debug_jstraceCall

Compared with traditional debug API, this new debug PRO API supports customized tracers.

📘

Supported on BSC, ETH, and Polygon mainnet only.

Parameters

• object[OPTIONAL] - The transaction call object
  • from- The address the transaction is sent from
  • to- The address the transaction is directed to
  • gas- The gas provided for the transaction execution
  • gasPrice- The gas price
  • data- The data sent along with the transaction
  • value- The value transferred in Wei, encoded as a hexadecimal
• blockNumber[REQUIRED] - The block number, hex format
• tracer[REQUIRED] - The tracer type

Returns

This returns based on callTracer. Please refer to Geth implementation for more return data fields.

• Object- Full trace of the block.
  • result- Trace Object, which has the following fields:
    • from- The address the transaction is sent from
    • to- The address the transaction is directed to
    • gas- The gas provided for the transaction execution
    • gasUsed- The gasPrice used for each paid gas
    • input- The data sent along with the transaction
    • output- The output data
    • type- Type of the transaction
    • value- The value transferred in Wei, encoded as a hexadecimal

API Endpoint

The format of a MegaNode API endpoint is https://{chain}-{network}.nodereal.io/v1/{API-key}
Here is an example:

https://bsc-mainnet.nodereal.io/v1/4c0a1c23661a4e26bcbcwed461e34ea9

For other chains or networks, you could refer to this guidance Find API key & endpoint.

Example

Request

curl https://bsc-mainnet.nodereal.io/v1/your-api-key \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"debug_jstraceCall","params": [{"from": "0x4982085c9e2f89f2ecb8131eca71afad896e89cb","to": "0xce56d6ff4f9c8dbcacc5f848ca8c60ba5469ae70","gas": "0x7148","value": "0x11c37937e08000"},"latest",{"tracer": "callTracer"}],"id": 0 }'

Result

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "type": "CALL",
        "from": "0x4982085c9e2f89f2ecb8131eca71afad896e89cb",
        "to": "0xce56d6ff4f9c8dbcacc5f848ca8c60ba5469ae70",
        "value": "0x11c37937e08000",
        "gas": "0x1f40",
        "gasUsed": "0x0",
        "input": "0x",
        "output": "0x"
    }
}