PanguBot is Huawei's web crawler designed to collect training data for their PanGu series of multimodal large language models. PanGu models are developed by Huawei Cloud for enterprise and research applications. The bot crawls publicly available web content to expand the knowledge and capabilities of PanGu models. Website owners should monitor their logs for this user agent, as its robots.txt compliance is not well documented.
User Agent String
PanguBot
How to Control PanguBot
Block Completely
To prevent PanguBot from accessing your entire website, add this to your robots.txt file:
# Block PanguBot
User-agent: PanguBot
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
⚠️ 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.
Detection Patterns
Multiple ways to detect PanguBot in your application:
Basic Pattern
/PanguBot/i
Strict Pattern
/^PanguBot$/
Flexible Pattern
/PanguBot[\s\/]?[\d\.]*?/i
Vendor Match
/.*Huawei.*PanguBot/i
Implementation Examples
// PHP Detection for PanguBot
function detect_pangubot() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/PanguBot/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('PanguBot 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($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for PanguBot
import re
from flask import request, make_responsedef detect_pangubot():
user_agent = request.headers.get('User-Agent', '')
pattern = r'PanguBot'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False# Django Middleware
class PanguBotMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for PanguBot
const express = require('express');
const app = express();// Middleware to detect PanguBot
function detectPanguBot(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /PanguBot/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('PanguBot detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'PanguBot';
}
next();
}app.use(detectPanguBot);
# Apache .htaccess rules for PanguBot# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} PanguBot [NC]
RewriteRule .* - [F,L]# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} PanguBot [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "PanguBot" is_bot=1# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /PanguBot/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for PanguBot# Map user agent to variable
map $http_user_agent $is_pangubot {
default 0;
~*PanguBot 1;
}server {
# Block the bot completely
if ($is_pangubot) {
return 403;
}
# Or serve cached content
location / {
if ($is_pangubot) {
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_pangubot) {
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