mcpbeat Sign in

UI Debugger MCP Server

by developerz-ai Your server? Claim it
local only

UI Debugger MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 83 installs a week from npm. Last commit 17 Sep 2026.

Autonomous UI debugging MCP server: an agent drives the browser/desktop, reports bugs + UX issues.

Installs per day peak 290 · avg 21 · -73% w/w
a month agotoday
83
Installs / week
npm · @developerz.ai/ui-debugger-mcp
2
Stars
14 open issues
17 Sep 2026
Last commit
0 releases in 90 days
MIT
License
TypeScript

What the code does

We read the source, 22 h ago · rules 3dff92dd89df

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.

      spawn: init.spawn ?? ((bin, args) => spawn(bin, args, { detached: true, stdio: 'ignore' })),

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.

Three servers free · no card

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.

run in your terminal
claude mcp add ui-debugger-mcp -- npx -y @developerz.ai/ui-debugger-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "ui-debugger-mcp": {
      "args": [
        "-y",
        "@developerz.ai/ui-debugger-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.ui-debugger-mcp]
command = "npx"
args = ["-y", "@developerz.ai/ui-debugger-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "ui-debugger-mcp": {
      "args": [
        "-y",
        "@developerz.ai/ui-debugger-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "ui-debugger-mcp": {
      "args": [
        "-y",
        "@developerz.ai/ui-debugger-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: OPENAI_API_KEY (API key for the LLM provider (OpenRouter default)), OPENAI_BASE_URL (Base URL for the LLM provider (defaults to OpenRouter)). The author declared them in the registry entry; get the values from the project itself.

Alternatives to UI Debugger MCP

same job, measured the same way
Safari DevTools MCP
by hayodev

MCP server for Safari DevTools — browser debugging and automation for AI coding agents

55 installs/wk local only
Doordash
by markswendsen-code

MCP server for DoorDash - let AI agents order food delivery autonomously with browser-based ordering

39 installs/wk local only
Ui.Vision MCP
by a9t9

MCP server for browser and desktop automation: OCR, image recognition, real mouse and keyboard input

703 installs/wk local only
MCP Browser
by brainfuel

Native macOS browser exposing an MCP server so AI agents can drive a real WKWebView.

local only
JS Reverse MCP
by yuanhuakk

MCP server for JavaScript reverse engineering and browser debugging.

53 installs/wk local only
JS Reverse MCP
by yuanhuakk

MCP server for JavaScript reverse engineering and browser debugging.

local only
Vessel Browser
by unmodeled-tyler

AI-native browser runtime for autonomous agents with human-in-the-loop supervision

242 installs/wk local only
Debugai MCP
by 1shizaan

MCP server for DebugAI. Browser sign-in, auto client setup, no key pasting.

814 installs/wk local only

UI Debugger MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for UI Debugger MCP?
UI Debugger MCP 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 @developerz.ai/ui-debugger-mcp was installed 83 times last week.
How do I connect UI Debugger MCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @developerz.ai/ui-debugger-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use UI Debugger MCP?
The npm package @developerz.ai/ui-debugger-mcp was installed 83 times in the last week. Week over week that is -73%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is UI Debugger MCP open source?
Yes — it is published under the MIT licence, written in TypeScript, 2 stars on GitHub and 14 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.