dart-use-ffigen

Generate Dart FFI bindings from native C headers using package:ffigen.

428|29|Updated Feb 25, 2026
One-click install
npx skills add https://github.com/dart-lang/skills --skill dart-use-ffigen
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: dart-use-ffigen
Source: https://github.com/dart-lang/skills/tree/main/skills/dart-use-ffigen
Command: npx skills add https://github.com/dart-lang/skills --skill dart-use-ffigen

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Automates the generation of Dart FFI bindings from native C headers to replace hand-written bindings and reduce errors.

Core Features & Use Cases

  • Automated FFI Bindings: Generates Dart bindings from C headers using package:ffigen, ensuring consistent signatures and types.
  • Best Practices & Constraints: Enforces generator location, header placement, and output structure to support tree-shaking and licensing requirements.
  • Use Case: When integrating a new native library, replace manual bindings with an automated, reproducible binding pipeline.

Quick Start

Run the FFI generator to produce Dart bindings from C headers using package:ffigen.

Frequently Asked Questions about dart-use-ffigen

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

FAQPage Schema
How do I generate Dart FFI bindings from C headers automatically?▼

You can generate Dart FFI bindings from C headers automatically by using package:ffigen to parse native headers and output reproducible Dart signatures, replacing manual dart:ffi code.

What is the best way to replace hand-written dart:ffi bindings?▼

The best way to replace hand-written dart:ffi bindings is to automate the pipeline with package:ffigen, which ensures consistent type signatures and reduces manual coding errors from C headers.

Does ffigen support tree shaking for unused native bindings?▼

Yes, ffigen supports tree shaking by generating a record_use mapping alongside the Dart bindings, ensuring unused native code is removed during the final build.

Where should I place generated FFI bindings in my Dart project?▼

You should place generated FFI bindings under the lib/src/third_party directory to comply with structural constraints, support tree shaking, and meet licensing requirements.

Can I use ffigen to integrate a new native library into Dart?▼

Yes, you can use ffigen to integrate a new native library into Dart by pointing the generator to the C headers and creating an automated, reproducible binding pipeline.

Why does ffigen enforce header placement and output structure?▼

ffigen enforces header placement and output structure to support tree shaking, manage licensing requirements, and ensure the generated Dart bindings are reproducible and maintainable.