Gemini-Deep-Research
Google •
Since 2024
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What is Gemini-Deep-Research?
Gemini-Deep-Research is the user agent used by Google Gemini's Deep Research feature, which performs extended multi-step web research on behalf of users. When a user initiates a deep research query, this bot systematically fetches and analyzes content from multiple web sources to compile comprehensive research reports. It respects robots.txt directives and operates transparently. Unlike standard search crawlers, it performs targeted, user-initiated research sessions rather than continuous indexing.
User Agent String
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Gemini-Deep-Research; +https://gemini.google/overview/deep-research/) Chrome/135.0.0.0 Safari/537.36
How to Control Gemini-Deep-Research
Block Completely
To prevent Gemini-Deep-Research from accessing your entire website, add this to your robots.txt file:
# Block Gemini-Deep-Research
User-agent: Gemini-Deep-Research
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: Gemini-Deep-Research
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: Gemini-Deep-Research
Crawl-delay: 10
How to Verify Gemini-Deep-Research
Verification Method:
Reverse DNS lookup should resolve to google.com
Reverse DNS lookup should resolve to google.com
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 Gemini-Deep-Research in your application:
Basic Pattern
/Gemini\-Deep\-Research/i
Strict Pattern
/^Mozilla/5\.0 AppleWebKit/537\.36 \(KHTML, like Gecko; compatible; Gemini\-Deep\-Research; \+https\://gemini\.google/overview/deep\-research/\) Chrome/135\.0\.0\.0 Safari/537\.36$/
Flexible Pattern
/Gemini\-Deep\-Research[\s\/]?[\d\.]*?/i
Vendor Match
/.*Google.*Gemini\-Deep\-Research/i
Implementation Examples
// PHP Detection for Gemini-Deep-Research
function detect_gemini_deep_research() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/Gemini\\-Deep\\-Research/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('Gemini-Deep-Research 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($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for Gemini-Deep-Research
import re
from flask import request, make_response
def detect_gemini_deep_research():
user_agent = request.headers.get('User-Agent', '')
pattern = r'Gemini-Deep-Research'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False
# Django Middleware
class GeminiDeepResearchMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for Gemini-Deep-Research
const express = require('express');
const app = express();
// Middleware to detect Gemini-Deep-Research
function detectGeminiDeepResearch(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /Gemini-Deep-Research/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('Gemini-Deep-Research detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'Gemini-Deep-Research';
}
next();
}
app.use(detectGeminiDeepResearch);
# Apache .htaccess rules for Gemini-Deep-Research
# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Gemini\-Deep\-Research [NC]
RewriteRule .* - [F,L]
# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} Gemini\-Deep\-Research [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]
# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "Gemini\-Deep\-Research" is_bot=1
# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /Gemini\-Deep\-Research/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for Gemini-Deep-Research
# Map user agent to variable
map $http_user_agent $is_gemini_deep_research {
default 0;
~*Gemini\-Deep\-Research 1;
}
server {
# Block the bot completely
if ($is_gemini_deep_research) {
return 403;
}
# Or serve cached content
location / {
if ($is_gemini_deep_research) {
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_gemini_deep_research) {
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: Gemini-Deep-Research
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: Gemini-Deep-Research
# Blocking AI training bot
Disallow: /
SaaS/Application Configuration
User-agent: Gemini-Deep-Research
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
Gemini-Deep-Research
Robots.txt Name
Gemini-Deep-Research
Category
ai
Respects robots.txt
Yes
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