Does Manus-User respect robots.txt?

Not documented. No operator statement says whether Manus-User reads robots.txt, so add the rule but verify in your logs that the requests actually stop.

How do I block Manus-User?

Add the Manus-User token to robots.txt with Disallow: /. If the crawler ignores robots.txt, match the user agent at your CDN or reverse proxy and return 403 there instead.

IPScanner

Autonomous agents

Manus-User

Q: How do I verify a request really came from Manus-User?

You cannot, at least not from the request itself. No IP range file and no reverse-DNS convention have been published for this agent. The user-agent string is the only signal, and any client can send it, so treat a match as a claim rather than proof. Compare the source IP against hosting and datacenter ranges instead, and rate limit anything that behaves like a crawler.

Manus-User is a bot operated by Butterfly Effect, a company based in China that browses the web on its own to finish multi-step tasks. Manus-User is a browser-enabled AI agent operated by Butterfly Effect, a company based in China. No IP range list or reverse-DNS convention is published, so a request carrying this user agent cannot be proven genuine and a robots.txt rule alone will not stop a forgery.

Manus-User at a glance

Reference data for the Manus-User crawler
User agent	`Manus-User` Token only. The operator has not published a full user-agent string, so match on the substring rather than an exact header.
Operator	Butterfly Effect, a company based in China
Purpose	Autonomous agents
Respects robots.txt	Not documented
Verification method	None published, user agent only No IP range file and no reverse-DNS convention have been published for this agent. The user-agent string is the only signal, and any client can send it, so treat a match as a claim rather than proof.
Crawl pattern	Not published
Robots.txt tokens	`Manus-User`
Operator documentation	None published

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…

robots.txt

Allow or block Manus-User

Paste one of these into the robots.txt file at the root of your domain. Rules are per token, so a block on one crawler leaves every other bot untouched.

Block Manus-User

User-agent: Manus-User
Disallow: /

Blocks every path for this crawler only.

Allow Manus-User

User-agent: Manus-User
Allow: /

Explicit allow. Useful when a wildcard rule above it would otherwise catch this crawler.

Allow, except the pages you never want quoted

User-agent: Manus-User
Allow: /
Disallow: /account/
Disallow: /checkout/
Disallow: /search

Edit the Disallow paths to match your own account, checkout and search URLs.

What blocking actually costs you

Blocking Manus-User stops automated sessions that fill forms, click through flows and read pages the way a logged-in user would. Rate limits and challenges usually work better here than a robots.txt line.

Block every crawler in the directory at once

Verification

Is that really Manus-User?

A user-agent header is a string the client chooses. Scrapers copy Manus-User precisely because site owners allow it. No IP range file and no reverse-DNS convention have been published for this agent. The user-agent string is the only signal, and any client can send it, so treat a match as a claim rather than proof.

Paste the IP address from your access log below. You will see whether it belongs to a hosting provider, a residential proxy pool or a Tor exit, plus the ASN that announces it, which is what tells you whether the claim holds up.

Datacenter IP detectionNearly every real AI crawler egresses from cloud ranges. A residential IP claiming to be one is the first thing to check.IP reputation checkSee whether the address behind a fake crawler hit has a history of abuse elsewhere.Residential proxy detectionScrapers that get blocked by user agent often come back through residential proxy pools.

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Agentscan

Identify crawlers automatically instead of by hand

Agentscan checks a request against published crawler ranges, reverse DNS and hosting data, then returns a verdict your edge can act on. One call per request, no range files to keep up to date.

How Agentscan works API reference Pricing What is my IP

FAQ