QuipNetwork/polkadot-sdkFork

The Parity Polkadot Blockchain SDK

AI summary: The official SDK for building interoperable blockchains on the Polkadot network.

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No licenseCreated Apr 2, 2026Last push 5d ago+-7 this month

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since Apr 5, 2026
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5.5K stars as of Aug 7, 2026, tracked back to Apr 5, 2026. Historical curve reconstructed from public GitHub event archives, calibrated to the current total.

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  • Community-driven

    ~848 contributors

What polkadot-sdk does

The Polkadot SDK provides all the necessary components, such as Substrate and Cumulus, to build custom blockchains (parachains) that can connect to the Polkadot relay chain. It enables developers to create highly customizable, scalable, and secure networks that can interoperate with other chains. The SDK handles complex consensus, networking, and state transition logic, allowing developers to focus on application-specific features.

Designed for blockchain developers and infrastructure engineers building decentralized networks and Web3 applications. Requires strong knowledge of Rust and distributed systems.

  • Substrate Framework: A modular framework for building custom blockchains.
  • Cumulus Integration: Tools to connect Substrate-based chains to the Polkadot network.
  • WASM Runtime: Supports compiling blockchain runtimes to WebAssembly for seamless upgrades.
  • PolkaVM Support: Next-generation virtual machine for executing smart contracts and runtimes.

Where teams use it

Building Custom Blockchains

Developers use the SDK to create specialized blockchains with custom consensus and tokenomics.

Deploying Parachains

Projects build parachains that plug into Polkadot's shared security and interoperability features.

Cross-Chain Applications

Enables the creation of decentralized applications that communicate across different blockchains.

Getting started: curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/scripts/getting-started.sh | bash

README

master branch

SDK Logo SDK Logo

Polkadot SDK

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The Polkadot SDK repository provides all the components needed to start building on the Polkadot network, a multi-chain blockchain platform that enables different blockchains to interoperate and share information in a secure and scalable way.

⚡ Quickstart

If you want to get an example node running quickly you can execute the following getting started script:

curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/scripts/getting-started.sh | bash

👩🏽‍💻 Building

In order to build this project you need to install some dependencies, follow the instructions in this guide.

🎯 Build targets

When building full runtimes, the WASM builder takes care of all required configuration.
For individual crates, however, there are a few caveats when targeting no_std.

WASM

Set RUSTFLAGS="--cfg substrate_runtime" when building for WASM. See the WASM build in the Polkadot SDK Documentation.

PolkaVM

PolkaVM builds require some riscv32 or riscv64 target architecture.
See the CI example: RiscV-build.

📚 Documentation

🚀 Releases

Current Stable Release  Next Stable Release

The Polkadot SDK is released every three months as a Polkadot stableYYMM release. Each stable release is supported for one year with patches. See the next upcoming versions in the Release Registry and more docs in RELEASE.md.

You can use psvm to update all dependencies to a specific version without needing to manually select the correct version for each crate.

🛠️ Tooling

Polkadot SDK Version Manager: A simple tool to manage and update the Polkadot SDK dependencies in any Cargo.toml file. It will automatically update the Polkadot SDK dependencies to their correct crates.io version.

🔐 Security

The security policy and procedures can be found in docs/contributor/SECURITY.md.

🤍 Contributing & Code of Conduct

Ensure you follow our contribution guidelines. In every interaction and contribution, this project adheres to the Contributor Covenant Code of Conduct.

👾 Ready to Contribute?

Take a look at the issues labeled with mentor (or alternatively this page, created by one of the maintainers) label to get started! We always recognize valuable contributions by proposing an on-chain tip to the Polkadot network as a token of our appreciation.

Polkadot Fellowship

Development in this repo usually goes hand in hand with the fellowship organization. In short, this repository provides all the SDK pieces needed to build both Polkadot and its parachains. But, the actual Polkadot runtime lives in the fellowship/runtimes repository. Read more about the fellowship, this separation, the RFC process here.

History

This repository is the amalgamation of 3 separate repositories that used to make up Polkadot SDK, namely Substrate, Polkadot and Cumulus. Read more about the merge and its history here.

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