Bot intelligence record

GoogleAgent-Mariner

Review first

Claimed Google Project Mariner user-agent token for agentic browser activity.

Ai Agentic Browsing Observed Confidence: Low Verified: No robots.txt: Unknown
Operator
Google
Type
Ai
Source type
Observed
Last checked
2026-06-02

User-Agent Pattern

Google
GoogleAgent-Mariner
Verification note

User-agent strings are identification signals, not proof of identity. Confirm important allow, block, or rate-limit decisions with logs, DNS or IP evidence, request behavior, or operator documentation when available.

Robots.txt Snippet

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User-agent: GoogleAgent-Mariner Disallow: /

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Handling Guidance

Depends

Use this record as bot intelligence, then verify the request source and behavior before allowing, blocking, or rate limiting.

Claimed user-agent token for Google Project Mariner or related agentic browsing activity.

Record Details

Structured data
Operator
Google
Family
Google Mariner
Type
Ai
Purpose
Agentic Browsing
Identity type
Observed
Confidence
Low
Last verified
2026-06-02
Last checked
2026-06-02
Source type
Observed
Verification
Low-confidence record. Google documents Google-Agent and common crawlers, but this exact token should be verified against current Google documentation or server logs.
Spoofing risk
User-agent strings can be spoofed. Pair the claimed identifier with operator documentation, IP verification, reverse DNS, signatures, or other available trust signals before creating low-friction allow rules.

Notes

GoogleAgent-Mariner is listed in the Botcrawl directory as a ai bot from Google Mariner. The primary identifier for log review is GoogleAgent-Mariner.

Identification

  • User-agent pattern: GoogleAgent-Mariner
  • Family: Google Mariner
  • Type: Ai
  • Kind: Agent

Common use

Claimed user-agent token for Google Project Mariner or related agentic browsing activity.

Verification and handling

Confirm the user-agent against server logs and use published operator documentation, IP ranges, reverse DNS, signatures, or other trust signals when available.

Directory guidance marks the risk level as Neutral and the blocking decision as Depends. Do not rely on the user-agent string alone because user-agent strings can be copied or spoofed.

Robots.txt handling: Unknown.

Evidence and Source

  • Low-confidence record. Google documents Google-Agent and common crawlers, but this exact token should be verified against current Google documentation or server logs.
  • Match `GoogleAgent-Mariner` as a case-insensitive substring in HTTP user-agent logs. Do not treat a user-agent match alone as proof of identity for allow-listing.
  • Claimed user-agent token for Google Project Mariner or related agentic browsing activity.
  • User-agent strings can be spoofed. Pair the claimed identifier with operator documentation, IP verification, reverse DNS, signatures, or other available trust signals before creating low-friction allow rules.

https://momenticmarketing.com/blog/ai-search-crawlers-bots

Same operator: Google

ProjectShield-UrlCheck Safe

ProjectShield Url Check

ProjectShield Url Check is a security scanner from Google used for security checks, malware review, or abuse prevention.

Operator and family: Google Type: Security
Verified robots.txt: No Block: No Verified Bot
GoogleOther-Image Neutral

GoogleOther-Image

GoogleOther-Image is an AI crawler from Google used for AI-related crawling, retrieval, search, or assistant activity.

Operator and family: Google Type: Ai Purpose: Ai Training
Verified robots.txt: Yes Block: Depends Official Documented
GoogleOther-Video Neutral

GoogleOther-Video

GoogleOther-Video is an AI crawler from Google used for AI-related crawling, retrieval, search, or assistant activity.

Operator and family: Google Type: Ai Purpose: Ai Training
Verified robots.txt: Yes Block: Depends Official Documented
GoogleMessages Safe

GoogleMessages

GoogleMessages is a preview or prefetch bot from Google used to fetch pages for previews, unfurls, or user-triggered rendering.

Operator and family: Google Type: Preview
Verified robots.txt: No Block: Depends Official Documented

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