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rust-ffi

Bridge Rust and C code with type-safe FFI and memory management guidelines.

1|1|Updated Feb 4, 2026
Search Tags:#memory management#rust#interoperability#c#ffi
One-click install
npx skills add https://github.com/arxxyr/dotfiles --skill rust-ffi-arxxyr
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: rust-ffi
Source: https://github.com/arxxyr/dotfiles/tree/main/dot_agents/skills/rust-ffi
Command: npx skills add https://github.com/arxxyr/dotfiles --skill rust-ffi-arxxyr

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires bindgen, cbindgen, metrics, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill helps developers safely and efficiently interoperate between Rust and C/C++ code, facilitating gradual migration from C to Rust and enabling Rust to call existing C libraries.

Core Features & Use Cases

  • FFI Sandwich Architecture: Provides a secure layer around C code, allowing function-by-function migration with minimal disruption.
  • Cross-boundary Type Specifications: Defines clear rules for type conversions and data handling across the FFI boundary.
  • Memory Management Guidelines: Implements the "who allocates, who frees" principle to prevent memory leaks and undefined behavior.
  • Observability in FFI: Adds logging, metrics, and alerts to monitor and troubleshoot FFI interactions.

Quick Start

Use the rust-ffi skill to set up FFI for a new Rust project that requires interoperability with a C library.

Frequently Asked Questions about rust-ffi

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I manage memory safely when doing Rust to C interoperability?▼

Memory management in Rust to C interoperability requires strict allocation rules. This Skill enforces the principle where the allocating side must free the memory, preventing leaks and undefined behavior across the FFI boundary.

What is the best way to migrate a C codebase to Rust gradually?▼

Migrating a C codebase to Rust gradually is best achieved using an FFI sandwich architecture. This approach provides a secure layer around C code, allowing function-by-function migration with minimal disruption to the existing system.

How do I ensure type safety when calling C libraries from Rust?▼

Type safety when calling C libraries from Rust is ensured through cross-boundary type specifications. This Skill defines clear rules for type conversions and data handling, utilizing bindgen and cbindgen for type-safe bridging.

Can I add observability and metrics to Rust FFI interactions?▼

Yes, you can add observability to Rust FFI interactions. This Skill includes logging, metrics, and alerts to monitor and troubleshoot FFI operations, ensuring cross-boundary interactions are fully traceable.

Does rust-ffi work with existing C++ library maintainers?▼

rust-ffi works effectively for C and C++ library maintainers. It targets both Rust developers and C/C++ maintainers, focusing on the transition of C to Rust codebases and enabling safe Rust interoperation with existing C libraries.

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