debug_traceCall | Base

Execute a call and retrieve a detailed execution trace

curl --request POST \
  --url https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14 \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "debug_traceCall",
  "id": 1,
  "params": [
    {
      "to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "gasPrice": "0x7896e72a",
      "data": "0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87"
    },
    "latest"
  ]
}
'

import requests

url = "https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14"

payload = {
    "jsonrpc": "2.0",
    "method": "debug_traceCall",
    "id": 1,
    "params": [
        {
            "to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
            "gasPrice": "0x7896e72a",
            "data": "0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87"
        },
        "latest"
    ]
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'debug_traceCall',
    id: 1,
    params: [
      {
        to: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913',
        gasPrice: '0x7896e72a',
        data: '0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87'
      },
      'latest'
    ]
  })
};

fetch('https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'jsonrpc' => '2.0',
    'method' => 'debug_traceCall',
    'id' => 1,
    'params' => [
        [
                'to' => '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913',
                'gasPrice' => '0x7896e72a',
                'data' => '0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87'
        ],
        'latest'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"debug_traceCall\",\n  \"id\": 1,\n  \"params\": [\n    {\n      \"to\": \"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913\",\n      \"gasPrice\": \"0x7896e72a\",\n      \"data\": \"0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87\"\n    },\n    \"latest\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"debug_traceCall\",\n  \"id\": 1,\n  \"params\": [\n    {\n      \"to\": \"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913\",\n      \"gasPrice\": \"0x7896e72a\",\n      \"data\": \"0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87\"\n    },\n    \"latest\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"debug_traceCall\",\n  \"id\": 1,\n  \"params\": [\n    {\n      \"to\": \"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913\",\n      \"gasPrice\": \"0x7896e72a\",\n      \"data\": \"0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87\"\n    },\n    \"latest\"\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": {
    "structLogs": [
      {}
    ],
    "gas": 123,
    "returnValue": "<string>",
    "gasUsed": 123,
    "failed": true
  }
}

POST

2fc1de7f08c0465f6a28e3c355e0cb14

Execute a call and retrieve a detailed execution trace

curl --request POST \
  --url https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14 \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "debug_traceCall",
  "id": 1,
  "params": [
    {
      "to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "gasPrice": "0x7896e72a",
      "data": "0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87"
    },
    "latest"
  ]
}
'

import requests

url = "https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14"

payload = {
    "jsonrpc": "2.0",
    "method": "debug_traceCall",
    "id": 1,
    "params": [
        {
            "to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
            "gasPrice": "0x7896e72a",
            "data": "0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87"
        },
        "latest"
    ]
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'debug_traceCall',
    id: 1,
    params: [
      {
        to: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913',
        gasPrice: '0x7896e72a',
        data: '0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87'
      },
      'latest'
    ]
  })
};

fetch('https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'jsonrpc' => '2.0',
    'method' => 'debug_traceCall',
    'id' => 1,
    'params' => [
        [
                'to' => '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913',
                'gasPrice' => '0x7896e72a',
                'data' => '0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87'
        ],
        'latest'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"debug_traceCall\",\n  \"id\": 1,\n  \"params\": [\n    {\n      \"to\": \"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913\",\n      \"gasPrice\": \"0x7896e72a\",\n      \"data\": \"0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87\"\n    },\n    \"latest\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"debug_traceCall\",\n  \"id\": 1,\n  \"params\": [\n    {\n      \"to\": \"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913\",\n      \"gasPrice\": \"0x7896e72a\",\n      \"data\": \"0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87\"\n    },\n    \"latest\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"debug_traceCall\",\n  \"id\": 1,\n  \"params\": [\n    {\n      \"to\": \"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913\",\n      \"gasPrice\": \"0x7896e72a\",\n      \"data\": \"0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87\"\n    },\n    \"latest\"\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": {
    "structLogs": [
      {}
    ],
    "gas": 123,
    "returnValue": "<string>",
    "gasUsed": 123,
    "failed": true
  }
}

Executes a call and retrieves a detailed execution trace of the call, similar to a transaction but without creating a transaction on the blockchain. This method is crucial for developers and analysts who need to understand the execution flow of a call, including all the operations (opcodes) executed, gas usage, and the call’s outcome.

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Request

To use debug_traceCall, send a POST request with a JSON RPC call in the body.

Parameters

from (string): The address the call is sent from.
to (string): The address the call is directed to.
gasPrice (string): The gas price for the call.
data (string): The data sent along with the call.

Response

The response includes a detailed execution trace of the call, providing insights into each step of the call’s execution.

result (object): The detailed execution trace, including:
- structLogs (array): An array of execution steps (opcodes) taken by the call.
- gas (integer): The gas provided by the call.
- returnValue (string): The return value of the call, if any.
- gasUsed (integer): The total gas used by the call.
- failed (boolean): Indicates whether the call failed.

Use case

The debug_traceCall method is essential for:

Developers debugging smart contract interactions.
Analysts conducting forensic analysis of calls.
Tools and services that provide insights into Ethereum Virtual Machine (EVM) execution.

Body

application/json

jsonrpc

string

default:2.0

method

string

default:debug_traceCall

integer

default:1

params

array

Parameters for the call

Response

200 - application/json

Detailed execution trace of the call

jsonrpc

string

integer

result

object

Show child attributes

Last modified on June 22, 2026

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debug_traceCall | Base

Request

Parameters

Response

Use case

Body

Response

​Request

​Parameters

​Response

​Use case

Body

Response

Request

Parameters

Response

Use case