What is gocrawl?

gocrawl is a bot in the HTTP clients and libraries category.

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

About gocrawl

gocrawl is an open source web crawler library written in Go. Requests with this name come from crawlers built with it.

HTTP clients are programming libraries and command line tools. Developers use them for scripts, integrations and scrapers. Real browsers never send these user agents, so treat them as automated traffic and block them on pages meant for people.

gocrawl user agent

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 gocrawl in robots.txt

We have not confirmed whether gocrawl 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 gocrawl from the whole site

User-agent: gocrawl
Disallow: /

Block gocrawl from some folders

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

Allow gocrawl only on some folders

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

Allow gocrawl and block other crawlers

User-agent: gocrawl
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: gocrawl group, gocrawl ignores your User-agent: * rules, so repeat any that should still apply.
  • The user agent name is not case sensitive. We take gocrawl from gocrawl's user agent; check the operator'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. gocrawl may not follow the rule. robots.txt is a request that nothing enforces, and we have not confirmed that gocrawl 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 gocrawl's user agent, and a scraper using it is not bound by the operator's robots.txt policy. Only checking the source network tells a real gocrawl from a fake one.

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

Who should care about gocrawl

Publishers

gocrawl is a common tool for scrapers. Real readers never use it, so block it on article pages and keep it out of ad requests.

Transfon Security for publishers

Media buyers and advertisers

Traffic from gocrawl on landing pages is automated. It inflates clicks and visits, so filter it from campaign data and raise it with the ad network.

Transfon Security for advertisers

E-commerce

Price scrapers, stock checkers and card testing scripts often run on gocrawl. Block it on product, cart and checkout pages.

Transfon Security for e-commerce

SaaS and APIs

gocrawl is normal for API clients but not for your web app. Allow it only on API routes that need a key, and rate limit it there.

Transfon Security for SaaS and APIs

Block gocrawl with Transfon Security

robots.txt is a request, not an enforcement. Transfon Security shows gocrawl 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 gocrawl on your site

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

Frequently asked questions

What is gocrawl?

gocrawl is a bot in the HTTP clients and libraries category. gocrawl is an open source web crawler library written in Go. Requests with this name come from crawlers built with it.

Does gocrawl respect robots.txt?

We have not confirmed whether gocrawl 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 gocrawl?

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

Is robots.txt enough to block gocrawl?

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

Should I block gocrawl?

HTTP clients are programming libraries and command line tools. Developers use them for scripts, integrations and scrapers. Real browsers never send these user agents, so treat them as automated traffic and block them on pages meant for people.

Related bots

All HTTP clients and libraries · 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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