Complete Crawler List For AI User-Agents [Dec 2025]

AI visibility performs a vital function for SEOs, and this begins with controlling AI crawlers. If AI crawlers can’t entry your pages, you’re invisible to AI discovery engines.

On the flip facet, unmonitored AI crawlers can overwhelm servers with extreme requests, inflicting crashes and sudden internet hosting payments.

Consumer-agent strings are important for controlling which AI crawlers can entry your web site, however official documentation is commonly outdated, incomplete, or lacking completely. So, we curated a verified checklist of AI crawlers from our precise server logs as a helpful reference.

Each user-agent is validated in opposition to official IP lists when out there, making certain accuracy. We’ll keep and replace this checklist to catch new crawlers and modifications to current ones.

The Full Verified AI Crawler Listing (December 2025)

The user-agent strings above have all been verified in opposition to Search Engine Journal server logs.

Fashionable AI Agent Crawlers With Unidentifiable Consumer Agent

We’ve discovered that the next didn’t determine themselves:

• you.com.
• ChatGPT’s agent Operator.
• Bing’s Copilot chat.
• Grok.
• DeepSeek.

There is no such thing as a option to monitor this crawler from accessing webpages aside from by figuring out the specific IP.

We arrange a lure web page (e.g., /specific-page-for-you-com/) and used the on-page chat to immediate you.com to go to it, permitting us to find the corresponding go to file and IP handle in our server logs. Under is the screenshot:

What About Agentic AI Browsers?

Sadly, AI browsers comparable to Comet or ChatGPT’s Atlas don’t differentiate themselves within the person agent string, and you may’t determine them in server logs and mix with regular customers’ visits.

That is disappointing for SEOs as a result of monitoring agentic browser visits to a web site is essential for reporting POV.

How To Verify What’s Crawling Your Server

Some internet hosting firms provide a person interface (UI) that makes it straightforward to entry and take a look at server logs, relying on what hosting service you’re utilizing.

In case your internet hosting doesn’t provide this, you will get server log information (often positioned  /var/log/apache2/entry.log in Linux-based servers) by way of FTP or request it out of your server help to ship it to you.

After you have the log file, you’ll be able to view and analyze it in both Google Sheets (if the file is in CSV format), Screaming Frog’s log analyzer, or, in case your log file is less than 100 MB, you’ll be able to strive analyzing it with Gemini AI.

How To Confirm Official Vs. Pretend Bots

Pretend crawlers can spoof authentic person brokers to bypass restrictions and scrape content material aggressively. For instance, anybody can impersonate ClaudeBot from their laptop computer and provoke crawl request from the terminal. In your server log, you will notice it as Claudebot is crawling it:

curl -A 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; appropriate; ClaudeBot/1.0; [email protected])' https://instance.com

Verification will help to save lots of server bandwidth and stop harvesting content material illegally. Essentially the most dependable verification technique you’ll be able to apply is checking the request IP.

Verify all IPs and scan to match if it’s one of many formally declared IPs listed above. In that case, you’ll be able to enable the request; in any other case, block.

Numerous forms of firewalls can help you with this by way of allowlist verified IPs (which permits authentic bot requests to go via), and all different requests impersonating AI crawlers of their person agent strings are blocked.

For instance, in WordPress, you should use Wordfence free plugin to allowlist authentic IPs from the official lists (as above) and add blocking customized guidelines as beneath:

The allowlist rule is superior, and it’ll let authentic crawlers go via and block any impersonation request which comes from completely different IPs.

Nevertheless, please word that it’s doable to spoof an IP address, and in that case, when bot person agent and IPs are spoofed, you received’t be capable to block it.

Conclusion: Keep In Management Of AI Crawlers For Dependable AI Visibility

AI crawlers are actually a part of our net ecosystem, and the bots listed right here symbolize the most important AI platforms presently indexing the online, though this checklist is prone to develop.

Verify your server logs frequently to see what’s truly hitting your website and ensure you inadvertently don’t block AI crawlers if visibility in AI search engines is essential for your enterprise. If you happen to don’t need AI crawlers to entry your content material, block them by way of robots.txt utilizing the user-agent title.

We’ll maintain this checklist up to date as new crawlers emerge and replace current ones, so we advocate you bookmark this URL, or revisit this text frequently to maintain your AI crawler checklist updated.

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