getFeeForMessage | Solana

The Solana getFeeForMessage method returns the fee in lamports that the cluster will charge to process the given message. On Solana.

POST /9de47db917d4f69168e3fed02217d15b

getFeeForMessage

cURL

curl --request POST \
  --url https://nd-326-444-187.p2pify.com/9de47db917d4f69168e3fed02217d15b \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "getFeeForMessage",
  "params": [
    "AQABA36MCIdgv94d3c8ywX8gm4JC7lKq8TH6zYjQ6ixtCwbyhwEgP0xzGjSa7QhxjYGUHwUPDgYsz9S8Mb/9c7ejFiwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIOnEi/spkCilDriqSI6o2AneB2xk65o4Xm9EM+yGyiPAQICAAEMAgAAAADKmjsAAAAA",
    {
      "commitment": "finalized"
    }
  ]
}
'

import requests

url = "https://nd-326-444-187.p2pify.com/9de47db917d4f69168e3fed02217d15b"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "getFeeForMessage",
    "params": ["AQABA36MCIdgv94d3c8ywX8gm4JC7lKq8TH6zYjQ6ixtCwbyhwEgP0xzGjSa7QhxjYGUHwUPDgYsz9S8Mb/9c7ejFiwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIOnEi/spkCilDriqSI6o2AneB2xk65o4Xm9EM+yGyiPAQICAAEMAgAAAADKmjsAAAAA", { "commitment": "finalized" }]
}
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({
    id: 1,
    jsonrpc: '2.0',
    method: 'getFeeForMessage',
    params: [
      'AQABA36MCIdgv94d3c8ywX8gm4JC7lKq8TH6zYjQ6ixtCwbyhwEgP0xzGjSa7QhxjYGUHwUPDgYsz9S8Mb/9c7ejFiwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIOnEi/spkCilDriqSI6o2AneB2xk65o4Xm9EM+yGyiPAQICAAEMAgAAAADKmjsAAAAA',
      {commitment: 'finalized'}
    ]
  })
};

fetch('https://nd-326-444-187.p2pify.com/9de47db917d4f69168e3fed02217d15b', 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://nd-326-444-187.p2pify.com/9de47db917d4f69168e3fed02217d15b",
  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([
    'id' => 1,
    'jsonrpc' => '2.0',
    'method' => 'getFeeForMessage',
    'params' => [
        'AQABA36MCIdgv94d3c8ywX8gm4JC7lKq8TH6zYjQ6ixtCwbyhwEgP0xzGjSa7QhxjYGUHwUPDgYsz9S8Mb/9c7ejFiwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIOnEi/spkCilDriqSI6o2AneB2xk65o4Xm9EM+yGyiPAQICAAEMAgAAAADKmjsAAAAA',
        [
                'commitment' => 'finalized'
        ]
    ]
  ]),
  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://nd-326-444-187.p2pify.com/9de47db917d4f69168e3fed02217d15b"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"getFeeForMessage\",\n  \"params\": [\n    \"AQABA36MCIdgv94d3c8ywX8gm4JC7lKq8TH6zYjQ6ixtCwbyhwEgP0xzGjSa7QhxjYGUHwUPDgYsz9S8Mb/9c7ejFiwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIOnEi/spkCilDriqSI6o2AneB2xk65o4Xm9EM+yGyiPAQICAAEMAgAAAADKmjsAAAAA\",\n    {\n      \"commitment\": \"finalized\"\n    }\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://nd-326-444-187.p2pify.com/9de47db917d4f69168e3fed02217d15b")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"getFeeForMessage\",\n  \"params\": [\n    \"AQABA36MCIdgv94d3c8ywX8gm4JC7lKq8TH6zYjQ6ixtCwbyhwEgP0xzGjSa7QhxjYGUHwUPDgYsz9S8Mb/9c7ejFiwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIOnEi/spkCilDriqSI6o2AneB2xk65o4Xm9EM+yGyiPAQICAAEMAgAAAADKmjsAAAAA\",\n    {\n      \"commitment\": \"finalized\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://nd-326-444-187.p2pify.com/9de47db917d4f69168e3fed02217d15b")

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  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"getFeeForMessage\",\n  \"params\": [\n    \"AQABA36MCIdgv94d3c8ywX8gm4JC7lKq8TH6zYjQ6ixtCwbyhwEgP0xzGjSa7QhxjYGUHwUPDgYsz9S8Mb/9c7ejFiwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIOnEi/spkCilDriqSI6o2AneB2xk65o4Xm9EM+yGyiPAQICAAEMAgAAAADKmjsAAAAA\",\n    {\n      \"commitment\": \"finalized\"\n    }\n  ]\n}"

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

200

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": 123
}

Solana getFeeForMessage method

The Solana getFeeForMessage method returns the fee in lamports that the cluster will charge to process the given message.

This method provides the cost of processing a message based on the current fee schedule. It is useful for estimating the cost of a transaction before it is submitted to the network.

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Parameters

• message — the message to calculate the fee for.

Response

• value — the fee in lamports that the cluster will charge to process the message.

Use case

A practical use case for getFeeForMessage is to estimate the cost of a transaction before it is submitted to the network. This can be useful for wallets or other applications that need to display or make use of this information.

Here’s a script to generate the message data for the 1 SOL transfer:

JavaScript

const web3 = require('@solana/web3.js');

async function createSerializedTransaction() {
    const connection = new web3.Connection(web3.clusterApiUrl('mainnet-beta'));

    let transaction = new web3.Transaction().add(
        web3.SystemProgram.transfer({
            fromPubkey: new web3.PublicKey('9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM'),
            toPubkey: new web3.PublicKey('A6132mRJy5zRmGsCCRbMsrbynuB9MRVgo3n6D5j49dBh'),
            lamports: web3.LAMPORTS_PER_SOL // This transfers 1 SOL.
        })
    );

    transaction.feePayer = transaction.instructions[0].keys[0].pubkey; // Set fee payer as the sender
    transaction.recentBlockhash = (await connection.getRecentBlockhash()).blockhash;

    // Serialize only the message part of the transaction
    return transaction.serializeMessage().toString('base64');
}

createSerializedTransaction().then(serializedMessage => {
    console.log(serializedMessage);
    // Use this output as the parameter in your getFeeForMessage call
});

from solana.rpc.async_api import AsyncClient
from solana.transaction import Transaction
from solders.system_program import TransferParams, transfer
from solders.pubkey import Pubkey
import asyncio

async def create_serialized_transaction():
    async with AsyncClient("https://api.mainnet-beta.solana.com") as client:
        # Create the transfer instruction
        transfer_instruction = transfer(
            TransferParams(
                from_pubkey=Pubkey.from_string("9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM"),
                to_pubkey=Pubkey.from_string("A6132mRJy5zRmGsCCRbMsrbynuB9MRVgo3n6D5j49dBh"),
                lamports=1000000000  # 1 SOL in lamports
            )
        )

        transaction = Transaction().add(transfer_instruction)

        transaction.fee_payer = Pubkey.from_string("9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM")

        recent_blockhash = await client.get_latest_blockhash()
        transaction.recent_blockhash = recent_blockhash.value.blockhash

        return transaction.compile_message()

async def get_fee_for_message(serialized_message):
    async with AsyncClient("https://api.mainnet-beta.solana.com") as client:
        response = await client.get_fee_for_message(serialized_message)
        return response.value

async def main():
    serialized_message = await create_serialized_transaction()
    print("Serialized Message:", serialized_message)

    fee = await get_fee_for_message(serialized_message)
    print(f"Fee for the message: {fee} lamports")

if __name__ == "__main__":
    asyncio.run(main())

Body

application/json

id · integer · default: 1

jsonrpc · string · default: 2.0

method · string · default: getFeeForMessage

params · (string | object)[]

The serialized message

Response

200 - application/json

Fee details

jsonrpc · string

id · integer

result · integer