POST
/
9de47db917d4f69168e3fed02217d15b
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"
    }
  ]
}'
{
  "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.

Get you own node endpoint today

Start for free and get your app to production levels immediately. No credit card required.

You can sign up with your GitHub, X, Google, or Microsoft account.

​
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:

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

});

Body

application/json
​
id
integer
default:1
​
jsonrpc
string
default:2.0
​
method
string
default:getFeeForMessage
​
params
array

The serialized message

Response

200 - application/json
Fee details
​
jsonrpc
string
​
id
integer
​
result
integer