Reading from Network

Fetch Wallet Account

This example demonstrates how to:

1. Generate a new keypair (public/private key pair).
2. Request an airdrop of SOL to fund the new address.
3. Retrieve the account data for the funded address.

On Solana, funding a new address with SOL automatically creates an account owned by the System Program. All "wallet" accounts are simply System Program owned accounts that hold SOL and can sign transactions.

import { Keypair, Connection, LAMPORTS_PER_SOL } from "@solana/web3.js";

const keypair = Keypair.generate();
console.log(`Public Key: ${keypair.publicKey}`);

const connection = new Connection("http://localhost:8899", "confirmed");

// Funding an address with SOL automatically creates an account
const signature = await connection.requestAirdrop(
  keypair.publicKey,
  LAMPORTS_PER_SOL
);
await connection.confirmTransaction(signature, "confirmed");

const accountInfo = await connection.getAccountInfo(keypair.publicKey);
console.log(JSON.stringify(accountInfo, null, 2));

Fetch Token Program

This example fetches the Token Program to demonstrate the difference between wallet and program accounts.

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

const connection = new Connection(
  "https://api.mainnet-beta.solana.com",
  "confirmed"
);
const address = new PublicKey("TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA");
const accountInfo = await connection.getAccountInfo(address);

console.log(

Fetch Mint Account

This example fetches the USD Coin (USDC) Mint account to show how programs on Solana store state in separate accounts.

A Mint account is an account owned by the Token Program. It stores global metadata for a specific token, including the total supply, number of decimals, and the accounts authorized to mint or freeze tokens. The Mint account's address uniquely identifies a token on the Solana network.

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

const connection = new Connection(
  "https://api.mainnet-beta.solana.com",
  "confirmed"
);

const address = new PublicKey("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v");
const accountInfo = await connection.getAccountInfo(address);

console.log(

Deserialize Mint Account

The data field of a Solana account contains raw bytes. To interpret this data meaningfully, you must deserialize it into the appropriate data type defined by the program that owns the account.

Most Solana programs provide client libraries with helper functions that abstract away the deserialization process. These functions convert the raw account bytes into structured data types, making it easier to work with the account data.

import { PublicKey, Connection } from "@solana/web3.js";
import { getMint } from "@solana/spl-token";

const connection = new Connection(
  "https://api.mainnet-beta.solana.com",
  "confirmed"
);

const address = new PublicKey("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v");
const mintData = await getMint(connection, address, "confirmed");

console.log(