Agent directory · Autonomous agent
GoogleAgent-Mariner
Google's Project Mariner, a browser agent that carries out tasks on websites for a user.
- Run by
- Type
- Autonomous agent
- Robots.txt name
GoogleAgent-Mariner- Verifiable
- Not yet
What GoogleAgent-Mariner does
Google's Project Mariner, a browser agent that carries out tasks on websites for a user.
As an autonomous agent, it uses a website like a person would, clicking, typing and filling in forms to finish a task for someone. The kinds of AI agent that visit websites.
Should you allow it?
Make your journeys work for it. Many browser agents look like an ordinary browser, so you can't reliably block them by name; test whether they can finish your key tasks instead. A decision guide for blocking or allowing AI crawlers.
How to allow or block GoogleAgent-Mariner
GoogleAgent-Mariner reads the GoogleAgent-Mariner group in your robots.txt. To block it everywhere:
User-agent: GoogleAgent-Mariner
Disallow: /To allow it everywhere, even if another rule blocks other bots:
User-agent: GoogleAgent-Mariner
Allow: /Robots.txt is a request, not a lock: well-behaved crawlers follow it, impostors don't. Robots.txt for AI agents.
How to tell if it's really GoogleAgent-Mariner
Our registry doesn't verify GoogleAgent-Mariner against published IP ranges yet, so treat a request that uses the name as a claim, not proof: anyone can send its user agent. Check Google's documentation for how to verify it.
Other agents from Google
- Googlebot: AI and search crawler
- Google-Extended: AI training crawler
- GoogleOther: AI training crawler
- Google-InspectionTool: AI and search crawler
- Storebot-Google: AI and search crawler
- AdsBot-Google: other bot
- Gemini-Deep-Research: AI assistant
- Google-CloudVertexBot: AI training crawler
- Google-Gemini-CLI: autonomous agent
- Google-NotebookLM: AI assistant
- GoogleAgent-URLContext: AI assistant
Every Google agent, and a robots.txt for all of them →
Does GoogleAgent-Mariner visit your site? Ghost Agent Lab reads your CDN or server logs and shows every request from GoogleAgent-Mariner and 1,566+ other known agents: what they read, what your site sent back, and whether each request was genuine. See agent traffic, or check whether AI agents can use your site for free.