Engineering and product notes
How AI agents actually use browsers, what works in production, what doesn't, and how MultiZen is built.
MultiZen vs Browserbase: cloud headless vs local AI-native browser
Both serve AI agents. They optimize for different workloads. Here's a fair side-by-side: pricing, fingerprints, persistence, MCP coverage, where each wins.
What is an AI Agent Browser? Complete Guide for 2026
An AI agent browser is a desktop or cloud browser that exposes navigation, click, extract, and authentication primitives to LLMs through MCP or API. Here's how it differs from traditional browsers, anti-detect tools, and headless automation.
Anti-detect MCP: why AI agents need fingerprint isolation
Headless Chrome triggers Cloudflare 403s on ~20% of the web. Generic MCP browser servers don't fix this — they just hide the engine. Real anti-detect at the MCP layer means JA3/JA4 TLS, real WebGL, real Canvas, per-profile fingerprint isolation. Here's why it matters and how it works.
How to give AI agents persistent browser sessions through MCP
Most AI agent browser stacks lose login state between tool calls. Here's how MCP servers preserve cookies, localStorage, and authentication across an entire agent run — and why that matters for real workflows.