![Weekly Recap: GitHub Copilot CLI, MCP in C#, and Modular Monoliths [July 2026]](https://devleader-d2f9ggbjfpdqcka7.z01.azurefd.net/media/SquareBanner.webp)
This week: This recap dives into GitHub Copilot CLI workflows, custom agents, and permission boundaries, alongside practical MCP client, server, and authentication patterns in C#. You'll also find hands-on guides for modular monolith design, DDD, testing, Roslyn analyzers, and migrating a monolith with the Strangler Fig pattern. The videos cover putting Copilot agents to work, using AI as an engineering manager, asking better questions, navigating toxic culture, and leading a struggling team.
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Weekly Recap
Featured this week: Testing Roslyn Analyzers with Microsoft.CodeAnalysis.Testing in C# -- if you only read one thing this week, start here.
Putting My Copilot CLI To Work - Principal Engineering Manager AMA
I've been cooking after hours with my Copilot agents. I figured I'd spend a couple of hours and walk through what I am building and how I am building it so you can see how I am putting my agents to work.
As with all livestreams, I'm looking forward to answering YOUR questions! So join me live and ask in the chat, or you can comment now, and I can try to get it answered while I stream.
How Are Engineering Managers Using AI Outside Of Coding?
In this video, I talk about how I am going to try some different ways to use AI more as a manager outside of just coding tasks.
Ask Better Questions | Stop Appearing Clueless at Work
From the comments this time, this viewer wanted perspective on getting clarity without coming across as incompetent as a developer.
From Startup to Toxic? How Company Culture Can Go Wrong
From the ExperiencedDevs subreddit, this developer wanted perspectives on the toxic blame culture that evolved as their company grew.
Tech Lead in a Broken Team? What You Need to Do First
From the ExperiencedDevs subreddit, this developer wanted perspectives on their new tech lead position and finding their fit.
Testing Roslyn Analyzers with Microsoft.CodeAnalysis.Testing in C#
Master testing Roslyn analyzers using Microsoft.CodeAnalysis.Testing in C#. Learn NuGet setup, diagnostic markers, code fix testing, and CI integration.
GitHub Copilot CLI Agentic Workflows: Delegating Real Work to Your Terminal
GitHub Copilot CLI agentic workflows help developers plan, test, review, use /fleet, and delegate scoped feature work from the terminal with control today.
Real-World Roslyn Analyzer Examples in C#: Naming, Null Checks, and Log Validators
Explore production-quality roslyn analyzer examples in C# -- naming conventions, null guard enforcement, and structured log validators you can adapt today.
Strangler Fig Pattern in C#: Refactoring a Monolith to Microservices
Learn how to use the Strangler Fig pattern in C# to incrementally migrate a monolith to microservices. Step-by-step guide with real .NET code and YARP routing examples.
Securing Remote MCP Servers in C#: OAuth 2.0, JWT, and Protected Resource Metadata
Secure MCP server authentication in C# with OAuth protected resource metadata, JWT bearer validation, authorization filters, and claims-aware MCP tools.
GitHub Copilot CLI Custom Agents and Skills
GitHub Copilot CLI custom agents guide: compare instructions, skills, .agent.md files, and SKILL.md workflows for extensible team developer workflows.
Roslyn Analyzers vs Incremental Source Generators: Understanding the Pipeline
Understand Roslyn analyzers vs incremental source generators -- how each hooks into the compilation pipeline and when to combine both in one NuGet package.
Modular Monolith Database Design in C#: One Database or Multiple?
Modular monolith database design in C#: compare shared DbContext, DbContext per module, and database per module .NET strategies with real EF Core code.
Building an MCP Client in C#: Connecting, Discovering, and Calling Tools
Build an MCP client in C# that connects over stdio or HTTP, discovers capabilities, calls tools, handles result content, and manages lifecycle safely.
Testing a Modular Monolith in C#: Unit and Integration Test Strategies
Learn how to test a modular monolith in C# with unit and integration test strategies. Verify bounded context isolation, cross-module event flows, and module contracts in .NET.
Hosting an MCP Server in ASP.NET Core: MapMcp, Stateless Mode, and Production Config
Host an MCP server in ASP.NET Core with MapMcp, stateless HTTP transport, CORS, AllowedHosts, health checks, and production configuration guidance today.
DDD and Bounded Contexts in a Modular Monolith with C#: A Practical Guide
Apply Domain-Driven Design bounded contexts to your modular monolith in C#. Learn how each module maps to a bounded context, with practical .NET code examples.
The GitHub Copilot CLI Permission Model: What It Can and Can't Touch
GitHub Copilot CLI permissions explained: trusted directories, allow and deny flags, sandboxing, hooks, URL access, secret redaction, and safe agent workflows.
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