F# Weekly #40, 2025 – Microsoft Agent Framework (Preview)

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Introducing Microsoft Agent Framework (Preview): Making AI Agents Simple for Every Developer – .NET Blog
• Grok 4 is now available in Microsoft Azure AI Foundry | Microsoft Azure Blog
• Roadmap for AI in Visual Studio (October) – Visual Studio Blog
• The $150 Secret Hiding in Plain Sight – Visual Studio Blog
• Visual Studio September Update – profiler agent, app modernization, and more – Visual Studio Blog
• TypeScript 7 native preview in Visual Studio 2026 – Microsoft for Developers

Videos

• Houston Haynes – Firefly – an F# compiler goes native to CPU, GPU and beyond – YouTube
• Does F# need file-based apps – Amplifying FSharp
• ASP.NET Community Standup – Vibe coding a C# MCP server
• .NET MAUI Community Standup – Live from Prague with the .NET MAUI Team

Blogs

• Unexpected Fusion – Houston Haynes

F# Language Suggestions

• Request for Delegate Generic Parameter Erasure for Span<T> Operations · Issue #1447
• Allow the use of colon in all custom operators · Issue #1446

Highlighted projects

• speakeztech/CloudflareFS: Toolkit for building modern Cloudflare Solutions with F# and Fable Compiler
• G-Research/ShapeSifter: Type-safe datatype-generic programming for F
• WyattTechnology/WAkka: F# interface for Akka.NET
• DCPRevere/jade: F# Event Sourcing Library
• cmeeren/Felicity: Boilerplate-free, idiomatic JSON:API for your beautiful, idiomatic F# domain model. Optimized for developer happiness.

New Releases

• FsToolkit.ErrorHandling 5.1.0
• SqlBulkTools.FSharp 1.1.0
• FsHttp 15.0.3
• Felicity 0.24.3
• Fesh 0.28.1
• Akka.FSharp 1.5.51
• ShapeSifter 1.1.16
• Partas.AnimeJs 0.0.8
• Prime 11.1.4
• FarNet.FSharpFar 5.1.4
• WAkka 1.5.4
• WoofWare.FSharpAnalyzers 0.1.3
• WoofWare.PrattParser 0.2.5
• WriteBetterTests.FsCheckSpy 1.0.0
• Felicity 0.24.3
• Terminal.Gui 2.0.0-develop.4573
• Feliz.Template 5.0.0-rc.1
• Vitest 1.0.0-rc.1
• Feliz 3.0.0-rc.1

That’s all for now. Have a great week.

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