Request utility

User Agent Viewer

Inspect the browser identity and request hints your device sends on first load. Useful for debugging crawlers, analytics filters, device targeting, and support tickets.

Browser

Unknown browser

OS

Unknown OS

Device

Desktop or tablet

Language

Not provided

Header output is limited to non-sensitive diagnostics. Cookies and authorization headers are intentionally not shown.

Current user agent

This is the exact user-agent string received by the server for this page request.

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Client hints

Modern browsers may send these structured hints alongside the classic user-agent string.

No client hints were sent with this request.

Request context

Useful fetch and forwarding details available to the server.

forwarded Host
lilrobots.com
forwarded Proto
https

How to use this

Support checks

Ask a user to send the string when a browser-specific issue is hard to reproduce.

Crawler QA

Compare browser requests against crawler requests when content changes by user agent.

Analytics filters

Confirm what the browser sends before building filters or debugging device segments.

Raw report

Same data as JSON, formatted for developers and bug reports.

{
  "generatedAt": "2026-07-15T20:39:21.324Z",
  "userAgent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "summary": {
    "browser": "Unknown browser",
    "operatingSystem": "Unknown OS",
    "device": "Desktop or tablet",
    "language": "Not provided"
  },
  "clientHints": {
    "brands": null,
    "mobile": null,
    "platform": null,
    "architecture": null,
    "bitness": null,
    "model": null,
    "platformVersion": null
  },
  "requestContext": {
    "acceptLanguage": null,
    "fetchSite": null,
    "fetchMode": null,
    "fetchDest": null,
    "forwardedHost": "lilrobots.com",
    "forwardedProto": "https"
  }
}