AIWebIndex-Agent
Lyrenth •
Web Crawler
What is AIWebIndex-Agent?
Lyrenth says this header identifies a fetch made when a customer submits a particular URL through its API, rather than an autonomous crawl chosen by Lyrenth. Its publisher guide explicitly separates this identity from AIWebIndex. The guide says blocking the scheduled crawler does not by itself block these user-directed fetches and describes a separate domain-wide opt-out. Do not infer that a request from this agent is model-training traffic.
User Agent String
AIWebIndex-Agent/2.0 (+https://lyrenth.com/bot; user-initiated fetch)
How to Control AIWebIndex-Agent
Block Completely
To prevent AIWebIndex-Agent from accessing your entire website, add this to your robots.txt file:
# Block AIWebIndex-Agent
User-agent: AIWebIndex-Agent
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: AIWebIndex-Agent
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-Agent
Crawl-delay: 10
How to Verify AIWebIndex-Agent
Verification Method:
Verify the source with Lyrenth's published network, forward-confirmed reverse DNS, or signed request rather than trusting the claimed user-agent.
Verify the source with Lyrenth's published network, forward-confirmed reverse DNS, or signed request rather than trusting the claimed user-agent.
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-Agent in your application:
Basic Pattern
/AIWebIndex\-Agent/i
Strict Pattern
/^AIWebIndex\-Agent\/2\.0 \(\+https\:\/\/lyrenth\.com\/bot; user\-initiated fetch\)$/
Flexible Pattern
/AIWebIndex\-Agent[\s\/]?[\d\.]*?/i
Vendor Match
/.*Lyrenth.*AIWebIndex\-Agent/i
Implementation Examples
// PHP Detection for AIWebIndex-Agent
function detect_aiwebindex_agent() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/AIWebIndex\-Agent/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('AIWebIndex-Agent 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($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for AIWebIndex-Agent
import re
from flask import request, make_response
def detect_aiwebindex_agent():
user_agent = request.headers.get('User-Agent', '')
pattern = r'AIWebIndex\-Agent'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False
# Django Middleware
class aiwebindex_agentMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for AIWebIndex-Agent
const express = require('express');
const app = express();
// Middleware to detect AIWebIndex-Agent
function detect_aiwebindex_agent(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /AIWebIndex\-Agent/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('AIWebIndex-Agent detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'AIWebIndex-Agent';
}
next();
}
app.use(detect_aiwebindex_agent);
# Apache .htaccess rules for AIWebIndex-Agent
# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} AIWebIndex\-Agent [NC]
RewriteRule .* - [F,L]
# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} AIWebIndex\-Agent [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]
# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "AIWebIndex\-Agent" is_bot=1
# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /AIWebIndex\-Agent/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for AIWebIndex-Agent
# Map user agent to variable
map $http_user_agent $is_aiwebindex_agent {
default 0;
~*AIWebIndex\-Agent 1;
}
server {
# Block the bot completely
if ($is_aiwebindex_agent) {
return 403;
}
# Or serve cached content
location / {
if ($is_aiwebindex_agent) {
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_agent) {
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 | Limit Access | Protect pricing and inventory data from AI training |
| 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 | Selective | Allow for public docs, block for internal docs |
| Corporate Site | Limit | Allow for public pages, block sensitive areas like intranets |
Advanced robots.txt Configurations
E-commerce Site Configuration
User-agent: AIWebIndex-Agent
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-Agent
# Blocking AI training bot
Disallow: /
SaaS/Application Configuration
User-agent: AIWebIndex-Agent
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
AIWebIndex-Agent
Robots.txt Name
AIWebIndex-Agent
Category
ai
Respects robots.txt
May not respect
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