Bun adds a new feature, "Headless Browser Automation," that lets users operate headless browsers from the command line

Bun v1.3.12 adds headless browser automation from the CLI or Bun APIs.

Users can launch, navigate, click, and take screenshots without opening a full browser UI.

On macOS, Bun uses WKWebView by default; on other platforms it can use Chrome or Chromium via the DevTools Protocol.

The feature lowers setup friction for browser testing and AI-driven web automation, including agent workflows like Claude Code.