Your ultimate modular playground

Polkadot SDK offers a highly customizable, chain-agnostic modular architecture and an extensive suite of tools and libraries, enabling next-level blockchain innovation.

One SDK to rule them all

Whether you’re creating a new blockchain or enhancing an existing one, the Polkadot SDK offers a flexible, composable, and comprehensive framework for blockchain development. First proposed by Polkadot and Ethereum Founder Dr. Gavin Wood, it is one of the most used blockchain frameworks in the world.

Flexible

Pick and even hot-swap components ("pallets")—like consensus or finality engine—to fit your needs

Fast

Enjoy rapid transaction times with configurable throughput: Adjust block times, transaction queues, and even transaction fees to fit your use case

Interoperable

Go solo or connect to the Polkadot Chain before your uber eats arrives, leveraging instant cross-chain transactions through a wildly decentralized validator set

Future-proof

Adapt your business logic continuously with forkless runtime upgrades. Be ready for whatever the future throws at you

Built for versatility, designed for scale

The Polkadot SDK takes the hard work out of blockchain development without the limits of other frameworks. Build specialized blockchains or use pre-built modules to add battle-tested functionality. Use only what makes sense for your project.

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Key features of Polkadot SDK

Polkadot SDK's exhaustive feature set allows you to build blockchain solutions faster, cheaper, and with more freedom than ever before.

Forkless & seamless upgrades

Update blockchain runtime logic without forking the codebase

Highly customizable runtime

Implement runtime in any WebAssembly-targeting language or use open protocols like libp2p and jsonPC for node configuration

Shared security

Inherit Polkadot's battle-tested shared security for your deployed rollups

Versatile & bespoke modules

Streamline development and enhance functionality with 40+ flexible modules, including governance and assets, or create your own custom modules

Robust tooling & support

Enjoy a mature suite of tools designed for smooth development, deployment, monitoring, and debugging

Onchain governance

Ensure maximum freedom for your chain thanks to Polkadot's plug-and-play sovereign governance system for rollups

Powering millions of transactions on 150+ projects

Polkadot SDK's open-source framework gives you free access to a robust codebase developed and used by industry-leading teams building some of the biggest networks today. From Defi to Web3 gaming, DID to NFTs, the possibilities are limitless when powered by Polkadot.

Moonbeam

BitTensor

Midnight

Avail

Aleph Zero

StarkNet Madara

Energy Web

Xx.network

Acurast

Tanssi

InvArch

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Polkadot-ready from day one

Connect effortlessly to the Polkadot Chain and gain access to its shared security mechanism, built-in cross-chain communication capabilities, and an ever-expanding universe of projects.

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Build without limits

Explore popular modules for developers diving into the wild, wonderful world of the Polkadot SDK.

Identity

Democracy

Randomness

Resources

Explore our developer resources for comprehensive support and tools. Explore our developer resources for comprehensive support and tools.

Documentation

Community forum

Code repositories

Tool index

Stack exchange

Substrate now part of Polkadot SDK

Start building

Dive into blockchain development with Polkadot SDK. Customize your projects with modular components, robust tools, and comprehensive support to unleash your creativity.

Start building