rgarcia

Linux userfaultfd is fascinating and seems like a slam dunk when running a large fleet of mostly homogenous VMs. For a kernel feature that's been around for over a decade it's surprising how little content there is out there about how it's used in practice, so great to see this post.

This is great. I'm all for agents calling structured tools on sites instead of poking at DOM/screenshots.

But no MCP server today has tools that appear on page load, change with every SPA route, and die when you close the tab. Client support for this would have to be tightly coupled to whatever is controlling the browser.

What they really built is a browser-native tool API borrowing MCP's shape. If calling it "MCP" is what gets web developers to start exposing structured tools for agents, I'll take it.

The article assumes that AI coding is thoughtless, but prompting is writing, and writing is thinking. If you approach AI coding the same way as regular programming, your thinking phase involves crafting a prompt that describes your thoughts.

It snapshots / pauses the entire unikernel instance after launching chromium, and then resumes the instance in <20ms with exactly the same state.