Awawausb Webusb Firefox

Firefox doesn't support WebUSB natively, so if you need navigator.usb to work in Firefox for hardware projects or testing, this is the bridge you want. It's a two-part system: a browser extension plus a Rust-compiled native stub that talks to OS USB APIs through native messaging. Cross-platform (macOS, Linux, Windows) with prebuilt binaries, though you'll need to handle udev rules on Linux or WinUSB drivers on Windows. The setup is a bit fiddly with manifest files and registry keys, but once configured the API matches Chrome's WebUSB exactly. Good for teams that can't force users onto Chromium or need to support Firefox in production hardware tools.

skills.sh installs: 195
GitHub stars: 26
last updated: Jun 3, 2026

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Install

$ npx -y skills add aradotso/trending-skills --skill awawausb-webusb-firefox --agent claude-code

Installs into .claude/skills of the current project.

Files

awawausb — WebUSB Extension for Firefox

Skill by ara.so — Daily 2026 Skills collection.

awawausb adds WebUSB (navigator.usb) to Firefox via a two-part system: a browser extension (.xpi) and a native stub binary (compiled Rust) that communicates over native messaging.

Architecture

Web Page (navigator.usb)
    ↕  WebExtension API
Firefox Extension (extension/)
    ↕  Native Messaging (stdio, JSON-framed)
Native Stub Binary (native-stub/ — Rust)
    ↕  OS USB APIs (WinUSB / libusb / IOKit)
USB Device

Installation (End Users)

1. Install the Extension

Signed release: Download .xpi from GitHub Releases, open in Firefox.
Developer/testing: about:debugging → "This Firefox" → "Load Temporary Add-on…" → select extension/manifest.json.

2. Install the Native Stub

Download and unzip the release archive for your platform, then run:

# Linux / macOS
./install.sh

# Windows
install.bat

Supported platforms: macOS x86_64/ARM64, Linux x86_64/aarch64, Windows AMD64/ARM64.

Building from Source

# Clone
git clone https://github.com/ArcaneNibble/awawausb
cd awawausb/native-stub

SKILL.md on GitHub

Details

Repository: github.com/aradotso/trending-skills
First seen: Jun 3, 2026