What is Cyclr?

Cyclr is a bot in the webhook senders category, operated by Cyclr Limited.

Bot name
Cyclr
Operator
Cyclr Limited
Type
Bot
Respects robots.txt
Not confirmed
robots.txt user agent
Cyclr
Signs requests (Web Bot Auth)
No

About Cyclr

Cyclr provides hundreds of connectors for specific applications, as well as utility connectors and tools.

Webhook senders call your endpoints to deliver events from payment, messaging and SaaS platforms. Blocking them breaks integrations. Allow them on the webhook paths they need and nowhere else.

Cyclr user agent

Cyclr identifies itself with this user agent string:

  • Cyclr (https://cyclr.com)

Anyone can copy a user agent string. Transfon Security also checks where each request comes from, so a request that claims to be a known crawler but comes from the wrong network is treated as a fake, not as the real crawler.

How to block Cyclr in robots.txt

We have not confirmed whether Cyclr follows robots.txt. Add a rule, then check your logs to see that it stopped. robots.txt is a plain text file at the root of your domain, such as https://example.com/robots.txt.

Block Cyclr from the whole site

User-agent: Cyclr
Disallow: /

Block Cyclr from some folders

User-agent: Cyclr
Disallow: /private/
Disallow: /search

Allow Cyclr only on some folders

User-agent: Cyclr
Allow: /blog/
Disallow: /

Allow Cyclr and block other crawlers

User-agent: Cyclr
Allow: /

User-agent: *
Disallow: /

Things to know

  • Each host needs its own file. Rules on www.example.com do not apply to shop.example.com.
  • A crawler obeys only the most specific group that names it. Once you add a User-agent: Cyclr group, Cyclr ignores your User-agent: * rules, so repeat any that should still apply.
  • The user agent name is not case sensitive. We take Cyclr from Cyclr's user agent; check Cyclr Limited's own documentation if it publishes a different robots.txt name.
  • Crawlers cache robots.txt, so changes can take up to a day to apply. Disallow stops crawling but does not remove pages already collected or indexed.

Limits of robots.txt

  1. Cyclr may not follow the rule. robots.txt is a request that nothing enforces, and we have not confirmed that Cyclr follows it. Check your logs after adding a rule.
  2. The user agent could be fake. robots.txt matches the name a request claims. Anyone can send Cyclr's user agent, and a scraper using it is not bound by Cyclr Limited's robots.txt policy. Only checking the source network tells a real Cyclr from a fake one.

Treat robots.txt as a statement of your policy, and enforce it where requests arrive.

Who should care about Cyclr

Publishers

Allow Cyclr if it is a service you use, and keep its visits out of page views and ad requests either way.

Transfon Security for publishers

Media buyers and advertisers

Cyclr is not a person. Exclude it from campaign and conversion data so reports reflect real visitors.

Transfon Security for advertisers

E-commerce

Allow Cyclr only if it works for your store, and keep it away from cart and checkout.

Transfon Security for e-commerce

SaaS and APIs

If Cyclr is a service you use, allow it on the endpoints it needs and block it elsewhere.

Transfon Security for SaaS and APIs

Block Cyclr with Transfon Security

robots.txt is a request, not an enforcement. Transfon Security shows Cyclr by name in the Top Bots report, so you can see how often it visits and which pages it reads. Block or allow it with a User Agent rule, or slow it down with a rate limit decision rule.

Transfon Security

Control Cyclr on your site

  • See every Cyclr visit and the pages it reads
  • Spot bots that fake trusted crawler names
  • Block, allow or rate limit Cyclr with one rule
  • Works with or without robots.txt support

Frequently asked questions

What is Cyclr?

Cyclr is a bot in the webhook senders category, operated by Cyclr Limited. Cyclr provides hundreds of connectors for specific applications, as well as utility connectors and tools.

Does Cyclr respect robots.txt?

We have not confirmed whether Cyclr follows robots.txt. Add a robots.txt rule, then check your logs to see that it stopped, and block it by user agent if it did not.

How do I block Cyclr?

Add "User-agent: Cyclr" followed by "Disallow: /" to the robots.txt file at the root of your site. To enforce it, block requests whose user agent contains "cyclr.com" at your WAF. In Transfon Security that is one User Agent block rule.

Is robots.txt enough to block Cyclr?

No. robots.txt is voluntary, so Cyclr may not follow it, and anyone can send Cyclr's user agent, so a fake Cyclr ignores your rule. Enforce the rule where requests arrive, at your WAF, and check the source network.

Should I block Cyclr?

Webhook senders call your endpoints to deliver events from payment, messaging and SaaS platforms. Blocking them breaks integrations. Allow them on the webhook paths they need and nowhere else.

Related bots

All webhook senders · Full bot directory

See Which Bots Visit Your Site

Transfon Security identifies every bot in this directory in your traffic reports, flags fake search crawlers, and lets you allow, block or rate limit each bot.

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