Build browser extensions with WXT - a next-gen framework with file-based entrypoints, Vite builds, auto-imports, typed storage with migrations, content script UIs, and multi-browser MV2/MV3 support.

GPL-3.0Auto-check passedDevelopment

Install Wxt

skills CLI
$ npx skills add mengxi-ream/read-frog --skill wxt -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install mengxi-ream/read-frog wxt --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/mengxi-ream/read-frog.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/wxt .claude/skills/wxt && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
wxt
GitHub stars
10k
Token cost
~500 tokens
SKILL.md length
118 words
Files
12 (incl. references)
Skills in repo
9
Repo updated
First seen
Licence
GPL-3.0

At a glance

Build browser extensions with WXT - a next-gen framework with file-based entrypoints, Vite builds, auto-imports, typed storage with migrations, content script UIs, and multi-browser MV2/MV3 support.

  • Tasks that involve Browser extensions
  • SKILL.md covers When to Use, Quick Reference and Most Common Pattern
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Wxt is an agent skill from mengxi-ream/read-frog. Build browser extensions with WXT - a next-gen framework with file-based entrypoints, Vite builds, auto-imports, typed storage with migrations, content script UIs, and multi-browser MV2/MV3 support.

Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. The skill folder holds 12 other files, including reference files (for example `GENERATION.md`, `references/config.md` and `references/content-scripts.md`).

It sits in Development, covering Browser extensions. It works with Vite, Chrome Extensions and React. The repository describes itself as: 🐸 Read Frog - Language Learning & Translate | 🐸 陪读蛙 - 语言学习与翻译. The licence is GPL-3.0.

When your agent uses it

  • Tasks that involve Browser extensions

Example prompts

  • “/wxt”

Requirements

  • Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit 56f29ed. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Wxt loads about 500 tokens when it runs, and up to ~16k if it reads all its reference files. Until then it costs about 51 tokens; SKILL.md has 118 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~51
When it runs · the whole SKILL.md, loaded when a task matches
~500
With references · SKILL.md plus every file in references/, read only if the agent opens them
~16k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from mengxi-ream/read-frog at commit 56f29ed, republished under its GPL-3.0 licence (© mengxi-ream). 118 words, ~500 tokens.

Download SKILL.mdSave it as .claude/skills/wxt/SKILL.md (or your agent's skills folder). This skill also uses 11 other files; get the full folder from GitHub.
name
wxt
description
Build browser extensions with WXT - a next-gen framework with file-based entrypoints, Vite builds, auto-imports, typed storage with migrations, content script UIs, and multi-browser MV2/MV3 support.

WXT - Browser Extension Framework

When to Use

Apply this skill when:

  • Project has wxt.config.ts in root
  • Code uses defineBackground, defineContentScript, defineUnlistedScript
  • package.json has wxt as a dependency
  • Entrypoints directory contains extension entry files
  • Code imports from #imports or wxt/*

Quick Reference

TopicReference
Configuration, manifest, env vars, TypeScriptreferences/config.md
Entrypoints (background, HTML pages, unlisted)references/entrypoints.md
Content scripts (UI, main world, SPA)references/content-scripts.md
Storage API, defineItem, migrations, watchersreferences/storage.md
Messaging (cross-context communication)references/messaging.md
Testing with WxtVitest and fakeBrowserreferences/testing.md
WXT modules (using and creating)references/modules.md
Multi-browser builds and runtime detectionreferences/multi-browser.md
Vue, React, Svelte, Solid setupreferences/frontend-frameworks.md
Common patterns and anti-patternsreferences/patterns.md

Most Common Pattern

ts
// entrypoints/background.ts
export default defineBackground({
  main() {
    // ALL runtime code must be inside main() - cannot be async
    browser.runtime.onInstalled.addListener(() => {
      console.log('Extension installed');
    });
  },
});

Critical: main() cannot be async. Code outside main() runs at build time in Node.js.

© mengxi-ream, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 11 other files (references) in .agents/skills/wxt of mengxi-ream/read-frog.

  • SKILL.md
  • GENERATION.md
  • references/config.md
  • references/content-scripts.md
  • references/entrypoints.md
  • references/frontend-frameworks.md
  • references/messaging.md
  • references/modules.md
  • references/multi-browser.md
  • references/patterns.md
  • references/storage.md
  • references/testing.md

Open the folder on GitHubat commit 56f29ed

Compare with similar skills

Wxt next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Wxt compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Wxt this skillmengxi-ream/read-frog10k—~500Automated safety check: PassGPL-3.0
Crxjssamber/cc-skills228—~2.6kAutomated safety check: PassMIT
Deepseek Automationzhu1090093659/deepseek-pp1.9k—~2.1kAutomated safety check: NotesApache-2.0
Web BridgeAgenticMatrix/coderix279—~2.2kAutomated safety check: WarnNone
Browser Extension Devmobazha/mobazha-unified165—~2kAutomated safety check: PassMPL-2.0
Chrome Extensionericrisco/rsc-harness167—~2.7kAutomated safety check: PassMIT

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Categories

Questions about Wxt

What does Wxt do?

Build browser extensions with WXT - a next-gen framework with file-based entrypoints, Vite builds, auto-imports, typed storage with migrations, content script UIs, and multi-browser MV2/MV3 support. Wxt is an agent skill from mengxi-ream/read-frog. Build browser extensions with WXT - a next-gen framework with file-based entrypoints, Vite builds, auto-imports, typed storage with migrations, content script UIs, and multi-browser MV2/MV3 support.

When should I use Wxt?

Wxt fits situations like: tasks that involve Browser extensions.

How do I install Wxt in Claude Code?

Run `npx skills add mengxi-ream/read-frog --skill wxt -a claude-code`. Or copy the skill folder (.agents/skills/wxt in mengxi-ream/read-frog) into .claude/skills/wxt in your project. Claude Code loads it when a task matches its description.

How do I install Wxt in Codex?

Run `npx skills add mengxi-ream/read-frog --skill wxt -a codex`. Or copy the skill folder (.agents/skills/wxt in mengxi-ream/read-frog) into .agents/skills/wxt in your project. Codex loads it when a task matches its description.

Can I use Wxt in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mengxi-ream/read-frog --skill wxt -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/wxt, .gemini/skills/wxt, .github/skills/wxt and .opencode/skills/wxt in your project.

What does Wxt need to run?

SKILL.md names no scripts, command-line tools or credentials: Wxt is instructions for the agent only. Our summary lists: Node.js.

Does Wxt access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Wxt safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Wxt use?

Wxt is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Wxt use?

About 500 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 15k tokens, read only when the agent opens those files.

What are the alternatives to Wxt?

Skills that share tags, products or a category with Wxt: Crxjs (samber/cc-skills, 228 stars), Deepseek Automation (zhu1090093659/deepseek-pp, 1.9k stars), Web Bridge (AgenticMatrix/coderix, 279 stars) and Browser Extension Dev (mobazha/mobazha-unified, 165 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Wxt?

mengxi-ream (a GitHub user) maintains it in mengxi-ream/read-frog, which has 9,993 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 8, 2026.

Source: mengxi-ream/read-frog on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.