Add admintoolkit.io to Tools

Author: GitHoubi

README.md

@@ -66,6 +66,7 @@
 - [webmaxru/agent-skills: WebMCP](https://github.com/webmaxru/agent-skills/tree/main/skills/webmcp) - Agent skill for implementing and debugging browser WebMCP integrations in JavaScript and TypeScript web apps
 - [Conscriba](https://conscriba.com/) — Automatic WebMCP Creation for AI Agents, Analytics & Tracking
 - [WSG WebMCP Experiment](https://mgifford.github.io/wsg-webmcp-experiment/) - An effort to learn about WebMCP by applying it to the [Web Sustainability Guidelines](https://github.com/w3c/sustainableweb-wsg)
+- [admintoolkit.io](https://admintoolkit.io/) - A suite of 24 read-only WebMCP tools for infrastructure diagnostics, including a WebMCP tool validator.
 
 ## Tutorials