Manus-User

Operator

Butterfly Effect Pte. Ltd.

Type

AI Assistant

Official page

manus.im

robots.txt token

Manus-User

In Vireo

Excluded, reported under AI crawlers

What it does

Manus-User is a browser-enabled AI agent operated by Butterfly Effect, a company based in China. It autonomously navigates websites, interprets content, and carries out m...

ai.robots.txt describes its function as: AI Agents

Source: ai.robots.txt.

User agent

Requests from Manus-User carry a user agent like this:

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

Device Detector identifies it with this pattern (a case-insensitive regular expression):

Manus-User

Anyone can put any name in a user agent. Where the operator publishes IP ranges, checking the request's address against them is the way to confirm a visit is genuine.

How to block or allow Manus-User

Add a group for its token to the robots.txt file at the root of your site. To keep it out of the whole site:

User-agent: Manus-User
Disallow: /

To let it crawl everything, use an empty Disallow: or Allow: / instead. WordPress serves a virtual robots.txt that many SEO plugins let you edit. A real robots.txt file uploaded to the site root takes its place.

robots.txt is a request, so it only works on crawlers that honour it. A bot that ignores it has to be blocked at the server or firewall, by user agent or IP address.

How Vireo counts Manus-User

Vireo keeps requests from Manus-User out of your pageviews and visitors and counts them on its bot report under AI crawlers, so you can see how much it left out rather than wonder why your server logs show more traffic.

Because it's an AI crawler, its requests also count toward the pages AI crawlers took, which Vireo shows next to the readers AI assistants sent back. See how the AI assistants card works.

Checked by running Vireo Analytics' own bot filter over Manus-User's user agents.

Sources

• Manus-User information page (manus.im)
• Matomo Device Detector, bots.yml (LGPL-3.0)
• ai.robots.txt (MIT)