Jürgen Gutsch's Avatar

Jürgen Gutsch

@juergengutsch

Software Engineer, AppSec and QA Responsible at YOO AG, .NET developer for 20+ years, former Microsoft MVP, author, and blogger.

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19.10.2023
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Latest posts by Jürgen Gutsch @juergengutsch

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Aspire—Your Stack, Streamlined Aspire streamlines your development workflow with code-first control, modularity, and observability for distributed applications.

Aspire Conf - March 23, 2026 aspire.dev/aspireconf/

#aspire #dotnet

23.02.2026 15:23 👍 5 🔁 5 💬 0 📌 0

I was there six years ago after being married for 16 years. Stay strong.

24.02.2026 12:12 👍 1 🔁 0 💬 0 📌 0
Post image

.NET 11 Preview 1 is now available! by .NET Team devblogs.microsoft.com/dotnet/dotne... #aspnetcore

19.02.2026 18:29 👍 1 🔁 1 💬 0 📌 0
text reads: .net 11 Preview 1

text reads: .net 11 Preview 1

.NET 11 Preview 1 is now available!
Learn about the major enhancements across...
⚡ C# + 🟣 .NET Runtime + 🛠️ SDK
🌐 ASP.NET Core + 🖥️ Blazor + 📱 .NET MAUI
= full-stack .NET with web, SPA, mobile & desktop from one language ❤️
Check out the blog and get started: is.gd/TtTFZ9

17.02.2026 14:40 👍 4 🔁 2 💬 0 📌 0

Maybe I'm a control freak when working with Copilot 😂

17.02.2026 14:46 👍 0 🔁 0 💬 0 📌 0

Do you read them all?
IMO, the downside of throwing so much information into the models is that this information can contain implementation descriptions that you don't want.
That's why I keep it small, restart conversations, and switch models. Also, delete those .md files to have fresh new contexts

17.02.2026 14:45 👍 1 🔁 0 💬 2 📌 0

That's really huge .md files :-D

17.02.2026 14:40 👍 0 🔁 0 💬 1 📌 0

It's amazing what's possible with AI.

In December, I started a project to create a "team" of AI agents that help to make web projects more secure.

I'm using AI to create intelligent agents.

17.02.2026 07:51 👍 0 🔁 0 💬 0 📌 0

Why? I let Copilot take small steps, and I review every change. I want to understand what Copilot does. I want to be in the loop on major changes and ask CP to let me review after each step of an implementation plan. The pragmatic way, this avoids slop and overengineering.

17.02.2026 07:45 👍 1 🔁 0 💬 1 📌 0

Interesting.

I'm missing something between "Claude Opus Era" and "Agentic Coding Workflow".

I'm using the wise coding workflow. Small content windows. Switching models. I'm writing requirements, asking, discussing, and reviewing.

Copilot is my junior pair programming partner who codes.

17.02.2026 07:38 👍 0 🔁 0 💬 1 📌 0
Step A — “Prompt for .md Plan”
Icon: A person sitting at a computer terminal.

Text: “Create .md plan.”

Caption: Indicates that the process begins by prompting an LLM to create a Markdown plan file.

Step B — “Create Plan & Diagrams”
Icon: A flowchart diagram with the Mermaid logo.

Caption: Describes generating a plan that includes Mermaid diagrams.

Step C — “Review & Refine”
Icon: A magnifying glass over a document.

Caption: Suggests reviewing the Markdown file, reading the plan, and examining the diagrams.

Step D — “Execute the Plan”
Icon: A robotic arm pressing a button labeled “RUN.”

Text: “Execute .md plan.”

Caption: Indicates that once approved, the LLM should execute the steps described in the Markdown plan.

Step E — “Validate with Playwright MCP” (Optional)
Icon: Test tubes and a button labeled “TEST,” along with the Playwright logo.

Caption: Notes that validation using Playwright MCP is optional.

Step A — “Prompt for .md Plan” Icon: A person sitting at a computer terminal. Text: “Create .md plan.” Caption: Indicates that the process begins by prompting an LLM to create a Markdown plan file. Step B — “Create Plan & Diagrams” Icon: A flowchart diagram with the Mermaid logo. Caption: Describes generating a plan that includes Mermaid diagrams. Step C — “Review & Refine” Icon: A magnifying glass over a document. Caption: Suggests reviewing the Markdown file, reading the plan, and examining the diagrams. Step D — “Execute the Plan” Icon: A robotic arm pressing a button labeled “RUN.” Text: “Execute .md plan.” Caption: Indicates that once approved, the LLM should execute the steps described in the Markdown plan. Step E — “Validate with Playwright MCP” (Optional) Icon: Test tubes and a button labeled “TEST,” along with the Playwright logo. Caption: Notes that validation using Playwright MCP is optional.

The Agentic Coding Workflow - blazorhelpwebsite.com/ViewBlogPost...

17.02.2026 02:59 👍 3 🔁 1 💬 0 📌 1
Preview
Tiny Tool Town 🏘️ A delightful showcase for free, fun & open source tiny tools. Stupid-delightful software made with love.

www.tinytooltown.com

12.02.2026 04:28 👍 79 🔁 17 💬 3 📌 0

Awesome! Thanks for sharing :-)

06.02.2026 06:37 👍 0 🔁 0 💬 0 📌 0

That makes total sense

05.02.2026 07:25 👍 0 🔁 0 💬 1 📌 0

Same. But it also transitions from a simple, fast Editor to a full-blown IDE.
I should start using VS Code profiles to keep it slim and fast depending on the stack I'm using. Also, I need to switch off new MCP tools I don't need from time to time.
However, the Copilot integration is great :-D

05.02.2026 07:21 👍 0 🔁 0 💬 1 📌 0
VATIKAN
Papst: "Abtreibung ist größter Zerstörer des
Friedens"

VATIKAN Papst: "Abtreibung ist größter Zerstörer des Friedens"

Ich dachte ja, größte Zerstörer des Friedens wären eitle, unsichere Männer mit Armeen. Aber nein, es sind schon wieder die Frauen von nebenan.

01.02.2026 20:53 👍 1867 🔁 416 💬 86 📌 8

People love to help when they can. It makes people feel needed and valuable (no matter the context).
Because of this, asking for help is a kind of showing respect to them and their abilities.
Meaning, asking for help is never a sign of weakness; it's the opposite. It empowers them and you.

02.02.2026 07:17 👍 1 🔁 0 💬 1 📌 1

totally 🙈

21.01.2026 14:16 👍 0 🔁 0 💬 0 📌 0
Aspire for JavaScript developers Aspire 13 brings first-class JavaScript and TypeScript support with Node.js, Vite, service discovery, observability, and production-ready Docker publishing.

JavaScript & TypeScript join first class in Aspire 13 ✈️

Run Vite, Node.js, and full-stack JS apps with service discovery, built-in telemetry, and production-ready containers.

Read more 👉 devblogs.microsoft.com/aspire/aspir...

#Aspire #JavaScript #TypeScript #DevTools

12.01.2026 19:48 👍 17 🔁 7 💬 0 📌 0

Interesting 👍
Useful to quickly set up an AppHost. Guess setting up resource properties will be enhanced. For example, specifying an image for a container resource, etc.

23.12.2025 08:15 👍 0 🔁 0 💬 1 📌 0

Actually, @microsoftlearn.bsky.social is quite good. And it's great to see that there is documentation for beta stuff as well. But as always, development is faster than documentation, and I'd like to see which version works with the current documentation.

22.12.2025 08:25 👍 0 🔁 0 💬 0 📌 0
LlmTornado LlmTornado Documentation

As an alternative to Microsoft Agent Framework, try the LlmTornado to write AI Agents in C#: llmtornado.ai

21.12.2025 16:47 👍 0 🔁 0 💬 1 📌 0

I know it's all beta and APIs change a lot, but it's a bit frustrating that almost every demo is already outdated just a couple of weeks later. It would help a lot to specify which version of the packages was used when the demo was written.

19.12.2025 07:28 👍 1 🔁 1 💬 1 📌 0

Every Microsoft Agent Framework tutorial these days:
* Create the app
* Add prerelease packages
* Copy the demo code
* Set configuration
* dotnet run
* fail 🤬

@microsoftlearn.bsky.social Please pin the package versions in all blog posts and tutorials to the version that was used in the demo.

19.12.2025 07:18 👍 0 🔁 0 💬 1 📌 0
Aspire 13.1 - Our holiday gift to you Aspire 13.1 adds first-class AI agent support, CLI MCP integration, dashboard improvements, Azure enhancements, and end-to-end HTTPS for local development.

🎁 Aspire 13.1 just dropped… and it quietly fixes a lot of stuff:

• Real HTTPS in local dev
• Built-in AI agent support
• New ASP.NET + React starter
• Dashboard finally shows what you need

Holiday shipping, but make it better 👀
devblogs.microsoft.com/aspire/aspir...

#aspire #devtools #ai

17.12.2025 22:27 👍 36 🔁 12 💬 2 📌 0
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Was passiert mit Deinem Kapital, wann fließt der Zins, wie bleibst Du im Loop? Hier sind die Short Answers.

Good Morning Swiss Friends and wine lovers
A co-worker is looking for investors for his wine cooperative. If you are interested in supporting him and getting complimentary wine back, have a look at this page: [in German] offline-wein.ch/investieren

16.12.2025 07:03 👍 1 🔁 0 💬 0 📌 0
The new owasp top ten, the list of items

The new owasp top ten, the list of items

Big news in #AppSec: the #OWASP Top 10 2025 is now available! I'm part of the project team and ALL OF US want every dev, security engineer, and leader to read it (please).

https://twp.ai/E6ClNO

1/5

12.12.2025 18:50 👍 9 🔁 5 💬 2 📌 0

HR security is a separate topic, but also part of the broader security journey.

Anyway, when I started working on Application Security, I realized it's more than just caring about secure development. I had to involve management, HR, sales, and procurement.

11.12.2025 06:46 👍 1 🔁 0 💬 0 📌 0

This is a vast and interesting topic. Yes, please provide a course, talks, and blog posts to raise awareness.

Doesn't this topic also somehow include (or at least tackle) contractors that provide code or any part to the product to build?

11.12.2025 06:41 👍 1 🔁 0 💬 2 📌 0
Preview
EF Core Power Tools - Visual Studio Marketplace Extension for Visual Studio - Useful design-time DbContext and database features, added to the Visual Studio Solution Explorer context menu. When right-clicking on a C# project, the following context...

The EF Core Power Tools saves me hours. Thanks to @erikej.bsky.social for building this great VS Extension:

marketplace.visualstudio.com/items?itemNa...

09.12.2025 13:30 👍 2 🔁 0 💬 0 📌 0