Skip to main content
POST
/
v1
/
wallets
/
{walletId}
/
estimate-fee
Estimate Transfer Fee
curl --request POST \
  --url https://api.beta.getpara.com/v1/wallets/{walletId}/estimate-fee \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "to": "0x742d35Cc6634C0532925a3b844Bc9e7595f...",
  "value": "1000000000000000",
  "chainId": "1",
  "tokenAddress": "<string>"
}
'
import requests

url = "https://api.beta.getpara.com/v1/wallets/{walletId}/estimate-fee"

payload = {
    "to": "0x742d35Cc6634C0532925a3b844Bc9e7595f...",
    "value": "1000000000000000",
    "chainId": "1",
    "tokenAddress": "<string>"
}
headers = {
    "X-API-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)
const options = {
  method: 'POST',
  headers: {'X-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    to: '0x742d35Cc6634C0532925a3b844Bc9e7595f...',
    value: '1000000000000000',
    chainId: '1',
    tokenAddress: '<string>'
  })
};

fetch('https://api.beta.getpara.com/v1/wallets/{walletId}/estimate-fee', 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://api.beta.getpara.com/v1/wallets/{walletId}/estimate-fee",
  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([
    'to' => '0x742d35Cc6634C0532925a3b844Bc9e7595f...',
    'value' => '1000000000000000',
    'chainId' => '1',
    'tokenAddress' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-Key: <api-key>"
  ],
]);

$response = curl_exec($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://api.beta.getpara.com/v1/wallets/{walletId}/estimate-fee"

	payload := strings.NewReader("{\n  \"to\": \"0x742d35Cc6634C0532925a3b844Bc9e7595f...\",\n  \"value\": \"1000000000000000\",\n  \"chainId\": \"1\",\n  \"tokenAddress\": \"<string>\"\n}")

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

	req.Header.Add("X-API-Key", "<api-key>")
	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://api.beta.getpara.com/v1/wallets/{walletId}/estimate-fee")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"to\": \"0x742d35Cc6634C0532925a3b844Bc9e7595f...\",\n  \"value\": \"1000000000000000\",\n  \"chainId\": \"1\",\n  \"tokenAddress\": \"<string>\"\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.beta.getpara.com/v1/wallets/{walletId}/estimate-fee")

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

request = Net::HTTP::Post.new(url)
request["X-API-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"to\": \"0x742d35Cc6634C0532925a3b844Bc9e7595f...\",\n  \"value\": \"1000000000000000\",\n  \"chainId\": \"1\",\n  \"tokenAddress\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body
{
  "estimatedFee": "0.000756",
  "transferAmount": "0.001",
  "currency": "ETH",
  "gasLimit": "25200",
  "maxFeePerGas": "30000000000",
  "maxPriorityFeePerGas": "2000000000",
  "gasPrice": "30000000000",
  "warning": "<string>"
}
{
  "code": "INVALID_REQUEST",
  "message": "type must be one of EVM, SOLANA, COSMOS, STELLAR"
}
{
  "code": "UNAUTHORIZED",
  "message": "secret api key not provided"
}
{
  "code": "NOT_FOUND",
  "message": "wallet not found"
}
{
  "code": "RATE_LIMITED",
  "message": "Rate limit exceeded, try again shortly."
}
{
  "code": "INTERNAL_ERROR",
  "message": "Internal Server Error"
}

Authorizations

X-API-Key
string
header
default:sk_your_secret_key_here
required

Your partner secret key (server-side only)

Headers

X-Request-Id
string<uuid>

UUID for request tracing. Para returns one if omitted.

Path Parameters

walletId
string
required

Wallet ID

Example:

"0a1b2c3d-4e5f-6789-abcd-ef0123456789"

Body

application/json
to
string
required

Destination address

Example:

"0x742d35Cc6634C0532925a3b844Bc9e7595f..."

value
string
required

Transfer amount in smallest unit (wei for ETH, lamports for SOL)

Example:

"1000000000000000"

chainId

Chain ID. Required for EVM wallets, ignored for Solana.

Example:

"1"

tokenAddress
string

Token contract address. EVM: ERC-20 contract. Solana: SPL mint address.

network
enum<string>

Solana network. In production, defaults to SOLANA. In beta, only SOLANA_DEVNET is allowed (and is the default).

Available options:
SOLANA,
SOLANA_DEVNET

Response

Fee estimate

estimatedFee
string
required

Estimated fee in standard units of the native currency (e.g. ETH, SOL)

Example:

"0.000756"

transferAmount
string
required

Transfer amount in standard units of the native currency

Example:

"0.001"

currency
string
required

Native currency symbol (e.g. ETH, SOL)

Example:

"ETH"

gasLimit
string

Estimated gas limit. EVM only.

Example:

"25200"

maxFeePerGas
string

EIP-1559 max fee per gas (in wei). EVM only.

Example:

"30000000000"

maxPriorityFeePerGas
string

EIP-1559 max priority fee per gas (in wei). EVM only.

Example:

"2000000000"

gasPrice
string

Legacy gas price (in wei). EVM legacy transactions only.

Example:

"30000000000"

warning
string

Present if estimation used fallback heuristics