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Manus-User

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Operated by Butterfly Effect browser automation

Manus — general-purpose AI agent by Butterfly Effect that autonomously browses the web to complete complex tasks.

What it does

AI agents are autonomous programs that browse websites to complete tasks on behalf of human users or systems. Unlike traditional bots that follow simple scripts, AI agents can make decisions, navigate through multi-page workflows, interact with forms, and adapt their behavior based on page content. They typically execute JavaScript, handle cookies and sessions, and may spend varying amounts of time on pages while processing information. Request patterns can be unpredictable since they depend on the agent's goals rather than following fixed crawl paths.

How to identify it

User-agent contains any of:

  • Manus-User
  • Mozilla

Example user-agent string:

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36; Manus-User/1.0

robots.txt

Well-behaved crawlers honor robots.txt. To control Manus-User:

Allow full access

User-agent: Manus-User
Allow: /

Block entirely

User-agent: Manus-User
Disallow: /

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

FAQ

Should I Block Manus-User?

Generally no. Manus-User acts on behalf of human users to complete tasks, so blocking it prevents those users from being productive with your content. This can create frustration and negative sentiment about your website. Allowing Manus-User enables users to interact with your website through their preferred tools and workflows.

How Do I Block Manus-User?

If you want to, you can block or limit Manus-User'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 Manus-User is respecting your rules by setting up Agent Analytics to monitor its visits to your website.

Will Blocking Manus-User Hurt My SEO?

Blocking AI agents is unlikely to directly impact traditional SEO rankings since search engines don't rely on these tools for indexing. However, as AI-powered search becomes more prevalent, preventing AI agents from accessing your content could limit user engagement through AI-assisted workflows.

Does Manus-User Access Private Content?

AI agents typically only access publicly available content that users can reach through normal browsing. However, if configured with authentication credentials or given access to private systems, they could potentially access private content within their granted permissions. The scope depends entirely on how they're deployed and what access they've been given.

How Can I Tell if Manus-User Is Visiting My Website?

Setting up Agent Analytics will give you realtime visibility into Manus-User 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 Manus-User Visiting My Website?

Manus-User likely discovered your site through links from other websites, search results, or by following specific instructions to complete a task that led it to your content. Manus-User may also visit your site if it contains information relevant to a user's request or if your site is part of a workflow it's executing.

How Can I Authenticate Visits From Manus-User?

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 Manus-User 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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