Trace a transaction clause

POST

https://vet.nownodes.io/debug/tracers

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

This endpoint allows you to create a tracer for a specific clause. Tracers are instrumental in monitoring and analyzing the execution flow within the EVM. You can customize the tracer using various options to tailor it to your specific debugging needs.

Body

application/json

namestring | null4bytecallnoopprestateunigrambigramtrigramevmdisopcount

The name of the tracer. An empty name stands for the default struct logger tracer.

configobject | null

The configuration of the tracer. It is specific to the name

targetstring

The unified path of the target to be traced. Currently, only the clause is supported.

Format: blockID/(txIndex|txId)/clauseIndex

Response

200OK

400Bad Request

Bad Request

Trace a transaction clause

curl -X POST 'https://vet.nownodes.io/debug/tracers' \
  -H 'Content-Type: application/json' \
  -d '{
    "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
    "name": "prestate",
    "config": {}
  }'

const response = await fetch('https://vet.nownodes.io/debug/tracers', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
      "name": "prestate",
      "config": {}
    }),
});

const data = await response.json();

require 'net/http'
require 'json'

uri = URI('https://vet.nownodes.io/debug/tracers')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
    "name": "prestate",
    "config": {}
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

import requests

payload = {
  "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
  "name": "prestate",
  "config": {}
}

response = requests.post('https://vet.nownodes.io/debug/tracers', json=payload)
data = response.json()

const response = await fetch('https://vet.nownodes.io/debug/tracers', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
      "name": "prestate",
      "config": {}
    }),
});

const data = await response.json();

const endpoint = "https://vet.nownodes.io/debug/tracers";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({
    "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
    "name": "prestate",
    "config": {}
  });
console.log(result);

const response = await fetch('https://vet.nownodes.io/debug/tracers', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
      "name": "prestate",
      "config": {}
    }),
});

const data = await response.json();

import requests

payload = {
  "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
  "name": "prestate",
  "config": {}
}

response = requests.post('https://vet.nownodes.io/debug/tracers', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://vet.nownodes.io/debug/tracers')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
    "name": "prestate",
    "config": {}
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "target": "0x010709463c1f0c9aa66a31182fb36d1977d99bfb6526bae0564a0eac4006c31a/0/0",
  "name": "prestate",
  "config": {}
}

{}

Invalid target