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.
We read the source, 22 h ago · rules 3dff92dd89df
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.
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.
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 mcp add ui-debugger-mcp -- npx -y @developerz.ai/ui-debugger-mcp
{
"mcpServers": {
"ui-debugger-mcp": {
"args": [
"-y",
"@developerz.ai/ui-debugger-mcp"
],
"command": "npx"
}
}
}
[mcp_servers.ui-debugger-mcp]
command = "npx"
args = ["-y", "@developerz.ai/ui-debugger-mcp"]
{
"mcpServers": {
"ui-debugger-mcp": {
"args": [
"-y",
"@developerz.ai/ui-debugger-mcp"
],
"command": "npx"
}
}
}
{
"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.
MCP server for Safari DevTools — browser debugging and automation for AI coding agents
MCP server for DoorDash - let AI agents order food delivery autonomously with browser-based ordering
MCP server for browser and desktop automation: OCR, image recognition, real mouse and keyboard input
Native macOS browser exposing an MCP server so AI agents can drive a real WKWebView.
MCP server for JavaScript reverse engineering and browser debugging.
MCP server for JavaScript reverse engineering and browser debugging.
AI-native browser runtime for autonomous agents with human-in-the-loop supervision
MCP server for DebugAI. Browser sign-in, auto client setup, no key pasting.
Answers built from our own checks of this server.