Idea: Precompile Interface Library for PolkaVM

[sacha-l]

Precompile Interface Library for PolkaVM

• 🛠 Track: Smart Contract Development Tools

📝 Summary

Background

PolkaVM exposes custom system-level functionality via precompiled contracts, such as future support for XCM, staking, or governance hooks. Solidity developers need ABI-safe interface wrappers to use these without relying on raw calldata.

Project Summary

Build a Solidity library that defines typed interfaces to Polkadot-specific precompiles. Package as an npm module or GitHub repo that developers can import in Hardhat/Foundry projects.

💡 Value to Polkadot

Encourages developers to integrate advanced chain features safely and predictably. Lowers barrier to using powerful native Polkadot infrastructure from Solidity.

✅ Feasibility (MVP in 3 Days)

• Start with 1–2 known precompiles (e.g. xcmTransact, staking proxy).
• Use mock addresses and ABI from documentation.
• Validate interface against known examples.

⚙️ Proposed Approach

1. Define Solidity interface(s) for precompile functions.
2. Provide usage examples in a Hardhat/Remix project.
3. Add simple test stubs (mock contract calls).
4. Publish code as repo or npm package.

📦 Deliverables

• Solidity interface file(s)
• Example project demonstrating usage
• README with:
  • Method signatures and descriptions
  • Deployment/usage examples