Browser sandbox-based security protection system
WebMCP's architectural choice of embedding the MCP server directly into the web execution environment essentially builds a dual security protection mechanism. The system is protected by both the browser homology policy and the sandbox environment.
The core of the security design is that all operations of the AI assistant are performed in the security context of the current web page and cannot exceed the scope of the user's pre-existing permissions. When a user accesses social media, the AI can perform only the operations that the user himself can perform, and cannot break through any permission limits set by the platform.
- Permission isolation: tool execution is limited to the current page security context
- Data boundaries: no cross-source access to user data from other sites
- Security validation: automatically inherits the browser's CSP and other security policies
This design fundamentally eliminates the risk of elevated privileges that can occur with traditional AI integration solutions, and conforms to the principle of least privilege for modern web applications.
This answer comes from the articleWebMCP: open source tool to run MCP servers in web pagesThe
English 
简体中文 
日本語 
Deutsch 
Português do Brasil