arbtrace_replayBlockTransactions

POST

/{apiKey}

Replays all transactions in the specified block and returns the requested trace types for each transaction. This is an Arbitrum-specific tracing method that works for pre-Nitro blocks (before block 22,207,815). For post-Nitro blocks, use Geth debug_* methods.

Path Parameters

stringrequireddefaults to docs-demo

For higher throughput, create your own API key

Request

string or enumrequired

The block number as a hexadecimal string, or a block tag such as "latest", "earliest", or "pending".

enum[]required

Array of trace types to return. Valid values: "trace", "vmTrace", "stateDiff".

Array of trace types to return (e.g., ["trace"]).

Responses

200

An array of trace results, one per transaction in the block.

POST/v2/{apiKey}

curl --request POST \  --url https://arb-mainnet.g.alchemy.com/v2/docs-demo \  --header 'Content-Type: application/json' \  --data '{  "jsonrpc": "2.0",  "id": 1,  "method": "arbtrace_replayBlockTransactions",  "params": [    "0x152DD07",    [      "trace"    ]  ]}'

200Success

{  "jsonrpc": "2.0",  "id": 1,  "result": [    {      "output": "0x",      "stateDiff": null,      "trace": [        {          "action": {            "callType": "call",            "from": "0x00000000000000000000000000000000000a4b05",            "gas": "0x0",            "input": "0x",            "to": "0xa4b05fffffffffffffffffffffffffffffffffff",            "value": "0x0"          },          "result": {            "gasUsed": "0x0",            "output": "0x"          },          "subtraces": 0,          "traceAddress": [],          "type": "call"        }      ],      "vmTrace": null    }  ]}

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arbtrace_replayBlockTransactions

Path Parameters

apiKey

Request

Block number

Trace types

Responses

200