This repo contains Solana onchain programs (referred to as 'Smart Contracts' in other blockchains).
Note
If you're new to Solana, you don't need to create your own programs to perform basic things like making accounts, creating tokens, sending tokens, or minting NFTs. These common tasks are handled with existing programs, for example the System Program (for making account or transferring SOL) or the token program (for creating tokens and NFTs). See the Solana Developer site to learn more.
Each folder includes examples for one or more of the following:
anchor- Written using Anchor, the most popular framework for Solana Development, which uses Rust. Useanchor build && anchor deployto build & deploy the program. Runanchor run testto test it.native- Written using Solana's native Rust crates and vanilla Rust. Usecicd.shto build & deploy the program. Runyarn run testto test it.seahorse- Written using the Seahorse framework, which converts your Python code to Anchor Rust. Useseahorse build && anchor deployto build & deploy the program. Runanchor run testto test it.
If a given example is missing, please send us a PR to add it! Our aim is to have every example available in every option. We'd also love to see more programs involving staking, wrapped tokens, oracles, compression and VRF. Follow the contributing guidelines to keep things consistent.
Basics
Hello World on Solana! A minimal program that logs a greeting.
Store and retrieve data using Solana accounts.
Use a PDA to store global state, making a counter that increments when called.
Save and update per-user state on the blockchain, ensuring users can only update their own information.
Check that the accounts provided in incoming instructions meet particular criteria.
Close an account and get the Lamports back.
Make new accounts on the blockchain.
Invoke an instruction handler from one onchain program in another onchain program.
Use a PDA to pay the rent for the creation of a new account.
Add parameters to an instruction handler and use them.
Store and retrieve state in Solana.
How to store state that changes size in Solana.
Determine the necessary minimum rent by calculating an account's size.
Layout larger Solana onchain programs.
Tokens
Create a token on Solana with a token symbol and icon.
Mint an NFT from inside your own onchain program using the Token and Metaplex Token Metadata programs. Reminder: you don't need your own program just to mint an NFT, see the note at the top of this README.
Mint a Token from inside your own onchain program using the Token program. Reminder: you don't need your own program just to mint an NFT, see the note at the top of this README.
Transfer tokens between accounts
Allow two users to swap digital assets with each other, each getting 100% of what the other has offered due to the power of decentralization!
Mint a Token from inside your own onchain program using the Token program. Reminder: you don't need your own program just to mint an NFT, see the note at the top of this README.
Token Extensions
Create token mints, mint tokens, and transferr tokens using Token Extensions.
Enable CPI guard to prevents certain token action from occurring within CPI (Cross-Program Invocation).
Create new token accounts that are frozen by default.
Create tokens that belong to larger groups of tokens using the Group Pointer extension.
Create tokens whose owning program cannot be changed.
Create tokens that show an 'interest' calculation.
Create tokens where transfers must have a memo describing the transaction attached.
Create tokens that store their onchain metadata inside the token mint, without needing to use or pay for additional programs.
Allow a designated account to close a Mint.
Use multiple Token Extensions at once.
Create tokens that cannot be transferred.
Create tokens that remain under the control of an account, even when transferred elsewhere.
Create tokens with an inbuilt transfer fee.
Compression
Burn compressed NFTs.
Store Metaplex compressed NFTs inside a PDA.
Work with Metaplex compressed NFTs.
Oracles
Use a data source for offchain data (called an Oracle) to perform activities onchain.