# debug\_traceTransaction

#### **Parameters:**

**String** - The hash of a transaction.

**Object** - tracer

* **tracer: string** - the type of tracer. Currently supports `callTracer` and `prestateTracer`

#### **Returns:**

**Array** - Block traces

#### Example:

{% code overflow="wrap" %}

```json
// Request
curl https://base.blockpi.network/v1/rpc/your-rpc-key -X POST -H "Content-Type: application/json" --data '{"method":"debug_traceTransaction","params":["0xa5007c001f18b75b3ff0beb5b394734fcdfcf54fac808f4fefc50fb9aa770ff7", {"tracer": "callTracer"}],"id":1,"jsonrpc":"2.0"}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": -
}
```

{% endcode %}