What is the main purpose of the Core/Std Boundary skill?

It helps developers maintain a clean architectural split between platform-agnostic code (core) and platform-dependent code (std) in Rust projects.

Does this skill prevent me from using std in my tests?

No, the skill explicitly allows standard library dependencies within test blocks or test directories to ensure you can still use common testing utilities.

How does it handle async runtimes like Tokio?

It enforces that async runtimes and IO-heavy dependencies remain in the 'std' side, while the core logic remains runtime-independent.

Is this skill specific to embedded development?

While critical for embedded development, it is valuable for any Rust developer building libraries that aim for maximum portability and clean dependency graphs.

Rust Core/Std Boundary Enforcer

Name: Rust Core/Std Boundary Enforcer
Author: j5ik2o

byj5ik2o

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Enforces strict architectural boundaries between no_std core modules and standard library components in Rust projects.

The Core/Std Boundary skill provides specialized guidance for Rust developers to maintain a clean separation between platform-independent 'core' logic and platform-dependent 'std' implementations. It helps Claude identify misplaced dependencies, such as tokio or OS-specific APIs in no_std modules, and suggests architectural patterns like trait-based interfaces to bridge boundaries correctly. This is particularly useful for building portable libraries, embedded systems, or modular applications where runtime independence is a priority.

主な機能

01Audits public APIs to prevent core-to-std leakage

023 GitHub stars

03Validates no_std compliance for core modules

04Identifies and relocates misplaced std/tokio dependencies

05Guides the implementation of traits in core for std-side execution

06Manages test-only exceptions for standard library usage

ユースケース

01Refactoring monolithic Rust libraries into portable no_std cores

02Reviewing pull requests for architectural compliance in system-level projects

03Designing cross-platform crates that require specific IO implementations for different targets

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add j5ik2o/fraktor-rs core-std-boundary

For use in Claude.ai and ChatGPT

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