash of the transaction to trace.
  • <object> (optional): the tracing options:
    • tracer (string): the tracer to use, for example callTracer or prestateTracer.
    • tracerConfig (object): tracer options, for example {"onlyTopCall": true} for callTracer to skip internal calls.
    • timeout (string): the tracing timeout, for example "5s".

Returns

• <object>: the trace produced by the tracer selected.

Request example

note

Ankr's World Chain nodes keep receipts, logs, and state for the most recent ~100,000 blocks, about 55 hours. The block and transaction in this example were recent when this page was written; to run it, replace them with ones from that window.

curl -X POST https://rpc.ankr.com/worldchain/YOUR_ANKR_API_KEY \
-H 'Content-Type: application/json' \
-d '{
    "jsonrpc": "2.0",
    "method": "debug_traceTransaction",
    "params": [
        "0xe607038ada0169406eb384806f47215946431f550279e83489f10dd7ca192618",
        {
            "tracer": "callTracer",
            "timeout": "5s",
            "tracerConfig": {
                "onlyTopCall": true
            }
        }
    ],
    "id": 1
}'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "from": "0x0774f5544f32a7a5e33803f2ebd8264765f4ccbc",
        "gas": "0x30d40",
        "gasUsed": "0x73b4",
        "to": "0x2cfc85d8e48f8eab294be644d9e25c3030863003",
        "input": "0xa9059cbb00000000000000000000000090ed778edda7ea75f9b331a138a546b1c6e3b6fe0000000000000000000000000000000000000000000000dfe3437e527b480000",
        "output": "0x0000000000000000000000000000000000000000000000000000000000000001",
        "value": "0x0",
        "type": "CALL"
    }
}

---

debug_traceCall

Traces a call executed on top of the state of a block specified, without creating a transaction.

Parameters

• id (integer; required): a request ID (example: 1).

• jsonrpc (string; required): a JSON RPC spec used (example: 2.0).

• method (string; required): a method used for the request.

• params (array; required):

  • <object> (required): the call object, the same as for eth_call: from, to, gas, gasPrice, value, data.
  • <string> (required): a block number in hex, or one of the tags latest, earliest, pending.
  • <object> (optional): the tracing options, the same as for debug_traceTransaction.

Returns

• <object>: the trace produced by the tracer selected.

Request example

curl -X POST https://rpc.ankr.com/worldchain/YOUR_ANKR_API_KEY \
-H 'Content-Type: application/json' \
-d '{
    "jsonrpc": "2.0",
    "method": "debug_traceCall",
    "params": [
        {
            "to": "0x2cfc85d8e48f8eab294be644d9e25c3030863003",
            "data": "0x70a082310000000000000000000000000774f5544f32a7a5e33803f2ebd8264765f4ccbc"
        },
        "latest",
        {
            "tracer": "callTracer",
            "timeout": "5s",
            "tracerConfig": {
                "onlyTopCall": true
            }
        }
    ],
    "id": 1
}'

Response example

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "from": "0x0000000000000000000000000000000000000000",
        "gas": "0x2faf080",
        "gasUsed": "0x5dba",
        "to": "0x2cfc85d8e48f8eab294be644d9e25c3030863003",
        "input": "0x70a082310000000000000000000000000774f5544f32a7a5e33803f2ebd8264765f4ccbc",
        "output": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "value": "0x0",
        "type": "CALL"
    }
}

---