YandexMetrika
Yandex •
Web Crawler
What is YandexMetrika?
Yandex's bot list contains several YandexMetrika header versions with different stated jobs, including landing-page availability checks and CSS downloads for Webvisor rendering. This entry uses the plain documented 2.0 header only; the operator labels it a Yandex Metrica robot but does not attach a more specific task to that row. The table says general robots.txt rules do not apply. Do not infer that every Metrica request has this exact header or purpose.
User Agent String
Mozilla/5.0 (compatible; YandexMetrika/2.0; +http://yandex.com/bots)
How to Control YandexMetrika
Block Completely
To prevent YandexMetrika from accessing your entire website, add this to your robots.txt file:
# Block YandexMetrika
User-agent: YandexMetrika
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: YandexMetrika
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: YandexMetrika
Crawl-delay: 10
How to Verify YandexMetrika
Verification Method:
Validate Yandex-domain reverse DNS and forward resolution; the string alone is spoofable.
Validate Yandex-domain reverse DNS and forward resolution; the string alone is spoofable.
Learn more in the official documentation.
Detection Patterns
Multiple ways to detect YandexMetrika in your application:
Basic Pattern
/YandexMetrika/i
Strict Pattern
/^Mozilla\/5\.0 \(compatible; YandexMetrika\/2\.0; \+http\:\/\/yandex\.com\/bots\)$/
Flexible Pattern
/YandexMetrika[\s\/]?[\d\.]*?/i
Vendor Match
/.*Yandex.*YandexMetrika/i
Implementation Examples
// PHP Detection for YandexMetrika
function detect_yandexmetrika() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/YandexMetrika/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('YandexMetrika 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($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for YandexMetrika
import re
from flask import request, make_response
def detect_yandexmetrika():
user_agent = request.headers.get('User-Agent', '')
pattern = r'YandexMetrika'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False
# Django Middleware
class yandexmetrikaMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for YandexMetrika
const express = require('express');
const app = express();
// Middleware to detect YandexMetrika
function detect_yandexmetrika(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /YandexMetrika/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('YandexMetrika detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'YandexMetrika';
}
next();
}
app.use(detect_yandexmetrika);
# Apache .htaccess rules for YandexMetrika
# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} YandexMetrika [NC]
RewriteRule .* - [F,L]
# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} YandexMetrika [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]
# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "YandexMetrika" is_bot=1
# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /YandexMetrika/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for YandexMetrika
# Map user agent to variable
map $http_user_agent $is_yandexmetrika {
default 0;
~*YandexMetrika 1;
}
server {
# Block the bot completely
if ($is_yandexmetrika) {
return 403;
}
# Or serve cached content
location / {
if ($is_yandexmetrika) {
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_yandexmetrika) {
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: YandexMetrika
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: YandexMetrika
Crawl-delay: 10
Disallow: /wp-admin/
Disallow: /drafts/
Disallow: /preview/
Disallow: /*?replytocom=
Allow: /
SaaS/Application Configuration
User-agent: YandexMetrika
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
YandexMetrika
Robots.txt Name
YandexMetrika
Category
other
Respects robots.txt
May not respect
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