Rust crates providing client-side and on-chain interfaces for SPL programs. Key crates: `spl-token` (token instructions and state), `spl-associated-token-account` (ATA creation), `spl-memo` (memo instruction), `spl-token-2022` (Token Extensions). These crates provide instruction builders and state deserialization for interacting with SPL programs.
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Rust crates providing client-side and on-chain interfaces for SPL programs. Key crates: `spl-token` (token instructions and state), `spl-associated-token-account` (ATA creation), `spl-memo` (memo instruction), `spl-token-2022` (Token Extensions). These crates provide instruction builders and state deserialization for interacting with SPL programs.
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SPL Crates (spl-token, spl-associated-token-account) (spl-crates) Category: Developer Tools Definition: Rust crates providing client-side and on-chain interfaces for SPL programs. Key crates: `spl-token` (token instructions and state), `spl-associated-token-account` (ATA creation), `spl-memo` (memo instruction), `spl-token-2022` (Token Extensions). These crates provide instruction builders and state deserialization for interacting with SPL programs. Related: SPL Token Program, Associated Token Account (ATA)
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The original Solana Program Library token program (TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA) that implements fungible and non-fungible token operations. It manages mints (token definitions) and token accounts (balances). Core instructions include InitializeMint, MintTo, Transfer, Burn, Approve (delegation), and Revoke. All SPL tokens on mainnet before Token-2022 use this program.
A deterministically derived token account for a given wallet and mint, using the PDA seeds [wallet, token_program, mint]. ATAs provide a canonical address so anyone can send tokens to a wallet without the recipient creating an account first. The ATA program creates the account on first use, funded by the sender.
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The Anchor macro applied to structs to define on-chain account data layouts. `#[account]` auto-derives Borsh serialization, adds an 8-byte discriminator prefix (SHA-256 of 'account:<Name>'), and implements space calculation. Optional attributes: `#[account(zero_copy)]` for zero-copy deserialization of large accounts.
Tool or library that converts raw on-chain account bytes into structured data using program-specific schemas. Anchor provides automatic deserialization via its IDL. For non-Anchor programs, developers use Borsh, custom byte parsing, or tools like Codama-generated clients to interpret account data.
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The original Solana Program Library token program (TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA) that implements fungible and non-fungible token operations. It manages mints (token definitions) and token accounts (balances). Core instructions include InitializeMint, MintTo, Transfer, Burn, Approve (delegation), and Revoke. All SPL tokens on mainnet before Token-2022 use this program.
A deterministically derived token account for a given wallet and mint, using the PDA seeds [wallet, token_program, mint]. ATAs provide a canonical address so anyone can send tokens to a wallet without the recipient creating an account first. The ATA program creates the account on first use, funded by the sender.
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The most popular framework for building Solana programs in Rust. Anchor provides macros (#[program], #[account], #[derive(Accounts)]) that auto-generate boilerplate for account validation, serialization, discriminators, and error handling. It includes a CLI (anchor init/build/test/deploy), IDL generation, and TypeScript client generation. Reduces program code by ~80% compared to native development.
The Anchor macro applied to structs to define on-chain account data layouts. `#[account]` auto-derives Borsh serialization, adds an 8-byte discriminator prefix (SHA-256 of 'account:<Name>'), and implements space calculation. Optional attributes: `#[account(zero_copy)]` for zero-copy deserialization of large accounts.
The Anchor macro that defines the accounts struct for an instruction. Each field specifies an account with validation constraints. Account types include: `Account<'info, T>` (deserialized), `Signer<'info>` (must sign), `Program<'info, T>` (program reference), `SystemAccount<'info>`, and `UncheckedAccount<'info>` (no validation, use carefully).
Declarative validation rules on Anchor account fields. Key constraints: `#[account(mut)]` (writable), `#[account(init, payer=x, space=n)]` (create), `#[account(seeds=[...], bump)]` (PDA validation), `#[account(has_one=field)]` (field equality), `#[account(constraint = expr)]` (custom boolean), `#[account(close=target)]` (close and reclaim rent).