Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium
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We found WebPerf Snippets in the official MCP registry. Our automated check passed on Nov 1, 2026 (it confirms the server is published and reachable), but no one at CuratedMCP has reviewed its code, permissions or credentials handling. Check what it can access before you give it keys. Scan your machine free to see every MCP server you have installed.
from agents import Agent
from agents.mcp import MCPServerStdio
async with MCPServerStdio(
params={
"command": "npx",
"args": [
"-y",
"webperf-snippets"
]
},
) as server:
agent = Agent(name="Assistant", mcp_servers=[server])| Environment variable | Required | What it is |
|---|---|---|
| CRUX_API_KEYsecret | No | Chrome UX Report API key for the field data of get_crux; the other tools work without it |
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