Claude VSC Extension Setup Guide

To add the Performance Insights MCP Server to VSC Claude Extension:

There is no way currently to add MCP servers within the Claude VSC extension UI, you must follow these steps:

1. Install Claude CLI

npm install -g @anthropic-ai/claude-code

2. Run Command

Windows:

claude mcp add --scope user perfmon -- cmd /c npx mcp-remote https://perf.niteco.com/chat-tools/mcp

or you can add this config to your users claude.json file (C:\Users<username>.claude.json):

"mcpServers": {
    "perfmon": {
      "type": "stdio",
      "command": "cmd",
      "args": [
        "/c",
        "npx",
        "mcp-remote",
        "https://perf.niteco.com/chat-tools/mcp"
      ],
      "env": {}
    }
  }

macOS/Linux:

claude mcp add --scope user perfmon -- mcp-remote https://perf.niteco.com/chat-tools/mcpclaude 

or you can add this config to your users claude.json file (~/.claude.json)

"mcpServers": {
  "perfmon": {
    "type": "stdio",
    "command": "npx",
    "args": [
      "mcp-remote",
      "https://perf.niteco.com/chat-tools/mcp"
    ],
    "env": {}
  }
}

3. Reload Developer Window: ctrl+shift+p > Developer: Restart Window.
4. Complete the authentication flow and return to VSC.
5. Check /mcp in Claude VSC extension chat to view available MCP servers and their status.
6. Ask the chat agent to "Get the latest test results for yoursite.com".

Troubleshooting

If the connection isn't working:

• Try reauthenticating.
• Check that the MCP server URL is correct in your Claude configuration.
• Restart VSC after making configuration changes (ctrl+shift+p >** Developer: Restart Window**).
• Check the Claude MCP logs for error details.