Safe Official docs SEO Tools

Semrush Writing Assistant

Operated by Semrush

Quick Facts

User-Agent:
SemrushBot-SWA
Category:
SEO Tools
Operator:
Semrush
Safety:
Safe
Blocking Impact:
Low - No SEO ranking impact
SEO Impact Score:
2/10
Official docs:
www.semrush.com

Confirmed by the operator

Semrush names SemrushBot-SWA on its own documentation page, linked above. The token, purpose and robots.txt behaviour on this profile come from that page, re-checked on September 22, 2026.

What is Semrush Writing Assistant?

Semrush Writing Assistant is a monitoring and validation agent operated by Semrush. It checks pages, ad destinations, or policy compliance rather than collecting training data. It has no effect on search rankings.

Semrush Writing Assistant is a monitoring and validation agent operated by Semrush. It checks pages, ad destinations, or policy compliance rather than collecting training data. It has no effect on search rankings.
Semrush Writing Assistant uses the user-agent token SemrushBot-SWA. You can control it via robots.txt, meta tags (noai), or the emerging llms.txt standard. Robots.txt is voluntary; for hard enforcement, combine it with server-level IP blocking.

What happens if you block Semrush Writing Assistant?

🔶 AI Visibility Trade-off - Blocking Semrush Writing Assistant will not hurt Google or Bing rankings, but it can remove your content from AI search answers and assistant citations powered by this crawler. Block only if you have a deliberate reason.
Generally safe to allow; provides legitimate crawling value.

How to block Semrush Writing Assistant with robots.txt

<code>User-agent: SemrushBot-SWA</code> - Matching is case-insensitive. Robots.txt is fetched from the root of each subdomain separately.

Block completely (robots.txt)
User-agent: SemrushBot-SWA Disallow: /
Allow all (robots.txt)
User-agent: SemrushBot-SWA Allow: /
Block private only (robots.txt)
User-agent: SemrushBot-SWA Disallow: /private/ Disallow: /api/ Disallow: /admin/ Allow: /
Nginx server block
# Nginx: Hard-block Semrush Writing Assistant if ($http_user_agent ~* "SemrushBot-SWA") { return 403 "Bot blocked"; }
Apache .htaccess
# Apache: Hard-block Semrush Writing Assistant SetEnvIfNoCase User-Agent "SemrushBot-SWA" bad_bot Order Allow,Deny Allow from all Deny from env=bad_bot
Meta robots tag
<meta name="robots" content="noindex, nofollow">
X-Robots-Tag header
X-Robots-Tag: noindex, nofollow

Is Semrush Writing Assistant safe to allow?

Yes, Semrush Writing Assistant is a safe and legitimate crawler operated by Semrush. It follows the Robots Exclusion Protocol (RFC 9309) and can be controlled with standard robots.txt rules.
Verify by reverse-DNS lookup: legitimate Semrush Writing Assistant requests resolve to Semrush's domain.

What does Semrush Writing Assistant do?

Understanding Semrush Writing Assistant's purpose helps you decide whether to allow or block it.

  • Validates pages, ads, or policy compliance
  • Performs automated quality and safety checks
  • Does not collect training data
  • No impact on search rankings
  • Generally safe to allow

Frequently Asked Questions

What is the official user-agent string for Semrush Writing Assistant?
The official user-agent string for Semrush Writing Assistant is: SemrushBot-SWA. Use this exact string in robots.txt, Nginx, Apache, or Cloudflare firewall rules to target this bot. Matching in robots.txt is case-insensitive. Verify a request genuinely comes from Semrush Writing Assistant by performing a reverse-DNS lookup on the source IP.
Is Semrush Writing Assistant safe?
Yes, Semrush Writing Assistant is a safe and legitimate crawler operated by Semrush. It follows the Robots Exclusion Protocol (RFC 9309) and can be controlled with standard robots.txt rules.
Will blocking Semrush Writing Assistant hurt my SEO?
🔶 AI Visibility Trade-off - Blocking Semrush Writing Assistant will not hurt Google or Bing rankings, but it can remove your content from AI search answers and assistant citations powered by this crawler. Block only if you have a deliberate reason.
How do I block Semrush Writing Assistant in robots.txt?
Add the following lines to your /robots.txt file:
User-agent: SemrushBot-SWA
Disallow: /

This instructs Semrush Writing Assistant not to crawl any path on your site. To block only specific sections, replace / with the path (e.g., Disallow: /blog/).
Does Semrush Writing Assistant respect robots.txt?
Semrush Writing Assistant is operated by Semrush and is expected to fetch and parse /robots.txt before crawling, following RFC 9309. For hard enforcement, combine robots.txt with server-level IP or user-agent blocking.
How do I verify if Semrush Writing Assistant is crawling my site?
Search your web server access logs for the string SemrushBot-SWA (case-insensitive: grep -i "SemrushBot-SWA" /var/log/nginx/access.log). Filter by user-agent in your log analytics tool (GoAccess, AWStats, etc.).

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