How do I install the playwright mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `LIGHTHOUSE_LAMBDATEST`, `LT_ACCESS_KEY` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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Playwright MCP Server

Playwright Lighthouse Audit

Local serverstdioGo

What is the Playwright MCP Server?

Playwright Lighthouse Audit

The short version

Lighthouse is a tool developed by Google that analyzes web apps and web pages, collecting modern performance metrics and insights on developer best practices.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
v3.x.x	10
v4.x.x	11

How to install the Playwright MCP Server

{
  "mcpServers": {
    "playwright-lighthouse": {
      "command": "npx",
      "args": ["-y", "playwright-lighthouse"],
      "env": {
        "LIGHTHOUSE_LAMBDATEST": "your-value",
        "LT_ACCESS_KEY": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

Variable	Description	Required
LIGHTHOUSE_LAMBDATEST	Configuration value read at startup.	Optional
LT_ACCESS_KEY	Credential the server authenticates with.	Yes

Example prompts to try

“Use Playwright to v3.x.x.”
“Use Playwright to v4.x.x.”
“Use Playwright to Installation.”

Frequently asked questions

Playwright Lighthouse Audit Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.

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