Jshookmcp MCP Server

by vmoranv Your server? Claim it

local only

Jshookmcp runs on your own machine — the client starts it, so there is no endpoint to ping. 922 installs a week from npm. Last commit 2 Nov 2026.

Search-first MCP server for JavaScript reverse engineering: 735 tools across 36 domains.

Installs per day peak 599 · avg 135 · +52% w/w

a month agotoday

922

Installs / week

npm · @jshookmcp/jshook

2 095

Stars

0 open issues

2 Nov 2026

Last commit

3 releases in 90 days

AGPL-3.0

License

TypeScript

What the code does

We read the source, 23 h ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

A line of code looks encrypted src/server/ToolRouter.intent.ts:33

  /(browser|page|navigate|click|type|screenshot|scrape|network|request|response|api|traffic|hook|capture|intercept|monitor|浏览器|页面|导航|点击|输入|截图|爬取|网络|请求|响应|接口|流量|抓包|拦截|监控)/i;

Checks whether it runs in a sandbox src/server/domains/syscall-hook/definitions.ts:214, src/server/domains/syscall-hook/handlers/pattern-detect.ts:58, src/native/syscall/AntiAnalysis.ts:63 и ещё 2

          'engineering: anti-debug probes (ptrace / IsDebuggerPresent), system ' +

Runs an external command packages/extension-sdk/src/bridges/shared.ts:154, src/modules/v8-inspector/NativeBytecodePrinter.ts:127, src/modules/v8-inspector/TurboFanTraceCollector.ts:137 и ещё 14

    const child = spawn(command, args, {

Executes code built at runtime src/server/domains/exploit-dev/handlers/rop-builder.ts:544, src/server/domains/browser/handlers/safe-code-transform.ts:90

            const val = model.eval(decl);

Builds a file path from a variable src/server/domains/extension-registry/handlers.impl.ts:454

        .map((rel) => path.join(packageDir, rel))

Known vulnerability in the package @jshookmcp/jshook · GHSA-c5r6-m4mr-8q5j

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add jshookmcp -- npx -y @jshookmcp/jshook

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "jshookmcp": {
      "command": "npx",
      "args": [
        "-y",
        "@jshookmcp/jshook"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.jshookmcp]
command = "npx"
args = ["-y", "@jshookmcp/jshook"]

.cursor/mcp.json

{
  "mcpServers": {
    "jshookmcp": {
      "command": "npx",
      "args": [
        "-y",
        "@jshookmcp/jshook"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "jshookmcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@jshookmcp/jshook"
      ]
    }
  }
}

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Jshookmcp — questions

Answers built from our own checks of this server.

Why is there no uptime for Jshookmcp?

Jshookmcp runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @jshookmcp/jshook was installed 922 times last week.

How do I connect Jshookmcp?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls @jshookmcp/jshook straight from npm; nothing to host, nothing to sign up for.

How many people use Jshookmcp?

The npm package @jshookmcp/jshook was installed 922 times in the last week. Week over week that is +52%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Jshookmcp open source?

Yes — it is published under the AGPL-3.0 licence, written in TypeScript and 2 095 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.