Solana Program Library (SPL)

What Is the Solana Program Library (SPL)?

Solana Program Library (SPL) is a collection of open-source, on-chain programs developed by Solana Labs. It provides standardized infrastructure for the Solana network.

SPL Token Program

Its most well-known component is its token program that handles the issuance, transfer, and burning of tokens across the network. This standardization ensures consistency, interoperability, and ease of integration across various applications and platforms within the Solana ecosystem. 

Key Features of SPL

Interoperability

Composability

Composability is a crucial aspect of SPL, allowing developers to create innovative and complex applications by reusing existing SPL-compliant components. This accelerates the development process and encourages the exploration of new use cases within the Solana ecosystem.

Efficiency

SPL can enhance the efficiency of token-related operations on the Solana blockchain. Smart contracts and decentralized applications can interact with SPL-compliant tokens more effectively, thanks to the standardized features and functions provided by the SPL token standard.

Token-2022

In 2022, Solana developers introduced a second token program, commonly known as Token-2022 or the Token Extensions program. It uses the same account model as the original token program and adds optional extensions, such as transfer fees, transfer hooks, non-transferable tokens, and on-chain metadata. The original SPL token program remains in widespread use, and most wallets and applications treat both programs as part of a single token framework on Solana.

What SPL Tokens Can Represent

Adoption of the standard has been substantial. In early September 2026, Solana set a record with more than 263,000 new SPL tokens created in a single day, illustrating how routine token issuance has become on the network. 

As the Solana ecosystem grows, SPL remains fundamental to enabling developers to build diverse and innovative applications on the blockchain.