Editor's note
I put together another intentionally mixed issue today, because that’s usually where the best practical learning shows up. The VS Code agent workflow session and the new .NET agent governance toolkit both stood out as useful signals for where AI tooling in the .NET stack is heading. I also liked the EF Core migrations piece because it tackles a mistake teams keep repeating until deployment day makes it painfully obvious.
Agent workflows, APIs, and EF Core
Jasen Fici
May 26, 2026
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Today's Articles
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Jasen's take on today's picks
Agent-First Development Workflows in VS Code with Brigit Murtaugh
A solid look at agent-first workflows in VS Code, with durable workflow ideas that move beyond toy AI demos.
How to upload files in an ASP.NET Core Web API
Straightforward, practical ASP.NET Core guidance. File uploads sound simple until validation, storage, and request handling details pile up.
Announcing Agent Governance Toolkit MCP Extensions for .NET
Worth watching if you’re building MCP-based tooling. Governance, scanning, and response sanitization are timely additions.
Just shows that nobody cares about debugging the parity flag any more
Not a .NET post, but classic Raymond Chen: low-level history, debugging trivia, and the kind of detail most of us never think about.
Task vs ValueTask in .NET: What They Are, When to Use Each, and Why It Matters
Good refresher on when ValueTask helps and when it just adds complexity. Async performance advice needs this kind of nuance.
Azure IaaS: Deploy high-performance workloads with a system-level approach
Useful cloud performance framing: compute, storage, and networking have to be tuned together, not in isolation.
10 .NET 10 API Anti-Patterns That Break Production (And How to Fix Them)
Production anti-pattern lists can be hit or miss, but this one covers several failure modes teams actually ship.
EF Core without migrations - it's only a matter of time
I’m always glad to see this said plainly: skipping migrations usually works right up until it really doesn’t.
I Scaled a .NET App Toward 1M Users — Here’s What Actually Matters
Scaling stories are best when they focus on tradeoffs instead of hype, and this one leans in that direction.
Postmortems are evergreen. The value here is in how a long-stable production system still fails unexpectedly.
VSA + CQRS without turning into a framework: the shared language your team has been wanting
Interesting architectural middle ground for teams that want CQRS and shared language without building a mini framework.
A handy roundup if you want another pass across the broader .NET news stream this week.
Moving Beyond MediatR: Implementing Cross-Cutting Concerns with Native .NET Dependency Injection
This should resonate with teams reconsidering MediatR and looking for lighter-weight cross-cutting approaches in native DI.