mohi-devhub

Voidwalker — AI skill for Claude Code

AI community

A browser extension + local MCP server that streams localStorage, IndexedDB, cookies, and DOM mutations to Claude, Cursor, and any MCP-compatible AI client.

How to install Voidwalker

This entry records only its repository, not the path inside it, so there is no exact command to give. Open mohi-devhub/voidwalker and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Voidwalker does

A browser extension + local MCP server that streams localStorage, IndexedDB, cookies, and DOM mutations to Claude, Cursor, and any MCP-compatible AI client.

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README

Voidwalker

**Let AI debug your browser state.**

[Issues](https://github.com/mohi-devhub/voidwalker/issues) · [Contributing](CONTRIBUTING.md) · [Changelog](CHANGELOG.md)

![Version](https://img.shields.io/badge/version-1.0.0-informational) ![Node.js](https://img.shields.io/badge/node-%3E%3D18-brightgreen) ![MCP](https://img.shields.io/badge/MCP-compatible-blue) [![Chrome Web Store](https://img.shields.io/badge/Chrome-Web_Store-brightgreen)](https://chromewebstore.google.com/detail/kdcfieaegcbifeiondmgdjkimohkfill?utm_source=item-share-cb) ![Firefox](https://img.shields.io/badge/Firefox-MV2-orange) ![License](https://img.shields.io/badge/license-MIT-lightgrey)

Voidwalker is a browser extension + local MCP server that gives AI agents real-time access to your browser's storage state — localStorage, sessionStorage, IndexedDB, cookies, DOM mutations, and mutation history. The AI can read, search, diff, decode, and write browser storage while you work. No DevTools required.

It is a **drop-in MCP server** for Claude Desktop, Claude Code, Cursor, or any MCP-compatible client — point it at the binary and it just works.

How it works

Browser Tab
    │
    ▼
Content Script  (MAIN world — intercepts storage APIs)
    │  window.postMessage
    ▼
Content Script  (ISOLATED world — relays to background)
    │  chrome.runtime.sendMessage
    ▼
Background Worker / Event Page
    │  WebSocket  ws://127.0.0.1:3695
    ▼
MCP Server  (Node.js — token-authenticated)
    │  stdio transport        │  SSE transport
    ▼                         ▼
Claude Desktop / Code      Cursor / Gemini CLI

All data stays on your machine. The server binds exclusively to `127.0.0.1`.