getFeeForMessage

All the specifications for getFeeForMessage RPC Method on Solana

Get the fee the network will charge for a particular message

Parameters required for this RPC call

• message: A Base-64 encoded message, for which we are getting the fees.

• minContextSlot: The minimum slot that the request can be evaluated at.

• configuration : This contains the following parameters, all are optional fields.

  • commitment: The commitment describes how finalized a block is at that point in time. Only confirmed and finalized are supported, defaults to finalized.

  • encoding: Encoding format for each returned transaction. The supported options are json, jsonParsed, base58 and base64. You can know more about Parsed responses more on Solana docs.

cURL

curl https://rpc.shyft.to?api_key=YOUR-API-KEY -s -X \
  POST -H "Content-Type: application/json" -d ' 
   {
     "jsonrpc": "2.0",
     "id": 1,
     "method": "getFeeForMessage",
     "params": [
       "AQABAgIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEBAQAA",
       {
         "commitment": "processed"
       }
     ]
   }
 '

Web3.js

import { Connection, Message, clusterApiUrl } from "@solana/web3.js";

const connection = new Connection("https://rpc.shyft.to?api_key=YOUR-API-KEY", "confirmed");
let b64Message =
  "AQABAgIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEBAQAA";
let message = Message.from(Buffer.from(b64Message, "base64"));

let fee = await connection.getFeeForMessage(message);

console.log(fee);

Response

{
  "jsonrpc": "2.0",
  "result": {
    "context": { "slot": 5068 },
    "value": 5000
  },
  "id": 1
}