What is SemrushBot-SI?
SemrushBot-SI is Semrush's specialized Site Intelligence crawler for On Page SEO Checker tool, analyzing website content and technical SEO factors to provide comprehensive site optimization insights and recommendations. Agent Analytics can track when it visits your website.
Category
Expected Behavior
SemrushBot-SI maps sites the way its customers' SEO tools need, following internal links to build a full picture of structure, content, and ranking signals. Expect thorough crawls rather than spot checks, with frequency rising when your site or your competitors are actively monitored in its tools.
Overview
| Operated By | Semrush |
| Expected To Follow Robots.txt | Yes |
| Insights Last Updated | July 7, 2026 |
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
As of July 7, 2026, 1% of top websites block SemrushBot-SI in their robots.txt files.
Overall SEO Crawler Traffic
As of July 7, 2026, 2.6% of all web traffic came from SEO crawlers.
Top Visited Website Categories
This data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the world's top 1000 websites and their robots.txt files.
SemrushBot-SI's User Agent
| User Agent | Mozilla/5.0 (compatible; SemrushBot-SI/0.97; +http://www.semrush.com/bot.html) |
Access other known user agents and IP addresses using the Enterprise API.
How To Block SemrushBot-SI
Add this rule to your robots.txt file to block SemrushBot-SI from accessing your entire website. You can customize which pages are blocked by swapping out / for a different path.
User-agent: SemrushBot-SI # https://knownagents.com/agents/semrushbot-si
Disallow: /Frequently Asked Questions
Should I Block SemrushBot-SI?
Only if you want your own pages and outbound links out of those tools. SemrushBot-SI collects the ranking and backlink data behind SEO tools, likely including ones you or your agency use, and it does not change how search engines rank you. Blocking it will not hide your backlink profile either, because backlinks are discovered on the sites that link to you. For comparison, 1% of the top websites we track already have robots.txt rules for SemrushBot-SI.
Does SemrushBot-SI Respect Robots.txt?
Yes. SemrushBot-SI is expected to honor robots.txt rules, so a disallow rule is the right first move. Automatic Robots.txt adds and maintains that rule for you, and Agent Analytics confirms SemrushBot-SI actually honors it.
Does SemrushBot-SI Access Private Content?
Login walls stop it. SemrushBot-SI analyzes public pages for rankings, links, and site structure.
Why Is SemrushBot-SI Visiting My Website?
Your domain shows up in the ranking, backlink, and competitor data SemrushBot-SI's operator sells. If anyone tracks your site or your competitors in an SEO tool, SemrushBot-SI visits you.
How Can I Tell if SemrushBot-SI Is Visiting My Website?
Agent Analytics tracks SemrushBot-SI visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user agent string contains "SemrushBot-SI". Look for full site crawls that follow your internal links. Keep in mind that SemrushBot-SI doesn't publish a verification method, so any client can claim its user agent string and a log match is a hint rather than proof.