What Is Trellis-Services?
Trellis-Services is a website optimization bot that generates critical CSS and performs performance analysis for WordPress sites using the Trellis framework and associated services. You can see how often Trellis-Services visits your website by setting up Dark Visitors Agent Analytics.
Agent Type
Expected Behavior
Developer helpers are tools that monitor, test, or analyze websites on behalf of developers and site operators. They perform tasks like uptime monitoring, performance testing, and accessibility checks. Traffic patterns vary widely. Some tools make regular scheduled checks (such as uptime monitors pinging every few minutes), while others perform one-time scans triggered by a human. These helpers typically access specific pages or endpoints rather than crawling entire sites, though comprehensive audit tools may scan multiple pages.
Detail
| Operated By | Mediavine |
| Last Updated | 21 hours ago |
Top Website Robots.txts
Country of Origin
Top Website Blocking Trend Over Time
The percentage of the world's top 1000 websites who are blocking Trellis-Services
Overall Developer Helper Traffic
The percentage of all internet traffic coming from developer helpers
Robots.txt
In this example, all pages are blocked. You can customize which pages are off-limits by swapping out / for a different disallowed path.
User-agent: Trellis-Services # https://darkvisitors.com/agents/trellis-services
Disallow: /Frequently Asked Questions About Trellis-Services
Should I Block Trellis-Services?
Generally no. Developer helpers provide valuable services like uptime monitoring, performance testing, and accessibility auditing. They also help maintain website quality and user experience. Only block them if they're causing server issues or you don't need the monitoring services.
How Do I Block Trellis-Services?
If you want to, you can block or limit Trellis-Services's access by configuring user agent token rules in your robots.txt file. The best way to do this is using Automatic Robots.txt, which blocks all agents of this type and updates continuously as new agents are released. While the vast majority of agents operated by reputable companies honor these robots.txt directives, bad actors may choose to ignore them entirely. In that case, you'll need to implement alternative blocking methods such as firewall rules or server-level restrictions. You can verify whether Trellis-Services is respecting your rules by setting up Agent Analytics to monitor its visits to your website.
Will Blocking Trellis-Services Hurt My SEO?
Blocking developer helpers won't directly impact SEO rankings, but these tools often monitor site performance, uptime, and accessibility, which are factors that indirectly affect search performance. Losing access to monitoring data could make it harder to identify and fix SEO-impacting technical issues.
Does Trellis-Services Access Private Content?
Developer helpers typically operate within the scope they're configured for by their users. Most focus on publicly accessible pages for monitoring and testing, but some may be granted access to staging environments, administrative panels, or other private areas if authorized by the site owner. The scope is usually limited to what the developer or organization has explicitly configured.
How Can I Tell if Trellis-Services Is Visiting My Website?
Setting up Agent Analytics will give you realtime visibility into Trellis-Services visiting your website, along with hundreds of other AI agents, crawlers, and scrapers. This will also let you measure human traffic to your website coming from AI search and chat LLM platforms like ChatGPT, Perplexity, and Gemini.
Why Is Trellis-Services Visiting My Website?
Trellis-Services is accessing your site because someone configured it to monitor, test, or analyze your website. This could be your own team using monitoring tools, or a third-party service that was given your URL for performance testing, uptime monitoring, or other development purposes.
How Can I Authenticate Visits From Trellis-Services?
Agent Analytics authenticates agent visits from many agents, letting you know whether each one was actually from that agent, or spoofed by a bad actor. This helps you identify suspicious traffic patterns and make informed decisions about blocking or allowing specific user agents.