Debug API

debug_getBadBlocks

Returns a list of the last bad blocks that the client has seen on the network.

Method: POST

https://arbitrum.nownodes.io

Example body (raw)

{"method":"debug_getBadBlocks","params":[],"id":1,"jsonrpc":"2.0"}

Example response: 200

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": []
}

debug_storageRangeAt

Returns the contract storage for the specified range.

Method: POST

https://arbitrum.nownodes.io

Example body (raw)

{"method":"debug_storageRangeAt","params":["0x8d62b772854411691f20b6886776c51d726b1a4650d3f8a2c609d28ba1f021b8",0,"0x9011a47a421440A24F55698ec4F2eF97b5F7757f","0x0000000000000000000000000000000000000000000000000000000000000000",1],"id":1,"jsonrpc":"2.0"}

Example response: 200

{
    "jsonrpc": "2.0",
    "id": 1,
    "error": {
        "code": -32603,
        "message": "method handler crashed"
    }
}

debug_traceBlock

Returns a full stack trace of all invoked opcodes of all transactions that were included in a block.

Method: POST

https://arbitrum.nownodes.io

Example body (raw)

{"method":"debug_traceBlock","params":["rlp_encoded_block", {"tracer": "callTracer"}],"id":1,"jsonrpc":"2.0"}

Example response: 200

{
    "jsonrpc": "2.0",
    "id": 1,
    "error": {
        "code": -32602,
        "message": "invalid argument 0: json: cannot unmarshal hex string without 0x prefix into Go value of type hexutil.Bytes"
    }
}

debug_traceBlockByHash

Returns the possible tracing result number by executing all transactions in the block specified by the block hash with a tracer (Trace Mode required).

Method: POST

https://arbitrum.nownodes.io

Example body (raw)

{"method":"debug_traceBlockByHash","params":["0x8d62b772854411691f20b6886776c51d726b1a4650d3f8a2c609d28ba1f021b8", {"tracer": "callTracer"}],"id":1,"jsonrpc":"2.0"}

Example response: 200

{
    "jsonrpc": "2.0",
    "id": 1,
    "error": {
        "code": -32000,
        "message": "required historical state unavailable (reexec=128)"
    }
}

debug_traceBlockByNumber

Returns the tracing result by executing all transactions in the block specified by number with a tracer (Trace Mode required).

Method: POST

https://arbitrum.nownodes.io

Example body (raw)

{"method":"debug_traceBlockByNumber","params":["0x95BEE14", {"tracer": "callTracer"}],"id":1,"jsonrpc":"2.0"}

Example response: 200

{
    "jsonrpc": "2.0",
    "id": 1,
    "error": {
        "code": -32000,
        "message": "required historical state unavailable (reexec=128)"
    }
}

debug_traceCall

Returns the number of possible tracing result by executing an eth call within the context of the given block execution (Trace Mode required).

Method: POST

https://arbitrum.nownodes.io

Example body (raw)

{"method":"debug_traceCall","params":[{"from":null,"to":"0x16b5856dbc2f66d6dc5b361b0073f51ed5ffb52b","data":"0x727fa213619edc134b3c8b36e117a4b8e95cb5f7cd2330eab81aa241346ebe07"}, "latest", {"tracer": "callTracer"}],"id":1,"jsonrpc":"2.0"}

Example response: 200

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "beforeEVMTransfers": [
            {
                "purpose": "feePayment",
                "from": "0x0000000000000000000000000000000000000000",
                "to": null,
                "value": "0x0"
            }
        ],
        "afterEVMTransfers": [
            {
                "purpose": "gasRefund",
                "from": null,
                "to": "0x0000000000000000000000000000000000000000",
                "value": "0x0"
            },
            {
                "purpose": "feeCollection",
                "from": null,
                "to": "0xbF5041Fc07E1c866D15c749156657B8eEd0fb649",
                "value": "0x321626b400"
            },
            {
                "purpose": "feeCollection",
                "from": null,
                "to": "0xa4B00000000000000000000000000000000000F6",
                "value": "0x1c28cf2b700"
            }
        ],
        "from": "0x0000000000000000000000000000000000000000",
        "gas": "0x2fde466",
        "gasUsed": "0x347ee",
        "to": "0x16b5856dbc2f66d6dc5b361b0073f51ed5ffb52b",
        "input": "0x727fa213619edc134b3c8b36e117a4b8e95cb5f7cd2330eab81aa241346ebe07",
        "value": "0x0",
        "type": "CALL"
    }
}

debug_traceTransaction

Returns all traces of a given transaction (Trace Mode required).

Method: POST

https://arbitrum.nownodes.io

Example body (raw)

{"method":"debug_traceTransaction","params":["0x3c9329b765d88c03d18f87dc1f2b5138c89d9a415d5c73dc7827b87aca176c8e", {"tracer": "callTracer"}], "id":1,"jsonrpc":"2.0"}

Example response: 200

{
    "jsonrpc": "2.0",
    "id": 1,
    "error": {
        "code": -32000,
        "message": "transaction not found"
    }
}