debug_traceCall

Returns the number of possible tracing result by executing an eth_call within the context of the given block execution. This method uses 1000 credits from your daily balance.

Limited access

Infura restricts debug_traceCall to a select set of customers. Please contact the Infura support team to ask about custom plans.

Parameters

• Transaction object with the following fields:

  • from: (string) address (20 bytes) the transaction is sent from.
  • to: (string) [required] address (20 bytes) the transaction is directed to.
  • gas: (string) hexadecimal value of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions.
  • gasPrice: (string) hexadecimal value of the gasPrice used for each paid gas.
  • maxPriorityFeePerGas: (string) maximum fee, in wei, the sender is willing to pay per gas above the base fee.
  • maxFeePerGas: (string) maximum total fee (base fee + priority fee), in wei, the sender is willing to pay per gas.
  • value: (string) hexadecimal of the value sent with this transaction.
  • data: (string) hash of the method signature and encoded parameters. See Ethereum contract ABI specification.

• block parameter: [Required] hexadecimal block number, or one of the string tags latest, earliest, pending, or finalized. See the default block parameter.

  warning

  safe isn't supported. Use finalized instead.

• Optional tracing options object with the following fields:

  • tracer: (string) [optional] type of tracer. Supports callTracer or prestateTracer.
  • tracerConfig: (object) [optional] tracer configuration options:
    • onlyTopCall: (boolean) [optional] when true, will only trace the primary (top-level) call and not any sub-calls. It eliminates the additional processing for each call frame.

Returns

Depending on the specified tracer type, returns a callTracer object or prestateTracer object.

Example

Replace <YOUR-API-KEY> with an API key from your MetaMask Developer dashboard.

Request

• curl
• WSS

curl https://mantle-mainnet.infura.io/v3/<YOUR-API-KEY> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc": "2.0", "method": "debug_traceCall", "params": [{"to": "0x6b175474e89094c44da98b954eedeac495271d0f", "data": "0x70a082310000000000000000000000006E0d01A76C3Cf4288372a29124A26D4353EE51BE"}, "latest", {"tracer": "callTracer"}], "id": 1}'

wscat -c wss://mantle-mainnet.infura.io/ws/v3/<YOUR-API-KEY> -x '{"jsonrpc": "2.0", "method": "debug_traceCall", "params": [{"to": "0x6b175474e89094c44da98b954eedeac495271d0f", "data": "0x70a082310000000000000000000000006E0d01A76C3Cf4288372a29124A26D4353EE51BE"}, "latest", {"tracer": "callTracer"}], "id": 1}'

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "from": "0x0000000000000000000000000000000000000000",
    "gas": "0x28cc0",
    "gasUsed": "0x3635000",
    "to": "0x6b175474e89094c44da98b954eedeac495271d0f",
    "input": "0x70a082310000000000000000000000006e0d01a76c3cf4288372a29124a26d4353ee51be",
    "value": "0x0",
    "type": "CALL"
  }
}