Jordan Matthiesen

AI tooling and developer experience PM | formerly in .NET team at Microsoft.
Avid gardener. Lover of music. Always learning the guitar.

[Jordan Matthiesen @JMatthiesen]

I love this... using GitHub Copilot as a code reviewer (on https://t.co/ZMmIMjhJNN), it will actually acknowledge if its commenting with a "nitpick". It's also a good nitpick in this case.

[Jordan Matthiesen @JMatthiesen]

The @posthog ebsite is making me super happy right now with it's simulation of an OS UI with menuing and windowing. If you leave it open long enough, it even has a screen saver!

https://t.co/jxcMbPDtNj

Also, it's a very cool set of product offerings you should check out.

[Jordan Matthiesen @JMatthiesen]

Coming up in just under an hour! This should be a fun episode.

[.NET @dotnet]

Happening TODAY LIVE at 10AM PT. Drop in for a chill #ASPNET Community Standup with @mkistler82, @lyrichardson01, and @MackinnonBuck as they dive into vibe coding an MCP server using C#.

See you here ➡️ https://t.co/ACzXihQbfX

[Jordan Matthiesen @JMatthiesen]

Adventures in the @perplexity_ai Comet browser - organizing my GitHub project! First I asked it to create issues out of a bullet list and interview me for details. Now, I had it create a project and work on stack ranking those ideas. Wonderful time saver

[Jordan Matthiesen @JMatthiesen]

@samidip @UnoPlatform Wow, congrats @samidip!

[LangChain @LangChain]

‼️LangChain & LangGraph 1.0alpha releases

Today we are announcing alpha releases of v1.0 for langgraph and langchain, in both Python and JS.

🕸️LangGraph is a low-level agent orchestration framework, giving developers durable execution and fine-grained control to run complex agentic systems in production.
🦜LangChain helps developers ship AI features fast with standardized model abstractions and prebuilt agent patterns, making it easy to build complex applications without vendor lock-in.

We are working towards an official 1.0 release in late October - please give us any feedback!

TL,DR:
1. LangGraph is largely the same as before, no breaking changes. We’ve heard good feedback about LangGraph and are excited to move to 1.0
2. New standard content blocks on messages in LangChain Core. Message formats are evolving, and so is LangChain. Backwards compatible
3. LangChain itself - high level agents and chains - is greatly changed. You should think of LangChain 1.0 as a new package - focused around a central agent abstraction, built on top of LangGraph
4. New docs site!

You can find a discussion topic here: https://t.co/wojyNFwgNu

Please give us feedback!

[Jordan Matthiesen @JMatthiesen]

I'm cooking up a new idea for a site - C# AI Buddy, a set of resources to help C# devs build AI-based solutions. early test version coming soon to get real feedback for - being super intentional since I want to iterate on it publicy, but not go broke due to AI spend. :)

[Jordan Matthiesen @JMatthiesen]

Just completed the EXCELLENT Coursera course: Retrieval Augmented Generation, led by @ZainHasan6.

https://t.co/ipidYFboQm

By far, the best survey of the topic to date. The detailed section about what to consider in deploying RAG solutions to Production was invaluable.

[Jordan Matthiesen @JMatthiesen]

Stayed up late last night troubleshooting code that just wasn't working - AI didn't help with this error so I spent hours: reducing the test case, searching for help online, trying alternate approaches, etc. Woke up today, and realized it was an async issue. It's always async.

[Mads Kristensen @mkristensen]

Join us at #MCPDevDays July 29-30!
See how Model Context Protocol is revolutionizing AI development with demos from @Microsoft, @GitHub, and amazing community partners.

Register free: https://t.co/F8zdjqBlQV
Day 1 Stream: https://t.co/xWbrgefVoR
Day 2 Stream: https://t.co/Jm48ux6egf

[Jordan Matthiesen @JMatthiesen]

Been having fun diving deeper in to AI app development with the Python ecosystem lately. So many great libraries - I'd love to see more of this type of open source ecosystem forming for .NET/C#. Beyond the excellent Microsoft-built libraries, any favorite .NET + AI libraries?

[Jordan Matthiesen @JMatthiesen]

@elbruno Very cool! I hadn't heard of TransformersSharp, awesome idea for a project

[.NET Foundation @dotnetfdn]

.NET AI Template Now Available in Preview - .NET Blog
Announcing the first preview of the .NET AI Template, for Visual Studio, Visual Studio Code, and the .NET CLI. Get started building amazing AI apps with .NET.

https://t.co/IrCeMD3fdT via Jordan Matthiesen @JMatthiesen

[Jordan Matthiesen @JMatthiesen]

Excited to share some new work with you all - Announcing Preview 1 of a new .NET AI Chat Web App Template. 🎉

https://t.co/P3Y5eLbH7c

#dotnet #ai

[El Bruno 🇨🇦 🎗️ @elbruno]

🔥 Live now with @alexthecodewolf, @elbruno, and @JMatthiesen as we explore the new Visual Studio AI Templates!
🚀 Bonus: we will also review a Semantic Search application using Chroma DB and Azure Vision!
https://t.co/q7z0ojFV3o
#dotNET #AI

[.NET @dotnet]

Unleash your inner author with the Creative Writing Assistant! 🤖✍️ This multiagent app, powered by Semantic Kernel and #dotNETAspire, helps you craft well-researched articles.

Watch agents collaborate in real-time and elevate your writing game! 💡 Blog: https://t.co/cFHbJmEAWK

[Amanda Silver @amandaksilver]

Play with #DeepSeekR1 in your local VS Code using the AI Toolkit extension (https://t.co/NR6kaEa55P)!

[Amanda Silver @amandaksilver]

GitHub Copilot Edits now available in #visualstudio. Allows you to edit multiple files at once so you can make larger changes in collaboration with GitHub Copilot.

[Jordan Matthiesen @JMatthiesen]

New sample app & blog post for you all: Build a YouTube chat app with .NET

Also, my first time really getting back to personal blogging.

https://t.co/ADe1v1bPkU

#dotnet #AI

[Jordan Matthiesen @JMatthiesen]

Are you building with .NET & AI, or interested in this? Check out the preview of the new https://t.co/9Awbk48jHI.Evaluation library:

https://t.co/rXQkDK69pZ