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Anchor Browser

recommended: observe
Operated by Anchor ai crawler Web Bot Auth signed

The Web Browser for AI Agents

What it does

The behavior of automated agents generally depends who is using them and what exactly they're using them for. Patterns could vary significantly depending whether the operator is human-guided software (e.g. performance testing), or an autonomous AI agent acting like a human.

How to identify it

User-agent contains any of:

  • Anchor Browser
  • Anchor

Example user-agent string:

Mozilla/5.0 (compatible; Anchor Browser; +https://anchorbrowser.io/)

How to verify it's genuine

Anchor Browser signs its requests with Web Bot Auth. Botscope verifies the HTTP Message Signature against the operator's published key directory — a forged signature is flagged instantly. View the key directory ↗

robots.txt

Well-behaved crawlers honor robots.txt. To control Anchor Browser:

Allow full access

User-agent: Anchor
Allow: /

Block entirely

User-agent: Anchor
Disallow: /

Grey-area scrapers ignore robots.txt. Botscope enforces your policy at the edge or origin regardless — see how →

FAQ

Should I Block Anchor Browser?

Evaluate case-by-case. Automated agents have diverse uses from legitimate testing to automated attacks. Monitor their behavior and block them if they consume excessive resources, attempt unauthorized actions, or show malicious patterns.

How Do I Block Anchor Browser?

If you want to, you can block or limit Anchor Browser's access by configuring user agent token rules in your robots.txt file. The best way to do this is using Automatic Robots.txt, which update automatically as new agents are discovered. While the vast majority of agents operated by reputable companies honor these robots.txt directives, bad actors may choose to ignore them entirely. In that case, you'll need to implement alternative blocking methods such as firewall rules or server-level restrictions. You can verify whether Anchor Browser is respecting your rules by setting up Agent Analytics to monitor its visits to your website.

Will Blocking Anchor Browser Hurt My SEO?

The SEO impact of blocking automated agents depends on their specific use case. If they're used for legitimate testing or monitoring that helps maintain site quality, blocking could indirectly hurt SEO. However, malicious automated agents might harm your site, so blocking them could protect your search rankings.

Does Anchor Browser Access Private Content?

Automated agents can access whatever content their controlling software directs them to, which could include both public and private content depending on their configuration. If provided with authentication credentials or authorized access, they can interact with private systems just like a human user would. Their scope is entirely dependent on their programming and permissions.

How Can I Tell if Anchor Browser Is Visiting My Website?

Setting up Agent Analytics will give you realtime visibility into Anchor Browser visiting your website, along with hundreds of other AI agents, crawlers, and scrapers. This will also let you measure human traffic to your website coming from AI search and chat LLM platforms like ChatGPT, Perplexity, and Gemini.

Why Is Anchor Browser Visiting My Website?

Anchor Browser accessed your site for purposes that depend on how it's being used. It may have been directed to your site for testing, automation tasks, or by an AI system that identified your content as relevant to its objectives. The specific reason varies based on who is controlling it and what they're trying to accomplish.

How Can I Authenticate Visits From Anchor Browser?

Agent Analytics authenticates agent visits from many agents, letting you know whether each one was actually from that agent, or spoofed by a bad actor. This helps you identify suspicious traffic patterns and make informed decisions about blocking or allowing specific user agents.

References

See Anchor Browser on your own site

Botscope shows every bot and AI agent hitting your site — and lets you allow, challenge, or block each one. Observe first, enforce when you're ready.

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