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Google PageSpeed Insights is Google’s tool for measuring webpage performance. The Google PageSpeed MCP server lets you run Lighthouse audits, get performance scores, and check Core Web Vitals field data for any URL.

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What Can It Do?

  • Run full PageSpeed analysis to get Lighthouse scores across performance, accessibility, best practices, and SEO
  • Get detailed Lighthouse audits for a specific category with individual audit results and recommendations
  • Check Core Web Vitals field data (LCP, FID, CLS, INP, TTFB) from real-user metrics
  • Analyze for desktop or mobile with locale-specific results

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Where to Use It

Add Google PageSpeed as a tool to any agent. The agent can analyze any URL conversationally and explain the results. To add an MCP tool to your agent:
  1. Open your agent’s configuration
  2. Click Add tools → Connect an app with MCP
  3. Search for the integration and select it
  4. Authenticate with your Google PageSpeed API key
You can control which tools your agent has access to. After adding an integration, click on it to enable or disable specific tools based on what your agent needs.

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In Workflows (Via Agent Node)

For automated pipelines, use an Agent Node with Google PageSpeed tools. This gives you the flexibility of an agent within a deterministic workflow.

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As a Custom MCP Node

You can also create a standalone MCP node for a specific action. This generates a reusable node that performs one task, useful when you need the same operation repeatedly in workflows.
To create a custom MCP node:
  1. Go to your node library and search for the integration
  2. Click Create a node with AI
  3. Describe the specific action you want (e.g., “Run a mobile performance audit on my homepage”)
  4. Test the node and save it for reuse
Custom MCP nodes are single-purpose by design. For tasks that require multiple steps or dynamic decision-making, use an agent instead.

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Available Tools

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Example Prompts

Use these with your agent or in the Agent Node: Full site analysis:
SEO audit:
Core Web Vitals check:
Accessibility review:
Compare strategies:

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Troubleshooting

Agents are smart enough to chain multiple API calls together. For example, asking “What’s wrong with my site’s performance?” will run the analysis, then drill into the performance audits to identify specific issues. If results seem off, check the agent’s step-by-step reasoning.

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Need Help?

Use this integration directly in Claude or Cursor. Connect remotely via the Google PageSpeed MCP server using credentials from your Connectors page.