# Lighthouse MCP (MCP server)

> Lighthouse MCP is an MCP server that wraps around Google's Lighthouse tool to help measure various performance metrics for web pages. This server is available in the Model Context Protocol Registry. Install it using your MCP client or Claude Desktop. It has 210 GitHub stars, is released under the MIT license and runs locally with npx -y lighthouse-mcp.

An MCP server that wraps around Google's Lighthouse tool to help measure various performance metrics for web pages. This server is available in the Model Context Protocol Registry. Install it using your MCP client or Claude Desktop.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/priyankark/lighthouse-mcp |
| GitHub stars | 210 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: lighthouse-mcp |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Web & browsing |
| Latest release | v0.1.17 (Sep 13, 2026) |
| Last commit | Sep 13, 2026 |
| MCP registry name | io.github.priyankark/lighthouse-mcp |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "lighthouse-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lighthouse-mcp"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio lighthouse-mcp -- npx -y lighthouse-mcp
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "lighthouse-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "lighthouse-mcp"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "lighthouse-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "lighthouse-mcp"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

## Tools

- `run_audit`: Run a comprehensive Lighthouse audit on a URL.
- `categories`: Array of categories to audit (defaults to all)
- `device`: Device to emulate (defaults to "mobile")
- `throttling`: Whether to apply network throttling (defaults to true)
- `get_performance_score`: Get just the performance score for a URL.

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