diagnose-error

Quick health check on the currently loaded page. Three signals: browser console, Next.js MCP server, visual UI.

Prerequisites

• Next.js 16+ dev server running (for the /_next/mcp step).

• An agent-browser session is already on the target page. Probe with:

  agent-browser get url    # errors if no session; prints URL if alive
  

  If unmet, invoke [[prep-browser-session]] first to bootstrap.

Procedure

1. Browser-side errors