WebMCP Authentication

Before writing code

Fetch live docs:

1. Fetch https://webmachinelearning.github.io/webmcp/ for authentication-related sections of the spec
2. Web-search webmcp authentication session cookies browser agent for auth pattern guidance
3. Web-search site:developer.chrome.com webmcp security authentication for Chrome security model
4. Web-search site:github.com mcp-b security authentication for polyfill security guidance

Conceptual Architecture

How WebMCP Authentication Works

WebMCP's auth model is fundamentally different from backend API authentication: