WebPerf Snippets MCP server

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

Developer tools ★ 1,456 GitHub starsv1.9.0Updated Oct 31, 2026

Install

npm (stdio)npx -y webperf-snippets

JSON for apps that use an mcpServers block (Claude Desktop, Cursor and others):

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

From the server's registry entry. Many servers also need an API key or other settings: check the repository's README before you run it.

About this server

Registry name	`io.github.nucliweb/webperf-snippets`
Repository	github.com/nucliweb/webperf-snippets
Website	webperf-snippets.net
Packages	npm `webperf-snippets`
In the registry since	Oct 31, 2026
GitHub stars	1,456

Listed from the official MCP Registry. We have not reviewed or tested this server; a local server runs code on your machine, so read the repository first.

Use it with

AI agents whose docs say they support MCP.

OpenAI Codex Claude Code OpenCode n8n LangChain Pi OpenClaw LiteLLM LangGraph Cursor GitHub Copilot AI SDK

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