Manus-User
Few readable files block Manus-User in October 2026, at 56 sites or 0.9%. The community reference lists its operator as Butterfly Effect, a company based in China.
Who runs Manus-User?
| Fact | Manus-User reference entry |
|---|---|
| Operator | “Butterfly Effect, a company based in China” |
| Purpose | “AI Agents” |
| Does Manus-User obey robots.txt? | “Unclear at this time.” |
| Frequency | “Unclear at this time.” |
| Cloudflare managed list for Manus-User | No |
These facts quote the stored community ai.robots.txt reference.
“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…”
The reference places this crawler among AI agents. An owner may want a page included in search and available on request without offering its contents for future model development.
How many sites block it?
The name occurs in 60 out of 6,171 readable files, a 1.0% share. Across the full sample, the whole-site Disallow: / block count is 56, or 0.9%. Files without that ban number 6,115.
From the highest 1,000 ranks, 552 files could be read. Its naming count is 18, or 3.3%, and the block count is 19. Blocking is more common among the leading sites, at 3.4%. Compare 37 blocks among the 5,619 readable files below those ranks, or 0.7%.
| Readable files | Named by | Named share | Blocked by | Blocked share |
|---|---|---|---|---|
| Manus-User, all ranks | 60 | 1.0% | 56 | 0.9% |
| Manus-User, top 1,000 | 18 | 3.3% | 19 | 3.4% |
| Manus-User, remaining ranks | 42 | 0.7% | 37 | 0.7% |
For this entry, we counted whole-site bans attached to its own name, leaving general rules for all crawlers out of the total. Of 56 blocks, 3 do not also appear in our count of files naming it. The split among files that name it is 53 with a whole-site block and 7 without one. Its name is absent from 6,111 readable files. We ignore capitalization and repeated names.
How to block or allow it
Place the group in your root robots.txt file. Per the robots.txt standard, a named group for Manus-User overrides User-agent: *.
Block the whole site
User-agent: Manus-User
Disallow: /Allow access
User-agent: Manus-User
Allow: /It's the 105th most-named crawler of the 171 we counted in the crawler index.
How we counted
For Manus-User, on 19 October 2026, we requested robots.txt from Tranco’s top 10,000 sites. Requests could run for 8 seconds, with a 262,144-byte file limit. Only available files we could read enter the percentages. Later readings are included in results from scripts/robots_2026_08_06.py (robots.py at app commit 07104ff). See the full survey method.
Common questions
Does a User-agent line mean it is blocked?
The 60 files that mention its name do not all record a whole-site ban. Those without one total 7.
What do the top-ranked sites show?
Within readable robots.txt files near the top of the ranking, 3.3% name it and 3.4% block it. Overall, naming reaches 1.0% and blocking 0.9%.
Which nearby entry can I compare?
The nearby KlaviyoAIBot entry reports 59 files that name it and 69 whole-site blocks, 1.1% of readable files. Here, 60 files mention the name and 56 block access, or 0.9%.