Features

• 🔥 Fast dev mode and hot reload — addfox dev runs watch, rebuilds on change, and hot-reloads the extension in the browser; the browser launches automatically; same bundle as production.
• 📦 Auto-generated zip — After addfox build, output is packed into a zip under .addfox by default; one command for both folder and store-ready zip.
• 📁 File-based entries — Entries are discovered from app/ layout (background, content, popup, options, sidepanel, devtools); override or add custom entries in config when needed.
• 🌐 Many Chromium browsers and Firefox — Use -b chrome|edge|brave|vivaldi|opera|firefox|... to target Chrome, Edge, Brave, Vivaldi, Opera, Arc, Yandex, or Firefox; manifest can be split per browser.
• ⚛️ Framework-agnostic — Vue, React, Svelte, Solid, or vanilla; TypeScript or JavaScript; choose in scaffold or add the plugin you need.
• 🤖 AI-friendly error output — Enable --debug for a dev-only error panel with per-entry errors, Copy prompt, Ask ChatGPT, and Ask Cursor in one click.
• 🧪 Rstest support — Run addfox test for unit and e2e tests; arguments are forwarded to Rstest.
• 📊 Rsdoctor bundle analysis — Add --report to build or dev to open the Rsdoctor analysis report after the build.
• 🧩 Full Skills support — Install addfox/skills via create-addfox-app or skills add; AI workflow modules in .agents/skills/.
• 🔐 Env variable support — .env is loaded; envPrefix controls which vars are exposed to the extension (e.g. PUBLIC_).

Install & use

New project:

pnpm create addfox-app
# or: npx create-addfox-app

Choose framework (Vanilla / Vue / React / Preact / Svelte / Solid), language, package manager, entries, and optional Skills. A full layout and addfox.config are generated.

Existing project:

pnpm add -D addfox

Add addfox.config.ts (or .js / .mjs) in the project root and entries under app/ (or appDir). Then:

• addfox dev — dev with watch + HMR
• addfox build — output to .addfox/extension (and optional zip)

Use -b chrome or -b firefox to target a browser.

Full docs, config reference, and examples: https://addfox.dev
Skills (AI workflow modules): https://github.com/addfox/skills