How to Build on Solana: A Beginner Developer Guide (2026)

Solana is one of the most active developer ecosystems in crypto. Over 2,500 developers contribute to Solana projects monthly, and the ecosystem processes more transactions daily than Ethereum, BNB Chain, and Polygon combined. If you're a developer considering building on Solana, you're making a strong bet.

But getting started can be intimidating. Solana programs are written in Rust (a systems language most web developers haven't used), the runtime model is unlike any other blockchain, and the tooling landscape has evolved rapidly. This guide cuts through the noise and gives you a clear path from zero to deploying your first Solana program.

Solana Architecture: What Makes It Different

Before writing code, understand how Solana differs from Ethereum:

Accounts, not contracts: On Ethereum, smart contracts store their own data internally. On Solana, programs (the equivalent of smart contracts) are stateless — they don't store data. Instead, data lives in separate accounts. A program reads from and writes to accounts that are passed to it. This separation of code and state is the core mental model shift.

Accounts must be pre-allocated: Every account on Solana must have enough SOL deposited (called "rent") to cover its storage. When you create an account, you specify its size upfront. This is different from Ethereum where storage grows dynamically.

Parallel execution: Solana can execute transactions in parallel if they don't touch the same accounts. This is why Solana is fast — but it means you must specify which accounts a transaction will read/write to before submitting it. On Ethereum, the EVM figures this out during execution.

Programs are upgradeable by default: Unlike Ethereum where contracts are immutable once deployed (unless using proxy patterns), Solana programs can be upgraded by the deployer unless explicitly marked as immutable.

Choosing Your Framework: Native Rust vs. Anchor

You have two main options for writing Solana programs:

Native Rust

Writing programs directly in Rust using the solana-program crate. This gives you full control but requires significantly more boilerplate code.

When to use native Rust:

You need maximum performance optimization
You're building infrastructure-level code (like a DEX or AMM)
You already know Rust well and want granular control
You're working on programs where every byte of account space matters

Anchor Framework

Anchor is a framework that abstracts away most Solana boilerplate. It's built on top of native Rust but provides macros, automatic account validation, serialization/deserialization, and a much better developer experience.

When to use Anchor:

You're new to Solana development (strongly recommended)
You want to ship faster
You want built-in security checks (Anchor prevents many common vulnerabilities automatically)
You're building applications where developer velocity matters more than squeezing out every last compute unit

The verdict: Use Anchor unless you have a specific reason not to. The vast majority of Solana projects — including major protocols — use Anchor. It's the standard.

Setting Up Your Development Environment

Prerequisites

You need the following installed:

Rust: Install via rustup

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Solana CLI: The command-line tools for interacting with the Solana network

sh -c "$(curl -sSfL https://release.anza.xyz/stable/install)"

Anchor CLI: If using Anchor (recommended)

cargo install --git https://github.com/coral-xyz/anchor avm --force
avm install latest
avm use latest

Node.js: For client-side code and testing (v18+ recommended)
Yarn or npm: For JavaScript/TypeScript package management

Configure Solana CLI

Set your CLI to use devnet (the test network):

solana config set --url devnet

Generate a new keypair for development:

solana-keygen new

Get free devnet SOL for testing:

solana airdrop 2

You can airdrop up to 2 SOL at a time on devnet. If the faucet is dry (happens during high traffic), use the Solana Faucet web interface.

Your First Anchor Program

Let's build a simple program that stores a counter on-chain and lets users increment it. This covers the core Solana concepts: accounts, instructions, and state management.

Initialize the Project

anchor init my_counter
cd my_counter

This creates a project structure:

my_counter/
├── programs/my_counter/src/lib.rs   # Your Solana program (Rust)
├── tests/my_counter.ts              # Tests (TypeScript)
├── Anchor.toml                       # Config
├── migrations/                       # Deploy scripts
└── app/                              # Frontend (optional)

Write the Program

Open programs/my_counter/src/lib.rs and replace the contents:

use anchor_lang::prelude::*;

declare_id!("YOUR_PROGRAM_ID_HERE");

#[program]
pub mod my_counter {
    use super::*;

    pub fn initialize(ctx: Context<Initialize>) -> Result<()> {
        let counter = &mut ctx.accounts.counter;
        counter.count = 0;
        counter.authority = ctx.accounts.authority.key();
        msg!("Counter initialized with count: 0");
        Ok(())
    }

    pub fn increment(ctx: Context<Increment>) -> Result<()> {
        let counter = &mut ctx.accounts.counter;
        counter.count += 1;
        msg!("Counter incremented to: {}", counter.count);
        Ok(())
    }
}

#[derive(Accounts)]
pub struct Initialize<'info> {
    #[account(
        init,
        payer = authority,
        space = 8 + Counter::INIT_SPACE
    )]
    pub counter: Account<'info, Counter>,
    #[account(mut)]
    pub authority: Signer<'info>,
    pub system_program: Program<'info, System>,
}

#[derive(Accounts)]
pub struct Increment<'info> {
    #[account(
        mut,
        has_one = authority
    )]
    pub counter: Account<'info, Counter>,
    pub authority: Signer<'info>,
}

#[account]
#[derive(InitSpace)]
pub struct Counter {
    pub count: u64,
    pub authority: Pubkey,
}

What's happening here:

declare_id! sets your program's address (Anchor generates this)
#[program] defines the instruction handlers — initialize creates the counter, increment adds 1
#[derive(Accounts)] structs define what accounts each instruction expects and validates them automatically
#[account] defines the data structure stored on-chain
has_one = authority ensures only the original creator can increment — Anchor checks this automatically
space = 8 + Counter::INIT_SPACE allocates storage: 8 bytes for Anchor's discriminator + the struct size

Build and Deploy

# Build the program
anchor build

# Get the generated program ID
solana address -k target/deploy/my_counter-keypair.json

# Update declare_id! in lib.rs and Anchor.toml with this address

# Deploy to devnet
anchor deploy

Write a Test

Open tests/my_counter.ts:

import * as anchor from "@coral-xyz/anchor";
import { Program } from "@coral-xyz/anchor";
import { MyCounter } from "../target/types/my_counter";
import { expect } from "chai";

describe("my_counter", () => {
  const provider = anchor.AnchorProvider.env();
  anchor.setProvider(provider);
  const program = anchor.workspace.MyCounter as Program<MyCounter>;
  const counter = anchor.web3.Keypair.generate();

  it("Initializes the counter", async () => {
    await program.methods
      .initialize()
      .accounts({
        counter: counter.publicKey,
        authority: provider.wallet.publicKey,
        systemProgram: anchor.web3.SystemProgram.programId,
      })
      .signers([counter])
      .rpc();

    const account = await program.account.counter.fetch(counter.publicKey);
    expect(account.count.toNumber()).to.equal(0);
  });

  it("Increments the counter", async () => {
    await program.methods
      .increment()
      .accounts({
        counter: counter.publicKey,
        authority: provider.wallet.publicKey,
      })
      .rpc();

    const account = await program.account.counter.fetch(counter.publicKey);
    expect(account.count.toNumber()).to.equal(1);
  });
});

Run the tests:

anchor test

If everything passes, congratulations — you just built, deployed, and tested a Solana program.

Essential Developer Tools

RPC Providers

Your application needs to communicate with the Solana network via RPC (Remote Procedure Call) nodes. The free public RPC endpoints are rate-limited and unreliable. For any serious development, use a dedicated provider:

Helius — The most popular Solana-specific RPC provider. Offers standard RPC plus enhanced APIs (DAS for NFTs, webhooks, transaction parsing). Free tier includes 100K requests/day. Helius also provides Solana-specific tooling that generic providers don't, like compressed NFT APIs and priority fee estimation.

Alchemy — Multi-chain RPC provider with strong Solana support. Good if you're also building on Ethereum or other chains. Offers enhanced APIs, webhooks, and a solid dashboard. Free tier available.

QuickNode — Another multi-chain option with Solana support. Offers add-ons like NFT APIs, token APIs, and marketplace data. Free tier with 10M API credits/month.

Which to pick? If you're building exclusively on Solana, Helius is the go-to — their Solana-specific features (DAS API, transaction webhooks, priority fee API) are unmatched. If you need multi-chain support, Alchemy or QuickNode are solid choices.

Other Essential Tools

Solana Explorer (explorer.solana.com): Inspect transactions, accounts, and programs on mainnet, devnet, and testnet. Essential for debugging.

Solana Playground (beta.solpg.io): Browser-based IDE for writing, building, and deploying Solana programs without any local setup. Great for quick prototyping.

Metaplex: If you're building anything involving NFTs (standard or compressed), Metaplex provides the standard program suite and SDKs.

Clockwork / Squads: For automating on-chain actions (Clockwork) or multisig program management (Squads).

Key Concepts You'll Encounter

Program Derived Addresses (PDAs)

PDAs are deterministic addresses derived from a program ID and some seeds (like a user's public key). They don't have private keys, so only the program can sign for them. PDAs are how you create program-owned accounts with predictable addresses.

// Finding a PDA
let (pda, bump) = Pubkey::find_program_address(
    &[b"user-stats", user.key().as_ref()],
    ctx.program_id,
);

You'll use PDAs constantly. They're how programs store per-user data, manage token vaults, and create authority over assets.

Cross-Program Invocations (CPIs)

Solana programs can call other programs. This is how composability works — your program can call the Token program to transfer tokens, call the System program to create accounts, or call another custom program.

// CPI to transfer SOL
anchor_lang::system_program::transfer(
    CpiContext::new(
        ctx.accounts.system_program.to_account_info(),
        anchor_lang::system_program::Transfer {
            from: ctx.accounts.user.to_account_info(),
            to: ctx.accounts.treasury.to_account_info(),
        },
    ),
    amount,
)?;

Compute Units and Priority Fees

Every Solana transaction has a compute budget (default 200,000 compute units, max 1.4M). Complex operations consume more compute units. If your program exceeds the budget, the transaction fails.

Priority fees let you pay extra to incentivize validators to include your transaction sooner. During network congestion, priority fees are essential. You set them on the client side:

const modifyComputeUnits = ComputeBudgetProgram.setComputeUnitLimit({
  units: 300_000,
});
const addPriorityFee = ComputeBudgetProgram.setComputeUnitPrice({
  microLamports: 10_000,
});

Token Program

The SPL Token program handles all fungible tokens on Solana. You'll interact with it whenever your program needs to mint tokens, transfer them, or manage token accounts. Anchor provides convenient wrappers via anchor-spl.

In 2026, you should also be aware of Token Extensions (Token-2022 program) — an upgraded token standard that supports features like transfer fees, confidential transfers, and permanent delegates natively.

Security Considerations

Solana programs have a different vulnerability surface than Ethereum contracts. Common issues to watch for:

Missing signer checks: Always verify that the expected party signed the transaction. Anchor's Signer<'info> type handles this, but in native Rust you must check account.is_signer manually
Missing owner checks: Verify that accounts are owned by the expected program. An attacker could pass in a fake account with the right data layout but owned by a different program. Anchor's Account<'info, T> type checks this automatically
Integer overflow/underflow: Rust panics on overflow in debug mode but wraps in release mode. Use checked arithmetic (checked_add, checked_sub) or Anchor's built-in overflow protection
Reinitialization attacks: Prevent an account from being initialized twice. Anchor's init constraint handles this, but if you're using native Rust, check for existing data
PDA bump seed canonicalization: Always use find_program_address which returns the canonical bump. Storing and reusing the bump is fine, but don't accept arbitrary bumps from users

Learning Resources

The best resources for learning Solana development:

Solana Cookbook (solanacookbook.com): Practical recipes for common tasks. The single best reference for "how do I do X on Solana"
Anchor Book (book.anchor-lang.com): Official Anchor documentation. Read this cover to cover if you're using Anchor
Solana Developer Docs (solana.com/docs): Official documentation, including architecture deep dives and API references
Buildspace / Solana Bootcamp: Interactive courses that walk you through building projects
UnboxedSoftware courses: Comprehensive video courses on Solana development (free on GitHub)
Solana Stack Exchange: For specific questions, the Solana Stack Exchange is actively monitored by core developers

From Tutorial to Production

Once you've built your first program and understand the core concepts, here's the path to production:

Audit your code: Before deploying to mainnet with real funds, get a security audit. Common options: OtterSec, Neodyme, MadShield
Use a proper RPC: Set up Helius or QuickNode for reliable mainnet access
Implement priority fees: Your frontend should dynamically estimate priority fees to ensure transactions land during congestion
Error handling: Implement proper error codes and messages. Anchor's #[error_code] enum makes this straightforward
Testing: Write comprehensive tests. Use bankrun for fast local testing without spinning up a validator
Monitoring: Set up webhooks (Helius offers these) to monitor your program's transactions in real-time

Building on Solana has a steeper initial learning curve than Ethereum (Rust vs. Solidity), but the resulting applications are faster, cheaper, and can handle real-world scale. The ecosystem is mature, the tooling is solid, and there's a strong developer community. If you've been hesitant to start — now is the time.