Founder of Jozra · Creator of Maester · ex-Microsoft Entra Principal PM · #1 Entra fan
I make Microsoft security practical. After years as a Principal Product Manager on the Microsoft Entra team, I left Microsoft in 2026 to work full time on Maester and the free tools that admins, developers and security teams use every day.
Maester is the open-source test automation framework and security analyzer for Microsoft 365, built with a great community of contributors. It turns security best practices into tests you can run against your tenant every day.
Maester Cloud is the evidence layer on top of it: drift detection, multi-tenant visibility and years of searchable tenant history, self-hosted or fully managed.
| Tool | What it does |
|---|---|
| Graph Permissions Explorer | See exactly what data every Microsoft Graph permission exposes, before you grant it. 2M+ visits a month. |
| Graph X-Ray | Fiddler for Microsoft 365. Watches what the admin portals do and hands you the Graph PowerShell to do it yourself. |
| cmd.ms | Your Microsoft Cloud command line. Type a shortcut, land on the right admin portal or docs page. |
| Lokka | The MCP server for Microsoft 365. Lets AI agents query and manage your tenant through Microsoft Graph. |
| graph.pm | Microsoft Graph skill for AI agents. Search 27,700+ Graph APIs locally, in milliseconds. |
| idPowerToys | Conditional Access visualizer. Understand and document your CA policies. |
| Yako | A browser start page with 900+ Microsoft portals. |
| Message Center Archive | Searchable archive of Microsoft 365 Message Center posts and Roadmap updates. |
| Uninstall-Graph | Cleanly removes every Microsoft Graph PowerShell module from your machine. |
| CyberSecPods | A curated directory of cybersecurity podcasts. |
More on merill.net.
- Entra.News: my weekly newsletter on Microsoft Entra, read by 19K identity and security folks.
- Entra.Chat: my weekly podcast with the people who build and run Entra.
- MSAI Weekly: a roundup of the Microsoft AI news worth your time.
Zero Trust Assessment · Entra Exporter · MSIdentityTools · Entra PowerShell
These tools are free, ad-free and have no investors behind them. If they save you time, sponsoring me on GitHub helps keep every one of them running and free.
