24 releases (15 breaking)

new 0.22.0 Jul 13, 2024
0.20.0 May 24, 2024
0.17.0 Mar 19, 2024
0.13.0 Dec 13, 2023
0.0.0 Nov 21, 2022

#1152 in Magic Beans

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Unlicense and GPL-3.0-only

69K SLoC

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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.

📚 Documentation

🚀 Releases

[!NOTE] Our release process is still Work-In-Progress and may not yet reflect the aspired outline here.

The Polkadot-SDK has two release channels: stable and nightly. Production software is advised to only use stable. nightly is meant for tinkerers to try out the latest features. The detailed release process is described in RELEASE.md.

You can use psvm to manage your Polkadot-SDK dependency versions in downstream projects.

😌 Stable

stable releases have a support duration of three months. In this period, the release will not have any breaking changes. It will receive bug fixes, security fixes, performance fixes and new non-breaking features on a two week cadence.

🤠 Nightly

nightly releases are released every night from the master branch, potentially with breaking changes. They have pre-release version numbers in the format major.0.0-nightlyYYMMDD.

🛠️ 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.


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.


The PenPal runtime is designed as a test runtime that can be created with an arbitrary ParaId, such that multiple instances of the parachain can be on the same parent relay. Ensure that you have enough nodes running to support this or you will get scheduling errors.

The PenPal runtime's primary use is for testing interactions between System parachains and other chains that are not trusted teleporters.


~828K SLoC