Trellis-Services is a bot in the SEO crawlers category, operated by Mediavine.
Critical CSS Generator to Optimize Websites
SEO crawlers map links, keywords and technical issues for SEO tools and backlink databases. They help the tool's customers, often your competitors, rather than you. Rate limit or block the ones you do not use.
Trellis-Services identifies itself with this user agent string:
Trellis-ServicesAnyone 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.
We have not confirmed whether Trellis-Services 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.
User-agent: Trellis-Services Disallow: /
User-agent: Trellis-Services Disallow: /private/ Disallow: /search
User-agent: Trellis-Services Allow: /blog/ Disallow: /
User-agent: Trellis-Services Allow: / User-agent: * Disallow: /
User-agent: Trellis-Services group, Trellis-Services ignores your User-agent: * rules, so repeat any that should still apply.Trellis-Services from Trellis-Services's user agent; check Mediavine's own documentation if it publishes a different robots.txt name.Treat robots.txt as a statement of your policy, and enforce it where requests arrive.
Trellis-Services works for an SEO tool's customers, often your competitors. It adds server load without readers, so rate limit or block it unless you use the tool.
Transfon Security for publishersSEO crawlers map landing pages and links for competitor research. Keep Trellis-Services's visits out of campaign data.
Transfon Security for advertisersTrellis-Services can map your catalogue, prices and site structure for competitors. Block it unless you use the tool yourself.
Transfon Security for e-commerceAllow Trellis-Services only if your team uses the tool; otherwise rate limit it on docs and marketing pages.
Transfon Security for SaaS and APIsrobots.txt is a request, not an enforcement. Transfon Security shows Trellis-Services 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
Trellis-Services is a bot in the SEO crawlers category, operated by Mediavine. Critical CSS Generator to Optimize Websites
We have not confirmed whether Trellis-Services 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.
Add "User-agent: Trellis-Services" followed by "Disallow: /" to the robots.txt file at the root of your site. To enforce it, block requests whose user agent contains "Trellis-Services" at your WAF. In Transfon Security that is one User Agent block rule.
No. robots.txt is voluntary, so Trellis-Services may not follow it, and anyone can send Trellis-Services's user agent, so a fake Trellis-Services ignores your rule. Enforce the rule where requests arrive, at your WAF, and check the source network.
SEO crawlers map links, keywords and technical issues for SEO tools and backlink databases. They help the tool's customers, often your competitors, rather than you. Rate limit or block the ones you do not use.
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.
Privacy, security, monetization, and performance insights. A few emails a month, no spam.