polkadot-sdk

⚡ 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

• Polkadot Documentation Portal
• rust-docs: Where we keep track of the API docs of our Rust crates. Includes:
  • Introduction to each component of the Polkadot SDK: Substrate, FRAME, Cumulus, and XCM
  • Guides, namely how to build your first FRAME pallet
  • Templates for starting a new project.
  • External Resources
• Have a question? You can ask in the Polkadot SDK Developers Chat. Messages from either of these channels are bridged to the other, so you can use whichever one you like.
  • Telegram
  • Matrix
  • Discord
  • Polkadot and Substrate StackExchange

Releases

  

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.