What is GoogleAgent-Mariner?
GoogleAgent-Mariner is an AI agent created by Google that can use a web browser. It can intelligently navigate and interact with websites to complete multi-step tasks on behalf of a human user. Agent Analytics can track when it visits your website.
Overview
| Operated By | |
| Expected To Follow Robots.txt | No |
| Insights Last Updated | July 10, 2026 |
Category
Expected Behavior
GoogleAgent-Mariner controls a real browser, so expect it to load pages, run JavaScript, keep cookies, and move through multi step flows the way a person would. Its path through your site follows whatever task it was given rather than a fixed crawl order, so visits look irregular. Sessions can pause on a page while the agent processes content, then jump somewhere unexpected.
GoogleAgent-Mariner's User Agent
| User Agent | GoogleAgent-Mariner |
How To Block GoogleAgent-Mariner With Robots.txt
Add this rule to your robots.txt file to request that GoogleAgent-Mariner not access your website, or use Automatic Robots.txt to request the same of all AI agents at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: GoogleAgent-Mariner # https://knownagents.com/agents/googleagent-mariner
Disallow: /GoogleAgent-Mariner Global Insights
As of July 10, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the world's top 1000 websites and their robots.txt files.
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
2% of top websites block GoogleAgent-Mariner in their robots.txt files.
Overall AI Agent Traffic
0.0% of all web traffic came from AI agents.
Frequently Asked Questions
Should I Block GoogleAgent-Mariner?
Usually no. GoogleAgent-Mariner browses on behalf of a real person who is trying to read, compare, or buy something on your site. Blocking it turns away that person, not a bot farm, and they will finish the task on a competitor's site instead. Blocking it has no effect on your search rankings. For comparison, 2% of the top websites we track already have robots.txt rules for GoogleAgent-Mariner.
Does GoogleAgent-Mariner Respect Robots.txt?
No. GoogleAgent-Mariner is not expected to honor robots.txt, so a disallow rule only states your preference. Enforce the block with firewall or server rules, then confirm in Agent Analytics that its requests actually stop.
Does GoogleAgent-Mariner Access Private Content?
It can if a user gives it access. GoogleAgent-Mariner operates a real browser session, so if someone signs in to your site through it, it sees whatever that account sees. Without credentials, it reaches only what any anonymous visitor can reach.
Why Is GoogleAgent-Mariner Visiting My Website?
Someone gave GoogleAgent-Mariner a task your site can help complete, like researching a product, comparing options, or filling out a form. It reached you through links and search results, the same way a person would.
How Can I Tell if GoogleAgent-Mariner Is Visiting My Website?
Agent Analytics tracks GoogleAgent-Mariner visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user agent string contains "GoogleAgent-Mariner". Look for sessions that browse like a person but move through pages faster than one. Keep in mind that GoogleAgent-Mariner doesn't publish a verification method, so any client can claim its user agent string and a log match is a hint rather than proof.