Google has added a new user-agent to the user-triggered fetchers named Google-Agent. Google said the "Google-Agent user agent is rolling out over the next few weeks, and will be used by Google agents hosted on Google infrastructure to navigate the web and perform actions upon user request."
The Google-Agent user agent is associated is used by agents hosted on Google infrastructure to navigate the web and perform actions upon user request (for example, Project Mariner). It uses IP ranges from user-triggered-agents.json.
Google is also experimenting with the web-bot-auth protocol, using the https://agent.bot.goog identity.
Forum discussion at X.
Image credit to Lizzi
