Is io.github.nucliweb/webperf-snippets safe to use?

io.github.nucliweb/webperf-snippets has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.

How do I install io.github.nucliweb/webperf-snippets?

io.github.nucliweb/webperf-snippets supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with io.github.nucliweb/webperf-snippets?

io.github.nucliweb/webperf-snippets is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is io.github.nucliweb/webperf-snippets actively maintained?

io.github.nucliweb/webperf-snippets is actively maintained - last commit was 1 day ago.

io.github.nucliweb/webperf-snippets

webperf-snippets

Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium

1.2k/wk GitHub npm

No known CVEs

MIT license

Actively maintained

Last commit 1d ago

Works with most clients

Transport: stdio, sse, http

0 tools

Grade F

MCPpedia last refreshed this data 20h ago

Edit this pageView history

io.github.nucliweb/webperf-snippets is an MCP server that measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 64/100 on MCPpedia's security, maintenance and efficiency rubric.

Browser

Step 1

Install in your client

Config is the same across clients - only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

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

{
  "mcpServers": {
    "io-github-nucliweb-webperf-snippets": {
      "args": [
        "-y",
        "webperf-snippets"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-nucliweb-webperf-snippets)](https://mcppedia.org/s/io-github-nucliweb-webperf-snippets)

Read me

What io.github.nucliweb/webperf-snippets does

Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium

Test This Server

This server supports HTTP transport. Be the first to test it - help the community know if it works.

Loading README…

Scored, not listed

Why this score

Five weighted categories - click any category to see the underlying evidence.

Score breakdown

64/100across 5 weighted dimensions

How we score →

0255075100

−36

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked webperf-snippets against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience - it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.nucliweb/webperf-snippets safe to use?: io.github.nucliweb/webperf-snippets has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.
How do I install io.github.nucliweb/webperf-snippets?: io.github.nucliweb/webperf-snippets supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with io.github.nucliweb/webperf-snippets?: io.github.nucliweb/webperf-snippets is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is io.github.nucliweb/webperf-snippets actively maintained?: io.github.nucliweb/webperf-snippets is actively maintained - last commit was 1 day ago.

Similar servers

Others in browser

View all →

Crw95

Open-source web scraper for AI agents with scrape, crawl, and map tools

1.3k 3

Apify Mcp Server95

Extract data from any website with thousands of scrapers, crawlers, and automations on Apify Store ⚡

16.1k 1

io.github.vmoranv/jshookmcp95

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

2.1k 2

Firecrawl Mcp Server95

Firecrawl, the context API for AI agents: search, scrape, interact with the web, plus paper search.

7.8k 4

MCP Security Weekly

Get CVE alerts and security updates for io.github.nucliweb/webperf-snippets and similar servers.

Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Browser

Step 1

Install in your client

Config is the same across clients - only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

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

{
  "mcpServers": {
    "io-github-nucliweb-webperf-snippets": {
      "args": [
        "-y",
        "webperf-snippets"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-nucliweb-webperf-snippets)](https://mcppedia.org/s/io-github-nucliweb-webperf-snippets)

Read me

What io.github.nucliweb/webperf-snippets does

Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium

Test This Server

This server supports HTTP transport. Be the first to test it - help the community know if it works.

README

WebPerf Snippets

Tested JavaScript snippets that measure and debug web performance. Your AI agent runs them for you, or you run them yourself in DevTools: the same code every time.

AI agents are good at interpreting performance data and unreliable when they write measurement code on the fly. WebPerf Snippets keeps both apart: the measurement is fixed code, tested in CI, that returns structured data, and the agent reasons about the result. The same snippets run in the console, the CLI, the DevTools extension and the Agent Skills, and every one returns an object that follows a single contract (snippets/SCHEMA.md).

→ Why AI audits need deterministic scripts

Run them with an AI agent

You want to	Use
Audit a URL with any agent that has a terminal	The Copy prompt to measure button on each snippet page
Give an agent the snippets as tools	The MCP server
Let the agent drive your Chrome (login, interactions)	The Agent Skills with Chrome DevTools MCP
Run snippets from scripts or CI	The CLI
Give an agent the whole documentation	`llms.txt` (details)

Not sure which snippet to run? Start from the symptom in Which snippet should I use?

Copy prompt to measure

Snippet pages have a Copy prompt to measure button above the code. It copies a prompt that asks any AI agent with a terminal to run that snippet with the CLI on the URL you give it, and to report the value, the cause and the issues. The agent runs the published snippet instead of rewriting it or estimating the result.

MCP server

The CLI includes an MCP server: an agent in any MCP client (Claude Code, Cursor, VS Code, Gemini CLI) calls the snippets and the workflows as tools, on a headless Chromium, and reads the object each one returns. It is listed in the MCP Registry as io.github.nucliweb/webperf-snippets.

claude mcp add webperf -- npx -y webperf-snippets mcp

In Claude Code, the webperf plugin installs the same server:

/plugin install webperf --marketplace nucliweb/webperf-snippets

See the MCP server documentation for other clients, the tools, the resources and prompts, and the CrUX key.

Agent skills

The snippets are packaged as Agent Skills for Claude Code, Cursor, OpenCode, Gemini CLI, VS Code extensions and other compatible agents. With Chrome DevTools MCP, the agent runs the snippets in your browser and rea

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories - click any category to see the underlying evidence.

Score breakdown

64/100across 5 weighted dimensions

How we score →

0255075100

−36

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked webperf-snippets against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience - it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.nucliweb/webperf-snippets safe to use?: io.github.nucliweb/webperf-snippets has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.
How do I install io.github.nucliweb/webperf-snippets?: io.github.nucliweb/webperf-snippets supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with io.github.nucliweb/webperf-snippets?: io.github.nucliweb/webperf-snippets is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is io.github.nucliweb/webperf-snippets actively maintained?: io.github.nucliweb/webperf-snippets is actively maintained - last commit was 1 day ago.