WebMCP Tools

Implement tools using the W3C WebMCP API (navigator.modelContext) so AI agents, browser assistants, and assistive technologies can call structured JavaScript functions on your page.

When to Apply

Reference these guidelines when:

• Adding tools to a web page for browser AI agents
• Registering callable functions via navigator.modelContext
• Exposing existing page functionality to agents
• Building cooperative human-in-the-loop agent workflows

Essential Rules