Estimate Energy Amount

This endpoint estimates the energy amount needed to make a token transfer without creating a transaction.

POST /v1/estimate-energy

Request

Request Parameters

Field	Type	Required	Description
from_address	string	Yes	Sender's TRON wallet address (34 characters)
to_address	string	Yes	Recipient's TRON wallet address (34 characters)
contract_address	string	No	Smart contract address (default: TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t - Tether (USDT))

Bash

#!/bin/bash
API_TOKEN="your_api_token"
API_SECRET="your_api_secret"
REQUEST_BODY='{
  "from_address": "TRX_FROM_ADDRESS",
  "to_address": "TRX_TO_ADDRESS",
  "contract_address": "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t"
}'

# Calculate signature
SIGNATURE=$(echo -n "${REQUEST_BODY}${API_SECRET}" | sha256sum | cut -d' ' -f1)

# Make API request
curl -X POST "https://api.tronzap.com/v1/estimate-energy" \
  -H "Authorization: Bearer ${API_TOKEN}" \
  -H "X-Signature: ${SIGNATURE}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_BODY}"

Node.js

const crypto = require('crypto');
const axios = require('axios');

const apiToken = 'your_api_token';
const apiSecret = 'your_api_secret';
const requestBody = JSON.stringify({
  from_address: 'TRX_FROM_ADDRESS',
  to_address: 'TRX_TO_ADDRESS',
  contract_address: 'TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t'
});

// Calculate signature
const signature = crypto
  .createHash('sha256')
  .update(requestBody + apiSecret)
  .digest('hex');

// Make API request
axios({
  method: 'post',
  url: 'https://api.tronzap.com/v1/estimate-energy',
  headers: {
    'Authorization': `Bearer ${apiToken}`,
    'X-Signature': signature,
    'Content-Type': 'application/json'
  },
  data: requestBody
})
.then(response => console.log(response.data))
.catch(error => console.error(error));

PHP

<?php
$apiToken = 'your_api_token';
$apiSecret = 'your_api_secret';
$requestBody = json_encode([
  'from_address' => 'TRX_FROM_ADDRESS',
  'to_address' => 'TRX_TO_ADDRESS',
  'contract_address' => 'TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t'
]);

// Calculate signature
$signature = hash('sha256', $requestBody . $apiSecret);

// Make API request
$ch = curl_init('https://api.tronzap.com/v1/estimate-energy');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $requestBody);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
  'Authorization: Bearer ' . $apiToken,
  'X-Signature: ' . $signature,
  'Content-Type: application/json'
]);

$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>

Python

import hashlib
import json
import requests

api_token = 'your_api_token'
api_secret = 'your_api_secret'
request_body = json.dumps({
  'from_address': 'TRX_FROM_ADDRESS',
  'to_address': 'TRX_TO_ADDRESS',
  'contract_address': 'TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t'
})

# Calculate signature
signature = hashlib.sha256((request_body + api_secret).encode()).hexdigest()

# Make API request
headers = {
  'Authorization': f'Bearer {api_token}',
  'X-Signature': signature,
  'Content-Type': 'application/json'
}

response = requests.post(
  'https://api.tronzap.com/v1/estimate-energy',
  headers=headers,
  data=request_body
)

print(response.json())

Response

The response provides detailed calculation information for the energy needed to make a token transfer.

Response Fields

Field	Type	Description
code	integer	Response code (0 = success)
result	object	Response data
result.energy	integer	Energy amount needed to make transfer using the contract
result.duration	integer	Duration in hours (currently only 1 hour is available)
result.price	float	Price to delegate energy
result.activation_fee	float	Price for address activation (if required)
result.total	float	Final price including activation if required
result.from_address	string	The sender's TRON address provided in the request
result.to_address	string	The recipient's TRON address provided in the request
result.contract_address	string	The smart contract address used for the calculation

Example Response

{
    "code": 0,
    "result": {
        "energy": 64400,
        "duration": 1,
        "price": 3.66,
        "activation_fee": 0,
        "total": 3.66,
        "from_address": "TRX_FROM_ADDRESS",
        "to_address": "TRX_TO_ADDRESS",
        "contract_address": "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t"
    }
}

Example Response (Address not activated)

{
    "code": 0,
    "result": {
        "energy": 64400,
        "duration": 1,
        "price": 3.66,
        "activation_fee": 1.4,
        "total": 5.06,
        "from_address": "TRX_FROM_ADDRESS",
        "to_address": "TRX_TO_ADDRESS",
        "contract_address": "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t"
    }
}

Possible Errors

Error Code	Description
1	Authentication error (incorrect token or signature)
2	Invalid service or parameters
10	Invalid from address
10	Invalid to address
10	Invalid contract address
500	Internal server error

Notes

• The contract_address parameter is optional and defaults to TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t (Tether USDT)
• This endpoint only estimates energy to make USDT transfer without creating a transaction
• To create an actual energy purchase transaction, use the Create Transaction endpoint