arbtrace_replayTransaction

POST

/{apiKey}

Replays a specific transaction and returns the requested trace types without actually executing it on the network. 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

stringformat: "^0x[0-9a-f]{64}$"required

The hash of the transaction to replay.

enum[]required

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

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

Responses

200

The trace result object for the replayed transaction.

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_replayTransaction",  "params": [    "0xd2ea43b18e2f0acb66b36e773f20a4e9a1ee2df00a9794f63c2f4d0519cbe12a",    [      "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_replayTransaction

Path Parameters

apiKey

Request

Transaction hash

Trace types

Responses

200