Your ultimate modular playground

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

Developer Docs

One SDK to power them all

Break free from the constraints of other frameworks. The Polkadot SDK offers a flexible, composable, and comprehensive framework for blockchain development, whether you’re creating a new blockchain or enhancing an existing one.

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 with built-in interoperability, sharing logic without extra trust assumptions

Future-proof

Adapt your architecture as your needs change 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

Go from zero to blockchain before your Uber Eats arrives

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

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

Polkadot-ready from day one

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

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Powering millions of transactions

The Polkadot SDK makes building a blockchain far easier, faster, cheaper, and safer than ever before. This 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. Projects that rely on the Polkadot SDK to power some portion of their chain:

Midnight

BitTensor

Avail

Aleph Zero

StarkNet Madara

Energy Web

Xx.network

Moonbeam

Acurast

Tanssi

InvArch

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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

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

Start building