Lighthouse MCP

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get_lcp_opportunities

Identify LCP (Largest Contentful Paint) optimization opportunities for websites by analyzing URLs, specifying device type, and setting performance thresholds. Provides actionable insights to improve page load speed.

Instructions

Get LCP optimization opportunities for a website

Input Schema

Name	Required	Description	Default
`device`	No	Device to emulate (default: desktop)	desktop
`includeDetails`	No	Include detailed metrics and recommendations
`threshold`	No	LCP threshold in seconds (default: 2.5)
`url`	Yes	URL to audit

Input Schema (JSON Schema)

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "properties": {
    "device": {
      "default": "desktop",
      "description": "Device to emulate (default: desktop)",
      "enum": [
        "desktop",
        "mobile"
      ],
      "type": "string"
    },
    "includeDetails": {
      "default": false,
      "description": "Include detailed metrics and recommendations",
      "type": "boolean"
    },
    "threshold": {
      "description": "LCP threshold in seconds (default: 2.5)",
      "minimum": 0,
      "type": "number"
    },
    "url": {
      "description": "URL to audit",
      "type": "string"
    }
  },
  "required": [
    "url"
  ],
  "type": "object"
}

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