Mozilla rolled out Firefox DevTools MCP 0.10.6 a few days ago, giving AI assistants a much less annoying way to interact with your open browser tabs.

If you have not messed around with it yet, this tool basically acts as a bridge that lets AI agents like Claude or Cursor look inside Firefox and click around on your behalf. It fits right into the company’s wider strategy after Mozilla launched its new AI-era nonprofit earlier this year to coordinate these exact kinds of projects.

The headline addition in version 0.10.6 is a new print_page command that lets an AI assistant export whatever web page you are viewing directly into a PDF file.

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Mozilla developer Julian Descottes noted in the release announcement that it “saves the current page as a PDF file and has optional landscape and background options” while added support “uses print CSS, so you can use it to check print styles” without manually opening the print preview menu yourself.

What you will probably appreciate more in day-to-day use is how the tool handles background tabs now. Previously, asking an AI agent to list, navigate, or close pages would aggressively pull every single tab to the front of your screen.

The update also stops the tool from listing unloaded or restored tabs from old sessions that you have not actually clicked on yet. If a tab takes longer than a second to hand over its title, the server just labels it as unknown and moves on instead of getting stuck.

Mozilla also fixed one annoying issue with profile paths where the server kept generating new nested folders instead of reusing the existing browser profile it already made. Now it drops a tiny marker file inside the folder so it remembers to reuse the same spot next time.

Of course, letting bots poke around your browser comes with valid concerns, especially since we recently saw how a Firefox AI chatbot flaw could expose email login codes through a malicious website.

 
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PiunikaWeb’s Take

Having tested local AI setups and browser automation tools quite a bit, the tab-focus fix is easily the most practical part of this patch. Anyone who has tried hooking an AI agent up to a browser knows how unusable your computer becomes when the bot keeps stealing window focus every two seconds just to check a URL. So moving this to the background will be a breath of fresh air.

And while Mozilla is clearly leaning hard into agentic workflows, the Firefox security team recently explained their strict review rules for AI tools. Plus, regular users who want nothing to do with any of this can still rely on the Manage AI search bar shortcut to shut built-in AI features off completely.

Developers who want to grab the 0.10.6 update can pull it directly from npm right now or check out the source code over on GitHub.

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Dwayne Cubbins
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I cover fast-moving stories across apps, online platforms, and everyday tech — phones, wearables, consoles, and whatever else people are fighting with this week. Bugs, rollouts, scams, policy enforcement, and the occasional internet-culture rabbit hole are all fair game. My goal is simple — make confusing tech news readable. When I'm not working, I'm working out or chilling with my dog. Got a tip? You can find me on X @dcubbins.