PageAgent Browser Enhancement Skill

Injects alibaba/page-agent v1.5.6 PageController into web pages via the browser tool's evaluate action. Gives you superior DOM manipulation compared to basic browser actions.

Key Advantages Over Basic Browser Tool

1. cursor:pointer heuristic — detects clickable elements even without semantic tags
2. Full event chain — mouseenter→mouseover→mousedown→focus→mouseup→click (not just .click())
3. React/Vue compatible input — uses native value setter to bypass framework interception
4. contenteditable support — proper beforeinput/input event dispatch
5. Indexed elements — [N]<tag> format for precise LLM-directed operations
6. Incremental change detection — *[N] marks new elements since last step

Usage Flow

Step 1: Inject PageController into the page

Use the CDP injection script (handles the 72KB library injection):