AIWebIndex
Lyrenth •
Web Crawler
What is AIWebIndex?
Lyrenth distinguishes scheduled AIWebIndex crawling from its separate user-initiated AIWebIndex-Agent fetches. It says this crawler builds a shared index of public pages for agents and does not train foundation models. The operator publishes this full user-agent, IP ranges, forward-confirmed reverse DNS and signed-request verification. It says the scheduled crawler follows robots.txt, Crawl-delay and backoff signals. Those are operator claims, not evidence that this agent has visited this site.
User Agent String
AIWebIndex/2.0 (+https://lyrenth.com/bot; AI-readable web index)
How to Control AIWebIndex
Block Completely
To prevent AIWebIndex from accessing your entire website, add this to your robots.txt file:
# Block AIWebIndex
User-agent: AIWebIndex
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: AIWebIndex
Disallow: /admin/
Disallow: /private/
Disallow: /wp-admin/
Allow: /public/
Set Crawl Delay
To slow down the crawl rate (note: not all bots respect this directive):
User-agent: AIWebIndex
Crawl-delay: 10
How to Verify AIWebIndex
Verification Method:
Check Lyrenth's published IP ranges, forward-confirmed reverse DNS under lyrenth.com, or its Web Bot Auth signature; the header alone is spoofable.
Check Lyrenth's published IP ranges, forward-confirmed reverse DNS under lyrenth.com, or its Web Bot Auth signature; the header alone is spoofable.
Learn more in the official documentation.
⚠️ AI Training Notice
This bot may collect and use your website content for AI model training. Consider whether you want your content used for this purpose before allowing access.
This bot may collect and use your website content for AI model training. Consider whether you want your content used for this purpose before allowing access.
Detection Patterns
Multiple ways to detect AIWebIndex in your application:
Basic Pattern
/AIWebIndex/i
Strict Pattern
/^AIWebIndex\/2\.0 \(\+https\:\/\/lyrenth\.com\/bot; AI\-readable web index\)$/
Flexible Pattern
/AIWebIndex[\s\/]?[\d\.]*?/i
Vendor Match
/.*Lyrenth.*AIWebIndex/i
Implementation Examples
// PHP Detection for AIWebIndex
function detect_aiwebindex() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/AIWebIndex/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('AIWebIndex detected from IP: ' . $_SERVER['REMOTE_ADDR']);
// Set cache headers
header('Cache-Control: public, max-age=3600');
header('X-Robots-Tag: noarchive');
// Optional: Serve cached version
if (file_exists('cache/' . md5($_SERVER['REQUEST_URI']) . '.html')) {
readfile('cache/' . md5($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for AIWebIndex
import re
from flask import request, make_response
def detect_aiwebindex():
user_agent = request.headers.get('User-Agent', '')
pattern = r'AIWebIndex'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False
# Django Middleware
class aiwebindexMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for AIWebIndex
const express = require('express');
const app = express();
// Middleware to detect AIWebIndex
function detect_aiwebindex(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /AIWebIndex/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('AIWebIndex detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'AIWebIndex';
}
next();
}
app.use(detect_aiwebindex);
# Apache .htaccess rules for AIWebIndex
# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} AIWebIndex [NC]
RewriteRule .* - [F,L]
# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} AIWebIndex [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]
# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "AIWebIndex" is_bot=1
# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /AIWebIndex/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for AIWebIndex
# Map user agent to variable
map $http_user_agent $is_aiwebindex {
default 0;
~*AIWebIndex 1;
}
server {
# Block the bot completely
if ($is_aiwebindex) {
return 403;
}
# Or serve cached content
location / {
if ($is_aiwebindex) {
root /var/www/cached;
try_files $uri $uri.html $uri/index.html @backend;
}
try_files $uri @backend;
}
# Add headers for bot requests
location @backend {
if ($is_aiwebindex) {
add_header Cache-Control "public, max-age=3600";
add_header X-Robots-Tag "noarchive";
}
proxy_pass http://backend;
}
}
Should You Block This Bot?
Recommendations based on your website type:
| Site Type | Recommendation | Reasoning |
|---|---|---|
| E-commerce | Allow | Essential for product visibility in search results |
| Blog/News | Consider Blocking | Your content may be used for AI training without compensation |
| SaaS Application | Block | No benefit for application interfaces; preserve resources |
| Documentation | Allow | Improves documentation discoverability for developers |
| Corporate Site | Allow | Allow for public pages, block sensitive areas like intranets |
Advanced robots.txt Configurations
E-commerce Site Configuration
User-agent: AIWebIndex
Crawl-delay: 5
Disallow: /cart/
Disallow: /checkout/
Disallow: /my-account/
Disallow: /api/
Disallow: /*?sort=
Disallow: /*?filter=
Disallow: /*&page=
Allow: /products/
Allow: /categories/
Sitemap: https://example.com/sitemap.xml
Publishing/Blog Configuration
User-agent: AIWebIndex
# Blocking AI training bot
Disallow: /
SaaS/Application Configuration
User-agent: AIWebIndex
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
AIWebIndex
Robots.txt Name
AIWebIndex
Category
ai, search
Respects robots.txt
Yes
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