Project Mariner
Google · agentic-browsing
- name
- Project Mariner
- operator
- purpose
- agentic-browsing
- ua_substring
- robots_token
- (none — agentic browser; no published robots.txt token; successor Google-Agent carries a token)
- respects_robots
- no
- verify
- no stable user-agent token for the standalone product; identifiable only by IP/signature/behavior. Its functionality moved into the Google-Agent fetcher, which is verifiable via user-triggered-agents.json + reverse DNS to google.com.
- notes
- Google's Project Mariner (introduced Dec 2024 with Gemini 2.0) was an experimental web-browsing agent that navigated pages and took actions on a user's behalf via a Chrome extension. Google shut it down as a standalone product on 2026-05-04; its features moved into the Gemini API and Gemini Agent (see the Google-Agent record). Retained here as a deprecated agentic-browser record for history/freshness.
- canonical_name
- Project Mariner
- user_agent_token
- — no-stable-ua
- ua_full
- — no-stable-ua ↗ https://deepmind.google/technologies/project-mariner/
- bot_type
- agentic-browser
- bot_type_extension
- —
- opt_out_mechanism
- — not-applicable
- published_ip_range_url
- — verify-against-primary-at-build ↗ https://developers.google.com/search/docs/crawling-indexing/google-user-triggered-fetchers
- asn
- — verify-against-primary-at-build ↗ https://www.gstatic.com/ipranges/goog.json
- reverse_dns_suffix
- — verify-against-primary-at-build ↗ https://developers.google.com/search/docs/crawling-indexing/verifying-googlebot
- supports_web_bot_auth
- — not-applicable
- signature_agent_domain
- — not-applicable
- jwks_url
- — not-applicable
- verification_methods
IP-signature- crawl_traffic_share
- — not-applicable
- targeted_content_type
- HTML, text (interactive browsing)
- documentation_url
- https://deepmind.google/technologies/project-mariner/
- first_seen_date
- 2024-12 source
- last_verified_date
- 2026-06-15
- block_vs_allow_recommendation
- n/a — standalone product shut down on 2026-05-04; functionality moved into Gemini Agent / the Google-Agent fetcher. Manage the successor via that record.
- citation_referral_value
- n/a (deprecated standalone; see Google-Agent successor)
- cloudflare_verified_category
- — not-applicable
- status
- deprecated
- triples
["Project Mariner","operated_by","Google"]["Project Mariner","has_bot_type","agentic-browser"]["Project Mariner","succeeded_by","Google-Agent"]- attribute_sources
{"claims":["operator","bot_type","documentation_url","status","first_seen_date"],"source":"https://deepmind.google/technologies/project-mariner/","last_verified":"2026-06-15"}