Yahoo Slurp

Safe Block: Depends Verified robots.txt: Yes

Yahoo! Slurp was the search engine crawler for Yahoo's search engine.

Key facts

Operator: Yahoo
Family: Yahoo
Purpose: Indexing
User-Agent: Yahoo! Slurp
Should you block it?: Depends
Verified: Yes
Respects robots.txt: Yes
Identity type: Unknown
Confidence: Medium
Last verified: 2026-04-01
Last checked: 2026-04-01

Bot details

Identity

User-Agent: Yahoo! Slurp
robots.txt token: Yahoo! Slurp
HTTP user-agent: Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp) sieve-gq1/1560642271-0

Ownership

Operator: Yahoo
Family: Yahoo
Type: Search
Purpose: Indexing

Verification and trust

Source type: Unknown
Confidence: Medium
Last verified: 2026-04-01
Last checked: 2026-04-01
Verification: Validate the identifying user-agent or signature against the operator documentation before creating hard allow rules.
Operator URL: http://help.yahoo.com/help/us/ysearch/slurp
Source URL: http://help.yahoo.com/help/us/ysearch/slurp
Spoofing risk: User-agent strings can be spoofed. For allow-listing or low-friction rules, pair the published identifier with operator documentation or cryptographic verification when available.

Blocking and detection

Robots

User-agent: Yahoo! Slurp
Disallow: /

Cloudflare

(http.user_agent contains "Yahoo! Slurp")

Advanced server rules

Apache

RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Yahoo\! Slurp [NC]
RewriteRule ^ - [F,L]

Nginx

if ($http_user_agent ~* "Yahoo! Slurp") { return 403; }

Notes

Slurp was the search engine crawler for Yahoo’s search engine.

Known user-agent patterns: Yahoo! Slurp Known user-agent strings: Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp) sieve-gq1/1560642271-0 Robots.txt handling in the directory: yes.

Operator documentation: http://help.yahoo.com/help/us/ysearch/slurp

Evidence and source

Validate the identifying user-agent or signature against the operator documentation before creating hard allow rules.
Yahoo! Slurp was the search engine crawler for Yahoo's search engine.
User-agent strings can be spoofed. For allow-listing or low-friction rules, pair the published identifier with operator documentation or cryptographic verification when available.

http://help.yahoo.com/help/us/ysearch/slurp