Overview

The SDK currently supports specific add-ons from the QuickNode Marketplace with native functions for the add-on's RPC methods.

Supported Add-ons

Priority fee API

QuickNode has a priority fee API, which will fetch the recent priority fees paid across the last (up to) 100 blocks for the entire network or a specific program account. The method qn_estimatePriorityFees returns priority fees in 5% percentiles and convenient ranges (low, medium, high, and extreme).

Additional RPC Functions

sendSmartTransaction

This method will create and send a transaction with priority fees and optimized compute units and a given Keypair.

import { solanaWeb3, Solana } from "@quicknode/sdk";
const { Transaction, SystemProgram, Keypair, PublicKey } = solanaWeb3;

const mainSecretKey = Uint8Array.from([
//redacted
]);
const sender = Keypair.fromSecretKey(mainSecretKey);
const receiver = new PublicKey("redacted");
const senderPublicKey = sender.publicKey;

const endpoint = new Solana({
  endpointUrl:
    "https://some-cool-name.solana-mainnet.quiknode.pro/redacted",
});

const transaction = new Transaction();

// Add instructions for each receiver
transaction.add(
  SystemProgram.transfer({
    fromPubkey: senderPublicKey,
    toPubkey: receiver,
    lamports: 10,
  })
);

(async () => {
  // Endpoint must added to Priority Fee API to do this
  const signature = await endpoint.sendSmartTransaction({
    transaction,
    keyPair: sender,
    feeLevel: "high"
  });
  console.log(signature);
})().catch(console.error);

prepareSmartTransaction

This method will take a transaction and add a priority fees instruction based on recent network fees and an optimized compute units instruction.

import { solanaWeb3, Solana } from "@quicknode/sdk";
const { Transaction, SystemProgram, Keypair, PublicKey } = solanaWeb3;

const mainSecretKey = Uint8Array.from([
//redacted
]);
const sender = Keypair.fromSecretKey(mainSecretKey);
const receiver = new PublicKey("redacted");
const senderPublicKey = sender.publicKey;

const endpoint = new Solana({
  endpointUrl:
    "https://some-cool-name.solana-mainnet.quiknode.pro/redacted",
});

const transaction = new Transaction();

// Add instructions for each receiver
transaction.add(
  SystemProgram.transfer({
    fromPubkey: senderPublicKey,
    toPubkey: receiver,
    lamports: 10,
  })
);

(async () => {
  // Endpoint must added to Priority Fee API to do this
  const optimizedTransaction = await endpoint.prepareSmartTransaction({
    transaction,
    payerPublicKey: sender.publicKey,
    feeLevel: "high"
  });
  return optimizedTransaction;
  // proceed to sign and send the new optimized transaction
})().catch(console.error);

fetchEstimatePriorityFees

This method will fetch the recent priority fees paid across the last (up to) 100 blocks for the entire network or a specific program account.

import { solanaWeb3, Solana } from "@quicknode/sdk";
const { PublicKey } = solanaWeb3;

const programToSearch = new PublicKey("YOUR_PROGRAM_ID");
const numBlocks = 100;

const endpoint = new Solana({
  endpointUrl:
    "https://some-cool-name.solana-mainnet.quiknode.pro/redacted",
});

(async () => {
  // Endpoint must added to Priority Fee API to do this
  const recentPriorityFees = await endpoint.fetchEstimatePriorityFees({
    last_n_blocks: numBlocks,
    account: programToSearch.toBase58(),
  });
  return recentPriorityFees;
})().catch(console.error);