The Two Walls You Hit When You Hand an Agent a Browser#

2026-07-25

One principle I hold onto when delegating work to coding agents: if the agent changed the code, the agent should verify the result itself. For a web project, that means opening a browser and looking at the screen. For this I use MCP (Model Context Protocol, the standard for connecting external tools to agents) servers such as chrome-devtools-mcp and Playwright MCP. The agent launches Chrome, opens pages, clicks around, takes screenshots, and validates its own work.