Firecrawl Agent: User Agent, robots.txt Rules & Safety

Q: What is the official user-agent string for Firecrawl Agent?

The official user-agent string for Firecrawl Agent is: FirecrawlAgent. 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 Firecrawl Agent by performing a reverse-DNS lookup on the source IP.

Q: How do I block Firecrawl Agent in robots.txt?

Add the following lines to your /robots.txt file: User-agent: FirecrawlAgent Disallow: / This instructs Firecrawl Agent not to crawl any path on your site. To block only specific sections, replace / with the path (e.g., Disallow: /blog/).

Q: How do I verify if Firecrawl Agent is crawling my site?

Search your web server access logs for the string FirecrawlAgent (case-insensitive: grep -i "FirecrawlAgent" /var/log/nginx/access.log). Filter by user-agent in your log analytics tool (GoAccess, AWStats, etc.).

Quick Facts

User-Agent:: FirecrawlAgent
Category:: AI & LLM Bots
Operator:: Firecrawl
Safety:: Use Caution
Blocking Impact:: Medium - Minor visibility trade-off
SEO Impact Score:: 5/10
Official docs:: www.firecrawl.dev

What is Firecrawl Agent?

Firecrawl Agent is a developer-facing extraction agent operated by Firecrawl. It fetches and structures web content on behalf of applications and AI agents built on Firecrawl's platform. Traffic volume depends on how third-party developers configure it, so monitor your logs if you see heavy activity.

Firecrawl Agent is a developer-facing extraction agent operated by Firecrawl. It fetches and structures web content on behalf of applications and AI agents built on Firecrawl's platform. Traffic volume depends on how third-party developers configure it, so monitor your logs if you see heavy activity. Firecrawl Agent uses the user-agent token FirecrawlAgent. 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 Firecrawl Agent?

⚠️ **Minor Trade-off** - Blocking Firecrawl Agent has no effect on classic search rankings, but you may reduce your visibility inside AI-powered search and assistant answers. Decide based on whether you want your content cited by Firecrawl Agent.

Review your goals before blocking; weigh AI visibility against crawl load.

How to block Firecrawl Agent with robots.txt

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

Block completely (robots.txt)

User-agent: FirecrawlAgent
Disallow: /

Allow all (robots.txt)

User-agent: FirecrawlAgent
Allow: /

Block private only (robots.txt)

User-agent: FirecrawlAgent
Disallow: /private/
Disallow: /api/
Disallow: /admin/
Allow: /

Nginx server block

# Nginx: Hard-block Firecrawl Agent
if ($http_user_agent ~* "FirecrawlAgent") {
    return 403 "Bot blocked";
}

Apache .htaccess

# Apache: Hard-block Firecrawl Agent
SetEnvIfNoCase User-Agent "FirecrawlAgent" bad_bot
Order Allow,Deny
Allow from all
Deny from env=bad_bot

Meta robots tag

X-Robots-Tag header

X-Robots-Tag: noindex, nofollow

Is Firecrawl Agent safe to allow?

Firecrawl Agent is **generally legitimate but warrants caution**. It is operated by Firecrawl. Review its crawl behaviour in your logs and apply robots.txt or rate-limiting if its activity is heavier than you expect.

Verify by reverse-DNS lookup: legitimate Firecrawl Agent requests resolve to Firecrawl's domain.

What does Firecrawl Agent do?

Understanding Firecrawl Agent's purpose helps you decide whether to allow or block it.

Extracts and structures web content for developer applications
Powers AI agents built on the operator platform
Volume depends on third-party developer configuration
Monitor logs if you notice heavy activity
Can be rate-limited via robots.txt or server rules

Frequently Asked Questions

What is the official user-agent string for Firecrawl Agent?

The official user-agent string for Firecrawl Agent is: FirecrawlAgent. 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 Firecrawl Agent by performing a reverse-DNS lookup on the source IP.

Is Firecrawl Agent safe?

Firecrawl Agent is **generally legitimate but warrants caution**. It is operated by Firecrawl. Review its crawl behaviour in your logs and apply robots.txt or rate-limiting if its activity is heavier than you expect.

Will blocking Firecrawl Agent hurt my SEO?

⚠️ **Minor Trade-off** - Blocking Firecrawl Agent has no effect on classic search rankings, but you may reduce your visibility inside AI-powered search and assistant answers. Decide based on whether you want your content cited by Firecrawl Agent.

How do I block Firecrawl Agent in robots.txt?

Add the following lines to your /robots.txt file:

User-agent: FirecrawlAgent
Disallow: /

This instructs Firecrawl Agent not to crawl any path on your site. To block only specific sections, replace / with the path (e.g., Disallow: /blog/).

Does Firecrawl Agent respect robots.txt?

Firecrawl Agent is operated by Firecrawl 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 Firecrawl Agent is crawling my site?

Search your web server access logs for the string FirecrawlAgent (case-insensitive: grep -i "FirecrawlAgent" /var/log/nginx/access.log). Filter by user-agent in your log analytics tool (GoAccess, AWStats, etc.).