SiteAuditBot
Semrush •
Web Crawler
What is SiteAuditBot?
Semrush identifies SiteAuditBot as the token to control crawling for SEO and technical issues in Site Audit. This is a separate robots.txt identity from the main SemrushBot, which builds backlink data, and from Semrush's other product-specific agents. Semrush documents the token and a disallow example but does not publish a canonical full browser-style header on this page, so the value shown is the documented identifier rather than an invented full request header.
User Agent String
SiteAuditBot
How to Control SiteAuditBot
Block Completely
To prevent SiteAuditBot from accessing your entire website, add this to your robots.txt file:
# Block SiteAuditBot
User-agent: SiteAuditBot
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: SiteAuditBot
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: SiteAuditBot
Crawl-delay: 10
How to Verify SiteAuditBot
Verification Method:
Semrush documents this token but says not to rely on static IP blocks. A matching header alone is spoofable; confirm questionable traffic with Semrush support and request details.
Semrush documents this token but says not to rely on static IP blocks. A matching header alone is spoofable; confirm questionable traffic with Semrush support and request details.
Learn more in the official documentation.
Detection Patterns
Multiple ways to detect SiteAuditBot in your application:
Basic Pattern
/SiteAuditBot/i
Strict Pattern
/^SiteAuditBot$/
Flexible Pattern
/SiteAuditBot[\s\/]?[\d\.]*?/i
Vendor Match
/.*Semrush.*SiteAuditBot/i
Implementation Examples
// PHP Detection for SiteAuditBot
function detect_siteauditbot() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/SiteAuditBot/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('SiteAuditBot 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($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for SiteAuditBot
import re
from flask import request, make_response
def detect_siteauditbot():
user_agent = request.headers.get('User-Agent', '')
pattern = r'SiteAuditBot'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False
# Django Middleware
class siteauditbotMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for SiteAuditBot
const express = require('express');
const app = express();
// Middleware to detect SiteAuditBot
function detect_siteauditbot(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /SiteAuditBot/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('SiteAuditBot detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'SiteAuditBot';
}
next();
}
app.use(detect_siteauditbot);
# Apache .htaccess rules for SiteAuditBot
# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} SiteAuditBot [NC]
RewriteRule .* - [F,L]
# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} SiteAuditBot [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]
# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "SiteAuditBot" is_bot=1
# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /SiteAuditBot/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for SiteAuditBot
# Map user agent to variable
map $http_user_agent $is_siteauditbot {
default 0;
~*SiteAuditBot 1;
}
server {
# Block the bot completely
if ($is_siteauditbot) {
return 403;
}
# Or serve cached content
location / {
if ($is_siteauditbot) {
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_siteauditbot) {
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 | Optional | Evaluate based on bandwidth usage vs. benefits |
| Blog/News | Allow | Increases content reach and discoverability |
| 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: SiteAuditBot
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: SiteAuditBot
Crawl-delay: 10
Disallow: /wp-admin/
Disallow: /drafts/
Disallow: /preview/
Disallow: /*?replytocom=
Allow: /
SaaS/Application Configuration
User-agent: SiteAuditBot
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
SiteAuditBot
Robots.txt Name
SiteAuditBot
Category
seo
Respects robots.txt
Yes
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