JSNation US 2026

You were wrong about MCP being dead, and you probably ignored WebMCP. Now it's time to skill up.Agents are increasingly part of every workflow we do, but many websites and app haven't adapted yet. first-party integrations ship without a UI. Screen scraping is expensive.

JavaScript has been around for almost 30 years and we are still finding ways to hurt ourselves with it.Sit back, relax, and join me on this journey through the history of JS security vulnerabilities. We will be starting in the days of innerHTML abuse and Cross-Site Request Forgery, moving along through the JSON hijacking era, making a stop to take a look at npm supply chain abuse, and landing in what we’re all dealing with presently: how AI assisted coding is introducing new vulnerabilities in w

QUIC in Node.js has been a work in progress for a long time and we're very nearly there. If you want to know how to use it, you can refer to the docs. If you want to know some of the gnarly details of what's happening under the API, this is the talk. We're going to go deep.

Frontier coding agents routinely ship hundreds of lines of legacy JavaScript for UI patterns the web platform now handles natively. Drawing on Modern Web Guidance, an agent skill with 200+ web development tasks, we’ll explore why models lag behind the platform, and how to steer and verify them in practice.

I have been running an AI second brain as a developer for the past year, and it saves me at least 20 hours every week. It knows my repos and the conventions in each one, dispatches coding work to run in the background, drafts my email replies, and pings me on Slack when something needs my attention. In this talk I will show you how to build one in TypeScript.We will walk through the four parts that make it work. The memory is just markdown files that the agent writes to and curates itself.

In this talk, we’ll explore how to build multimodal AI agents that understand voice, interpret images, hold short-term memory, and respond intelligently - all running entirely in the browser. No server, no cloud APIs, and no installation. Using modern tools like WebGPU and WebAssembly, we’ll see how far the open web has come in enabling real-time, privacy-preserving AI experiences.

AI has made code generation nearly free, but reliable systems still require architectural intent. While the world is moving toward having many agents orchestrate and manage your code, this approach can also lead to brittle orchestration and unverified execution. So in this talk, we'll focus on the right primitives you can use to turn rapid prototypes into coherent production systems. Learn how to design agent infrastructure that offers high observability and scales effectively.