Skip to main content

​
Parameters

​
chainId
string
default:"42170"
required
Unique identifier for a blockchain network.
​
id
number
default:1
required
Request identifier used to match responses.
​
jsonrpc
string
default:"2.0"
required
JSON-RPC version.
​
method
string
default:"arbtrace_call"
required
JSON-RPC method name.
​
params
object
required
An array containing the transaction call object, trace types, and block tag/number.Positional parameters for arbtrace_call:
  • params[0]: Transaction call object for simulation.
  • params[1]: Trace types to return: trace, vmTrace, or stateDiff.
  • params[2]: Block number (hex) or tag (“latest”, “pending”).

​
Returns

​
result
object
Traces of the simulated call execution.
curl --request POST \
  --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=42170 \
  --header 'content-type: application/json' \
  --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "arbtrace_call",
    "params": [
      {},
      [
        "trace"
      ],
      "latest"
    ]
  }'

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