doublezero

Run `npx skills add malbeclabs/doublezero --all -g -y` in your terminal to install all skills in this repository globally.

It guides reviews of Rust on-chain program code for the DoubleZero Ledger, checking account ownership, PDA validation, arithmetic safety, error handling, and test coverage against the project's real review conventions.

Yes. The skill follows the universal SKILL.md standard and works in Claude Code, Cursor, and other compatible coding environments.

It flags missing owner checks on program accounts, unchecked arithmetic, silent no-op inputs, hand-rolled serialization where borsh derives suffice, and tests that assert generic errors instead of specific ones.

Basic familiarity helps, but the skill explains the borsh serialization model and account validation rules in plain terms so reviewers can apply the checks correctly.