Validation Doctor

Diagnostics

1. Chrome DevTools MCP

   • Probe by calling list_pages (may appear as mcp6_list_pages depending on the client).

2. Brave Search MCP

   • Probe by calling brave_web_search with a trivial query and count=1.

Status Report

Setup Snippets

Never just say "install them" — output the exact JSON to paste.

Chrome DevTools (NPX)

Requirements: Node.js v20.19+ and current stable Chrome.

{
  "mcpServers": {
    "chrome-devtools": {
      "command": "npx",
      "args": ["-y", "chrome-devtools-mcp@latest"]
    }
  }
}

Brave Search (NPX)

{
  "mcpServers": {
    "brave-search": {
      "command": "npx",
      "args": ["-y", "@brave/brave-search-mcp-server", "--transport", "stdio"],
      "env": {
        "BRAVE_API_KEY": "YOUR_API_KEY_HERE"
      }
    }
  }
}

Runtime Policy

• If chrome-devtools is unavailable, allow fetch fallback but mark results as Low Confidence.
• If brave-search is unavailable, do not claim competitor positioning; only score the page itself.