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Web3.js v2 Kit (@solana/kit utilities)

A collection of utility functions and helpers built on top of @solana/kit (Web3.js v2) that simplify common Solana development patterns such as airdropping, creating accounts, sending and confirming transactions, and working with token accounts. The kit provides higher-level abstractions over the modular v2 API, reducing boilerplate for frequent operations while maintaining the tree-shakeable, functional design of the underlying SDK.

IDweb3js-v2-kit
Plain meaning

Plain meaning

Start with the shortest useful explanation before going deeper.

A collection of utility functions and helpers built on top of @solana/kit (Web3.js v2) that simplify common Solana development patterns such as airdropping, creating accounts, sending and confirming transactions, and working with token accounts. The kit provides higher-level abstractions over the modular v2 API, reducing boilerplate for frequent operations while maintaining the tree-shakeable, functional design of the underlying SDK.

Mental model

Mental model

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Think of it as a tool or abstraction that removes friction from shipping on Solana.

Technical context

Technical context

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Anchor, local validators, explorers, SDKs, and testing workflows.

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Web3.js v2 Kit (@solana/kit utilities) (web3js-v2-kit)
Category: Developer Tools
Definition: A collection of utility functions and helpers built on top of @solana/kit (Web3.js v2) that simplify common Solana development patterns such as airdropping, creating accounts, sending and confirming transactions, and working with token accounts. The kit provides higher-level abstractions over the modular v2 API, reducing boilerplate for frequent operations while maintaining the tree-shakeable, functional design of the underlying SDK.
Related: Web3.js v2 (@solana/kit), Solana Web3.js
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Web3.js v2 (@solana/kit)

The next-generation Solana TypeScript SDK (@solana/kit, formerly @solana/web3.js v2) featuring a modular, functional API. Unlike v1's monolithic classes, v2 uses composable functions and tree-shaking for smaller bundles. Key changes: pipe-based transaction building, codec-based serialization, and native support for versioned transactions. Significantly smaller bundle size than v1.

Open term
Branch

Solana Web3.js

The official JavaScript/TypeScript SDK (@solana/web3.js v1) for building Solana clients. Provides classes: Connection (RPC), PublicKey, Keypair, Transaction, SystemProgram, and more. Used for sending transactions, querying accounts, and subscribing to events. v1 uses a class-based API; v2 (@solana/kit) uses a functional, tree-shakeable design.

RPC (Remote Procedure Call)Transaction
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Developer Tools

Web3.js v2 (@solana/kit)

The next-generation Solana TypeScript SDK (@solana/kit, formerly @solana/web3.js v2) featuring a modular, functional API. Unlike v1's monolithic classes, v2 uses composable functions and tree-shaking for smaller bundles. Key changes: pipe-based transaction building, codec-based serialization, and native support for versioned transactions. Significantly smaller bundle size than v1.

Open term
Developer Tools

Solana Web3.js

The official JavaScript/TypeScript SDK (@solana/web3.js v1) for building Solana clients. Provides classes: Connection (RPC), PublicKey, Keypair, Transaction, SystemProgram, and more. Used for sending transactions, querying accounts, and subscribing to events. v1 uses a class-based API; v2 (@solana/kit) uses a functional, tree-shakeable design.

Open term
Developer Tools

Anchor Framework

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.

Open term
Developer Tools

#[account] Macro (Anchor)

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.

Open term
Commonly confused with

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Developer Toolssolana-web3js-v2

Web3.js v2 (@solana/kit)

The next-generation Solana TypeScript SDK (@solana/kit, formerly @solana/web3.js v2) featuring a modular, functional API. Unlike v1's monolithic classes, v2 uses composable functions and tree-shaking for smaller bundles. Key changes: pipe-based transaction building, codec-based serialization, and native support for versioned transactions. Significantly smaller bundle size than v1.

Alias@solana/kitAliasSolana Kit
Open term
Developer Toolssolana-web3js

Solana Web3.js

The official JavaScript/TypeScript SDK (@solana/web3.js v1) for building Solana clients. Provides classes: Connection (RPC), PublicKey, Keypair, Transaction, SystemProgram, and more. Used for sending transactions, querying accounts, and subscribing to events. v1 uses a class-based API; v2 (@solana/kit) uses a functional, tree-shakeable design.

Alias@solana/web3.js
Open term
Developer Toolssolana-rust-sdk

Solana Rust SDK (solana-sdk)

The Rust crate (solana-sdk) providing types and utilities for building Solana clients and programs. For on-chain programs, use `solana-program` (no-std compatible subset). For off-chain clients, use `solana-sdk` (full features including keypair generation, transaction signing). The SDK includes types like Pubkey, Instruction, Transaction, and Account.

Aliassolana-sdkAliassolana-program
Open term
Related terms

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Developer Toolssolana-web3js-v2

Web3.js v2 (@solana/kit)

The next-generation Solana TypeScript SDK (@solana/kit, formerly @solana/web3.js v2) featuring a modular, functional API. Unlike v1's monolithic classes, v2 uses composable functions and tree-shaking for smaller bundles. Key changes: pipe-based transaction building, codec-based serialization, and native support for versioned transactions. Significantly smaller bundle size than v1.

Open term
Developer Toolssolana-web3js

Solana Web3.js

The official JavaScript/TypeScript SDK (@solana/web3.js v1) for building Solana clients. Provides classes: Connection (RPC), PublicKey, Keypair, Transaction, SystemProgram, and more. Used for sending transactions, querying accounts, and subscribing to events. v1 uses a class-based API; v2 (@solana/kit) uses a functional, tree-shakeable design.

Open term
More in category

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Developer Tools

Anchor Framework

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.

Open term
Developer Tools

#[account] Macro (Anchor)

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.

Open term
Developer Tools

#[derive(Accounts)] (Anchor)

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).

Open term
Developer Tools

Anchor Constraints

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).

Open term