Engineering notes

Umbraco's September 2025: a security patch for Umbraco 13 through the Smidge dependency, the Developer MCP Server beta moving into Umbraco's own namespace, two uSync patches, and the 2026 price list read after the fact.

Content SDK 1.1 landed and the Experience Editor did not come with it. Every account of that migration in our September 2025 harvest came from a personal blog, not from a vendor page.

Four of the month's eleven Umbraco items are about MCP and AI. An agent built an element type from a single prompt, Umbraco Commerce got an MCP proof-of-concept, and the only post that said anything about who should be allowed to do that was a uSync patch note.

Sitecore 10.4.1 requires encrypted SQL for Identity Server and greets upgraders with a login failure. Plus the Marketplace SDK's first wall, Stream on XP, and a month of XM Cloud migration guides.

The month the community installed 10.4.1 and documented what broke: Identity Server's encrypted SQL requirement, Solr 9.8.1's max-fields limit, plus MCP Server 1.0.0, Stream REST APIs and the Content SDK beta.

Sitecore 10.4.1 landed on 25 June 2025 with encrypted SQL connections, Solr 9.8.1, Identity Server on .NET 8 and a critical security fix. The community wrote it up. The same month, it wired AI agents into live instances.

Fourteen items and not one from Sitecore. Stream documented by decompiling a DLL, an MCP server built by one person, and what SUGCON 2025 left behind.

Nothing from sitecore.com in the month's harvest. What did land: a community install guide for Sitecore Stream, part four of an XP 10.4 to XM Cloud media migration, Content Hub GraphQL written up twice in one week, and an Astro SDK for JSS.