playwright-edge-setup

name: playwright-edge-setup description: Reference for configuring Playwright MCP to use Microsoft Edge instead of Chrome. Use when troubleshooting browser errors or reconfiguring the MCP server. user-invocable: false

Playwright MCP Edge Configuration

The problem

Claude Code's Playwright MCP defaults to Chrome. This project requires Microsoft Edge. The /mcp command writes config to ~/.claude.json without --browser msedge, causing Chromium distribution 'chrome' is not found errors.

Where the config lives

Claude Code reads per-project MCP server configs from ~/.claude.json, NOT from ~/.claude/settings.json. The /mcp command writes to ~/.claude.json.

The relevant section is at: projects > "C:/Users/vuquy/code/ez-expense" > mcpServers

Correct config

In ~/.claude.json, the playwright entry must include --browser msedge:

"mcpServers": {
  "playwright": {
    "type": "stdio",
    "command": "cmd",
    "args": ["/c", "npx", "-y", "@playwright/mcp@latest", "--browser", "msedge"]
  }
}

After reinstalling via /mcp

If you remove and re-add the Playwright MCP via /mcp, the --browser msedge args will be lost. Manually edit ~/.claude.json and add "--browser", "msedge" to the end of the args array.

VS Code MCP config

VS Code has its own MCP config at %APPDATA%/Code/User/mcp.json. Keep it consistent:

{
  "servers": {
    "playwright": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@playwright/mcp@latest", "--browser", "msedge"]
    }
  }
}

Future fix

The PLAYWRIGHT_MCP_BROWSER env var is documented on GitHub but not yet released in @playwright/mcp (as of v0.0.68). Once available, the config can use an env field instead.