精选理由
Cloudflare 把内部用的 WriteGuard 开放了，MCP 服务器能按工具精细控制权限，私测版可申请。
Cloudflare 推出 WriteGuard 私有测试版，为 MCP 服务器提供细粒度访问控制。该工具最初用于内部管理员工对 MCP 服务器的写权限，现开放给 Cloudflare 的 MCP 门户用户。WriteGuard 可限制每个工具调用的权限，避免依赖人工配置。
原文 · Cloudflare Blog
WriteGuard: fine-grained controls for MCP Servers
At Cloudflare, we knew we could not depend on every employee to configure every agent perfectly or watch every tool call. Before expanding write access across our own internal MCP servers, we built WriteGuard. We are now bringing those controls to Cloudflare MCP server portals through a private beta.