Apex SDK Protocol

[kherldhussein]

Project Abstract

Apex SDK Protocol is a unified Rust SDK that provides compile-time safe, ergonomic APIs for multichain development, focused on Polkadot's hybrid parachains (Moonbeam, Astar) and Substrate-EVM interoperability. By composing subxt and alloy into a single consistent interface, it eliminates toolchain fragmentation, reduces hybrid integration time from weeks to days, and enables faster production of cross-chain applications such as DeFi protocols, indexers, arbitrage bots, and asset management tools.Building on the existing v0.1.4 release, the project delivers enhanced cross-chain primitives (including XCM support), comprehensive documentation, tutorials, and community tooling to accelerate Rust developer onboarding and drive growth across Polkadot's parachain ecosystem.

Grant level

• Level 1: Up to $10,000, 2 approvals
• Level 2: Up to $30,000, 3 approvals
• Level 3: Unlimited, 5 approvals (for >$100k: Web3 Foundation Council approval)

Application Checklist

• The application template has been copied and aptly renamed (project_name.md).
• I have read the application guidelines.
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• The software delivered for this grant will be released under an open-source license specified in the application.
• The initial PR contains only one commit (squash and force-push if needed).
• The grant will only be announced once the first milestone has been accepted (see the announcement guidelines).
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[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[kherldhussein]

I have read and hereby sign the Contributor License Agreement.

[keeganquigley]

Hi @kherldhussein thanks for your application. As Polkadot matures and moves away from the protocol development phase into this new phase of product design, I'm kind of skeptical of another SDK since they typically try to set a standard, and therefore run the risk of not being adapted. Have you already talked to others that have experienced pain points with subxt and if there is a huge need for this?