rust-ffi

Generate safe Rust FFI bindings for C and C++ libraries.

44|7|Updated Jan 22, 2026
One-click install
npx skills add https://github.com/huiali/rust-skills --skill rust-ffi-huiali
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: rust-ffi
Source: https://github.com/huiali/rust-skills/tree/main/.codex/skills/rust-ffi
Command: npx skills add https://github.com/huiali/rust-skills --skill rust-ffi-huiali

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill provides robust patterns and tools for safely integrating Rust code with C and C++ libraries, ensuring reliable cross-language communication and data exchange.

Core Features & Use Cases

  • Safe FFI Bindings: Generate and manage bindings using tools like bindgen and cbindgen.
  • Data Type Mapping: Understand and correctly map Rust and C/C++ data types.
  • Memory Management: Implement clear ownership and memory deallocation strategies across language boundaries.
  • Error & Panic Handling: Prevent undefined behavior by safely handling errors and panics at FFI boundaries.
  • C++ Interop: Utilize libraries like cxx for seamless C++ integration, including exception handling.
  • Use Case: Integrate a high-performance Rust library into an existing C++ application, or expose Rust functionality to Python via FFI.

Quick Start

Use the rust-ffi skill to generate C bindings for your Rust library using cbindgen.

Frequently Asked Questions about rust-ffi

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

FAQPage Schema
How do I generate safe C bindings for a Rust library?

To generate safe C bindings for a Rust library, use cbindgen to produce C headers from Rust source and establish a safe Foreign Function Interface boundary for cross-language data exchange.

What is the best way to handle memory management across Rust and C++ boundaries?

Handling memory management across Rust and C++ boundaries requires implementing clear ownership and memory deallocation protocols to ensure safe data type mapping and prevent undefined behavior during cross-language integration.

Can I use the cxx library for C++ interoperability with Rust?

Yes, you can use the cxx library for C++ interoperability with Rust to achieve seamless integration, enabling safe data type mapping, robust error handling, and management of C++ exceptions at the FFI boundary.

How do you safely handle panics and errors at a Rust FFI boundary?

Safely handling panics and errors at a Rust FFI boundary involves implementing robust error and panic handling strategies to prevent undefined behavior and ensure reliable cross-language communication when integrating Rust code with C or C++ libraries.

Does Rust FFI support integrating high-performance Rust code into existing C++ applications?

Yes, Rust FFI supports integrating high-performance Rust code into existing C++ applications by providing safe binding generation, data type mapping, and memory management protocols using tools like bindgen, cbindgen, and cxx.

What are the limitations of using unsafe Rust for C/C++ interoperability?

Using unsafe Rust for C/C++ interoperability introduces risks of undefined behavior if panics and errors are not properly handled, requiring strict memory management protocols and safe binding generation to maintain reliable cross-language communication.