A standalone skill library for AI agents building browser extensions with the Addfox framework. Use the skills CLI to add these skills with npx skills add.
From your project root, run:
# Add all skills from this repo (e.g. to .cursor/skills/ or .agents/skills/)
npx skills add addfox/skills
# Add only specific skills
npx skills add addfox/skills --skill migrate-to-addfox
npx skills add addfox/skills --skill addfox-best-practices
npx skills add addfox/skills --skill extension-functions-best-practices
npx skills add addfox/skills --skill addfox-debugging
npx skills add addfox/skills --skill addfox-testing
# List available skills before installing
npx skills add addfox/skills --listOr use a full GitHub URL:
npx skills add https://github.com/addfox/skills| Skill | Description |
|---|---|
| migrate-to-addfox | Migrate existing projects to Addfox from WXT, Plasmo, Extension.js, or vanilla (no framework). |
| addfox-best-practices | Best practices for building extensions with Addfox: entry, config, manifest, permissions, cross-platform, frameworks/styles, messaging. |
| extension-functions-best-practices | Practices for extension features: video/audio, recording, screenshots, AI, login, translation; recommends lightweight libs (e.g. Mediabunny) and open-source extensions. |
| addfox-debugging | Debug build and runtime errors: use addfox/rsbuild terminal output, .addfox/error.md, and .addfox/meta.md; use entry, location, message, stack, and front-end-framework to locate and fix issues. |
| addfox-testing | Unit and e2e testing with Rstest: how to configure rstest, when to use unit vs e2e, dependencies (e.g. @rstest/core, playwright, @rstest/browser), file naming, and framework-specific libs (React, Vue, Svelte, Solid). |
.
├── package.json
├── README.md
├── README-zh_CN.md
└── skills/
├── migrate-to-addfox/
│ ├── SKILL.md
│ └── references/
├── addfox-best-practices/
│ ├── SKILL.md
│ ├── reference.md
│ └── rules/
├── extension-functions-best-practices/
│ ├── SKILL.md
│ └── reference.md
├── addfox-debugging/
│ ├── SKILL.md
│ └── reference.md
└── addfox-testing/
├── SKILL.md
└── reference.md
- skills CLI — Add any skill repo with
npx skills add. - Remotion skills — Skill + rules layout reference.
- rstackjs/agent-skills — Multi-skill repo structure reference.