đ Mission Agent Possible: Your Chance to Build, Solve, and Win at Microsoft Ignite 2025!
đ Whatâs Mission Agent Possible? Itâs a contest designed for developers who love building intelligent solutions. Your mission: Create an AI Agent Solve a simulated crisis Showcase your skills to the world And yesâthere are prizes! Top prizes like an Xbox and hundreds of dollars in Microsoft Store credit are reserved for in-person attendees. Global participants can still win recognition and a chance to be featured on the Model Mondays podcast. đ Contest details: https://aka.ms/ignite25/mission-agent đ§ How Do You Choose the Right AI Model? Model selection is critical for building an effective agent. To help you succeed, check out our Model Selection Adventure blog: Learn how to identify the right problem Explore model strengths and trade-offs Test outputs using GitHub Models Playground This guide will give your agent the competitive edge it needs. đ Read more: https://aka.ms/models-blog â Why Join? Showcase your skills to a global audience Learn hands-on techniques for AI agent development Win prizes and earn recognition đ Ready to Accept the Mission? Donât waitâstart preparing now! The contest officially kicks off on November 18 and closes on November 20 (PST): đ https://aka.ms/ignite25/mission-agent đ https://aka.ms/models-blog Follow the conversation: https://aka.ms/ignite25/agent-contest/discord Share your progress on social with #MissionAgentPossible Please read through the eligibility guidance.Demystifying GitHub Copilot Security Controls: easing concerns for organizational adoption
At a recent developer conference, I delivered a session on Legacy Code Rescue using GitHub Copilot App Modernization. Throughout the day, conversations with developers revealed a clear divide: some have fully embraced Agentic AI in their daily coding, while others remain cautious. Often, this hesitation isn't due to reluctance but stems from organizational concerns around security and regulatory compliance. Having witnessed similar patterns during past technology shifts, I understand how these barriers can slow adoption. In this blog, I'll demystify the most common security concerns about GitHub Copilot and explain how its built-in features address them, empowering organizations to confidently modernize their development workflows. GitHub Copilot Model Training A common question I received at the conference was whether GitHub uses your code as training data for GitHub Copilot. I always direct customers to the GitHub Copilot Trust Center for clarity, but the answer is straightforward: âNo. GitHub uses neither Copilot Business nor Enterprise data to train the GitHub model.â Notice this restriction also applies to third-party models as well (e.g. Anthropic, Google). GitHub Copilot Intellectual Property indemnification policy A frequent concern I hear is, since GitHub Copilotâs underlying models are trained on sources that include public code, it might simply âcopy and pasteâ code from those sources. Letâs clarify how this actually works: Does GitHub Copilot âcopy/pasteâ? âThe AI models that create Copilotâs suggestions may be trained on public code, but do not contain any code. When they generate a suggestion, they are not âcopying and pastingâ from any codebase.â To provide an additional layer of protection, GitHub Copilot includes a âduplicate detection filterâ. This feature helps prevent suggestions that closely match public code from being surfaced. (Note: This duplicate detection currently does not apply to the Copilot coding agent.) More importantly, customers are protected by an Intellectual Property indemnification policy. This means that if you receive an unmodified suggestion from GitHub Copilot and face a copyright claim as a result, Microsoft will defend you in court. GitHub Copilot Data Retention Another frequent question I hear concerns GitHub Copilotâs data retention policies. For organizations on GitHub Copilot Business and Enterprise plans, retention practices depend on how and where the service is accessed from: Access through IDE for Chat and Code Completions: Prompts and Suggestions: Not retained. User Engagement Data: Kept for two years. Feedback Data: Stored for as long as needed for its intended purpose. Other GitHub Copilot access and use: Prompts and Suggestions: Retained for 28 days. User Engagement Data: Kept for two years. Feedback Data: Stored for as long as needed for its intended purpose. For Copilot Coding Agent, session logs are retained for the life of the account in order to provide the service. Excluding content from GitHub Copilot To prevent GitHub Copilot from indexing sensitive files, you can configure content exclusions at the repository or organization level. In VS Code, use the .copilotignore file to exclude files client-side. Note that files listed in .gitignore are not indexed by default but may still be referenced if open or explicitly referenced (unless theyâre excluded through .copilotignore or content exclusions). The life cycle of a GitHub Copilot code suggestion Here are the key protections at each stage of the life cycle of a GitHub Copilot code suggestion: In the IDE: Content exclusions prevent files, folders, or patterns from being included. GitHub proxy (pre-model safety): Prompts go through a GitHub proxy hosted in Microsoft Azure for pre-inference checks: screening for toxic or inappropriate language, relevance, and hacking attempts/jailbreak-style prompts before reaching the model. Model response: With the public code filter enabled, some suggestions are suppressed. The vulnerability protection feature blocks insecure coding patterns like hardcoded credentials or SQL injections in real time. Disable access to GitHub Copilot Free Due to the varying policies associated with GitHub Copilot Free, it is crucial for organizations to ensure it is disabled both in the IDE and on GitHub.com. Since not all IDEs currently offer a built-in option to disable Copilot Free, the most reliable method to prevent both accidental and intentional access is to implement firewall rule changes, as outlined in the official documentation. Agent Mode Allow List Accidental file system deletion by Agentic AI assistants can happen. With GitHub Copilot agent mode, the "Terminal auto approveâ setting in VS Code can be used to prevent this. This setting can be managed centrally using a VS Code policy. MCP registry Organizations often want to restrict access to allow only trusted MCP servers. GitHub now offers an MCP registry feature for this purpose. This feature isnât available in all IDEs and clients yet, but it's being developed. Compliance Certifications The GitHub Copilot Trust Center page lists GitHub Copilot's broad compliance credentials, surpassing many competitors in financial, security, privacy, cloud, and industry coverage. SOC 1 Type 2: Assurance over internal controls for financial reporting. SOC 2 Type 2: In-depth report covering Security, Availability, Processing Integrity, Confidentiality, and Privacy over time. SOC 3: General-use version of SOC 2 with broad executive-level assurance. ISO/IECâŻ27001:2013: Certification for a formal Information Security Management System (ISMS), based on risk management controls. CSA STAR Level 2: Includes a third-party attestation combining ISOâŻ27001 or SOC 2 with additional cloud control matrix (CCM) requirements. TISAX: Trusted Information Security Assessment Exchange, covering automotive-sector security standards. In summary, while the adoption of AI tools like GitHub Copilot in software development can raise important questions around security, privacy, and compliance, itâs clear that existing safeguards in place help address these concerns. By understanding the safeguards, configurable controls, and robust compliance certifications offered, organizations and developers alike can feel more confident in embracing GitHub Copilot to accelerate innovation while maintaining trust and peace of mind.Announcing Public Preview: AI Toolkit for GitHub Copilot Prompt-First Agent Development
This week at GitHub Universe, weâre announcing the Public Preview of the GitHub Copilot prompt-first agent development in the AI Toolkit for Visual Studio Code. With this release, building powerful AI agents is now simpler and faster - no need to wrestle with complex frameworks or orchestrators. Just start with natural language prompts and let GitHub Copilot guide you from concept to working agent code. Accelerate Agent Development in VS Code The AI Toolkit embeds agent development workflows directly into Visual Studio Code and GitHub Copilot, enabling you to transform ideas into production-ready agents within minutes. This unified experience empowers developers and product teams to: Select the best model for your agent scenario Build and orchestrate agents using Microsoft Agent Framework Trace agent behaviors Evaluate agent response quality Select the best model for your scenario Models are the foundation for building powerful agents. Using the AI Toolkit, you can already explore and experiment with a wide range of local and remote models. Copilot now recommends models tailored to your agentâs needs, helping you make informed choices quickly. Build and orchestrate agents Whether youâre creating a single agent or designing a multi-agent workflow, Copilot leverages the latest Microsoft Agent Framework to generate robust agent code. You can initiate agent creation with simple prompts and visualize workflows for greater clarity and control. Create a single agent using Copilot Create a multi-agent workflow using Copilot and visualize workflow execution Trace agent behaviors As agents become more sophisticated, understanding their actions is crucial. The AI Toolkit enables tracing via Copilot, collecting local traces and displaying detailed agent calls, all within VS Code. Evaluate agent response quality Copilot guides you through structured evaluation, recommending metrics and generating test datasets. Integrate evaluations into your CI/CD pipeline for continuous quality assurance and confident deployments. Get started and share feedback This release marks a significant step toward making AI agent development easier and more accessible in Visual Studio Code. Try out theâŻAI Toolkit for Visual Studio Code, share your thoughts, andâŻfile issues and suggest features on our GitHub repo. Thank you for being a part of this journey with us!Study Buddy: Learning Data Science and Machine Learning with an AI Sidekick
If you've ever wished for a friendly companion to guide you through the world of data science and machine learning, you're not alone. As part of the "For Beginners" curriculum, I recently built a Study Buddy Agent, an AI-powered assistant designed to help learners explore data science interactively, intuitively, and joyfully. Why a Study Buddy? Learning something new can be overwhelming, especially when you're navigating complex topics like machine learning, statistics, or Python programming. The Study Buddy Agent is here to change that. It brings the curriculum to life by answering questions, offering explanations, and nudging learners toward deeper understanding, all in a conversational format. Think of it as your AI-powered lab partner: always available, never judgmental, and endlessly curious. Built with chatmodes, Powered by Purpose The agent lives inside a .chatmodes file in the https://github.com/microsoft/Data-Science-For-Beginners/blob/main/.github/chatmodes/study-mode.chatmode.md. This file defines how the agent behaves, what tone it uses, and how it interacts with learners. I designed it to be friendly, encouraging, and beginner-firstâjust like the curriculum itself. Itâs not just about answering questions. The Study Buddy is trained to: Reinforce key concepts from the curriculum Offer hints and nudges when learners get stuck Encourage exploration and experimentation Celebrate progress and milestones Whatâs Under the Hood? The agent uses GitHub Copilot's chatmode, which allows developers to define custom behaviors for AI agents. By aligning the agentâs responses with the curriculumâs learning objectives, we ensure that learners stay on track while enjoying the flexibility of conversational learning. How You Can Use It YouTube Video here: Study Buddy - Data Science AI Sidekick Clone the repo: Head to the https://github.com/microsoft/Data-Science-For-Beginners and clone it locally or use Codespaces. Open the GitHub Copilot Chat, and select Study Buddy: This will activate the Study Buddy. Start chatting: Ask questions, explore topics, and let the agent guide you. Whatâs Next? This is just the beginning. Iâm exploring ways to: Expand the agent to other beginner curriculums (Web Dev, AI, IoT) Integrate feedback loops so learners can shape the agentâs evolution Final Thoughts In my role, I believe learning should be inclusive, empowering, and fun. The Study Buddy Agent is a small step toward that vision, a way to make data science feel less like a mountain and more like a hike with a good friend. Try it out, share your feedback, and letâs keep building tools that make learning magical. Join us on Discord to share your feedback.Introducing the Microsoft Agent Framework
Introducing the Microsoft Agent Framework: A Unified Foundation for AI Agents and Workflows The landscape of AI development is evolving rapidly, and Microsoft is at the forefront with the release of the Microsoft Agent Framework an open-source SDK designed to empower developers to build intelligent, multi-agent systems with ease and precision. Whether you're working in .NET or Python, this framework offers a unified, extensible foundation that merges the best of Semantic Kernel and AutoGen, while introducing powerful new capabilities for agent orchestration and workflow design. Introducing Microsoft Agent Framework: The Open-Source Engine for Agentic AI Apps | Azure AI Foundry Blog Introducing Microsoft Agent Framework | Microsoft Azure Blog Why Another Agent Framework? Both Semantic Kernel and AutoGen have pioneered agentic development, Semantic Kernel with its enterprise-grade features and AutoGen with its research-driven abstractions. The Microsoft Agent Framework is the next generation of both, built by the same teams to unify their strengths: AutoGenâs simplicity in multi-agent orchestration. Semantic Kernelâs robustness in thread-based state management, telemetry, and type safety. New capabilities like graph-based workflows, checkpointing, and human-in-the-loop support This convergence means developers no longer have to choose between experimentation and production. The Agent Framework is designed to scale from single-agent prototypes to complex, enterprise-ready systems Core Capabilities AI Agents AI agents are autonomous entities powered by LLMs that can process user inputs, make decisions, call tools and MCP servers, and generate responses. They support providers like Azure OpenAI, OpenAI, and Azure AI, and can be enhanced with: Agent threads for state management. Context providers for memory. Middleware for action interception. MCP clients for tool integration Use cases include customer support, education, code generation, research assistance, and moreâespecially where tasks are dynamic and underspecified. Workflows Workflows are graph-based orchestrations that connect multiple agents and functions to perform complex, multi-step tasks. They support: Type-based routing Conditional logic Checkpointing Human-in-the-loop interactions Multi-agent orchestration patterns (sequential, concurrent, hand-off, Magentic) Workflows are ideal for structured, long-running processes that require reliability and modularity. Developer Experience The Agent Framework is designed to be intuitive and powerful: Installation: Python: pip install agent-framework .NET: dotnet add package Microsoft.Agents.AI Integration: Works with Foundry SDK, MCP SDK, A2A SDK, and M365 Copilot Agents Samples and Manifests: Explore declarative agent manifests and code samples Learning Resources: Microsoft Learn modules AI Agents for Beginners AI Show demos Azure AI Foundry Discord community Migration and Compatibility If you're currently using Semantic Kernel or AutoGen, migration guides are available to help you transition smoothly. The framework is designed to be backward-compatible where possible, and future updates will continue to support community contributions via the GitHub repository. Important Considerations The Agent Framework is in public preview. Feedback and issues are welcome on the GitHub repository. When integrating with third-party servers or agents, review data sharing practices and compliance boundaries carefully. The Microsoft Agent Framework marks a pivotal moment in AI development, bringing together research innovation and enterprise readiness into a single, open-source foundation. Whether you're building your first agent or orchestrating a fleet of them, this framework gives you the tools to do it safely, scalably, and intelligently. Ready to get started? Download the SDK, explore the documentation, and join the community shaping the future of AI agents.From Cloud to Chip: Building Smarter AI at the Edge with Windows AI PCs
As AI engineers, weâve spent years optimizing models for the cloud, scaling inference, wrangling latency, and chasing compute across clusters. But the frontier is shifting. With the rise of Windows AI PCs and powerful local accelerators, the edge is no longer a constraint itâs now a canvas. Whether you're deploying vision models to industrial cameras, optimizing speech interfaces for offline assistants, or building privacy-preserving apps for healthcare, Edge AI is where real-world intelligence meets real-time performance. Why Edge AI, Why Now? Edge AI isnât just about running models locally, itâs about rethinking the entire lifecycle: - Latency: Decisions in milliseconds, not round-trips to the cloud. - Privacy: Sensitive data stays on-device, enabling HIPAA/GDPR compliance. - Resilience: Offline-first apps that donât break when the network does. - Cost: Reduced cloud compute and bandwidth overhead. With Windows AI PCs powered by Intel and Qualcomm NPUs and tools like ONNX Runtime, DirectML, and Olive, developers can now optimize and deploy models with unprecedented efficiency. What Youâll Learn in Edge AI for Beginners The Edge AI for Beginners curriculum is a hands-on, open-source guide designed for engineers ready to move from theory to deployment. Multi-Language Support This content is available in over 48 languages, so you can read and study in your native language. What You'll Master This course takes you from fundamental concepts to production-ready implementations, covering: Small Language Models (SLMs) optimized for edge deployment Hardware-aware optimization across diverse platforms Real-time inference with privacy-preserving capabilities Production deployment strategies for enterprise applications Why EdgeAI Matters Edge AI represents a paradigm shift that addresses critical modern challenges: Privacy & Security: Process sensitive data locally without cloud exposure Real-time Performance: Eliminate network latency for time-critical applications Cost Efficiency: Reduce bandwidth and cloud computing expenses Resilient Operations: Maintain functionality during network outages Regulatory Compliance: Meet data sovereignty requirements Edge AI Edge AI refers to running AI algorithms and language models locally on hardware, close to where data is generated without relying on cloud resources for inference. It reduces latency, enhances privacy, and enables real-time decision-making. Core Principles: On-device inference: AI models run on edge devices (phones, routers, microcontrollers, industrial PCs) Offline capability: Functions without persistent internet connectivity Low latency: Immediate responses suited for real-time systems Data sovereignty: Keeps sensitive data local, improving security and compliance Small Language Models (SLMs) SLMs like Phi-4, Mistral-7B, Qwen and Gemma are optimized versions of larger LLMs, trained or distilled for: Reduced memory footprint: Efficient use of limited edge device memory Lower compute demand: Optimized for CPU and edge GPU performance Faster startup times: Quick initialization for responsive applications They unlock powerful NLP capabilities while meeting the constraints of: Embedded systems: IoT devices and industrial controllers Mobile devices: Smartphones and tablets with offline capabilities IoT Devices: Sensors and smart devices with limited resources Edge servers: Local processing units with limited GPU resources Personal Computers: Desktop and laptop deployment scenarios Course Modules & Navigation Course duration. 10 hours of content Module Topic Focus Area Key Content Level Duration đ 00 Introduction to EdgeAI Foundation & Context EdgeAI Overview ⢠Industry Applications ⢠SLM Introduction ⢠Learning Objectives Beginner 1-2 hrs đ 01 EdgeAI Fundamentals Cloud vs Edge AI comparison EdgeAI Fundamentals ⢠Real World Case Studies ⢠Implementation Guide ⢠Edge Deployment Beginner 3-4 hrs đ§ 02 SLM Model Foundations Model families & architecture Phi Family ⢠Qwen Family ⢠Gemma Family ⢠BitNET ⢠ΟModel ⢠Phi-Silica Beginner 4-5 hrs đ 03 SLM Deployment Practice Local & cloud deployment Advanced Learning ⢠Local Environment ⢠Cloud Deployment Intermediate 4-5 hrs âď¸ 04 Model Optimization Toolkit Cross-platform optimization Introduction ⢠Llama.cpp ⢠Microsoft Olive ⢠OpenVINO ⢠Apple MLX ⢠Workflow Synthesis Intermediate 5-6 hrs đ§ 05 SLMOps Production Production operations SLMOps Introduction ⢠Model Distillation ⢠Fine-tuning ⢠Production Deployment Advanced 5-6 hrs đ¤ 06 AI Agents & Function Calling Agent frameworks & MCP Agent Introduction ⢠Function Calling ⢠Model Context Protocol Advanced 4-5 hrs đť 07 Platform Implementation Cross-platform samples AI Toolkit ⢠Foundry Local ⢠Windows Development Advanced 3-4 hrs đ 08 Foundry Local Toolkit Production-ready samples Sample applications (see details below) Expert 8-10 hrs Each module includes Jupyter notebooks, code samples, and deployment walkthroughs, perfect for engineers who learn by doing. Developer Highlights - đ§ Olive: Microsoft's optimization toolchain for quantization, pruning, and acceleration. - 𧊠ONNX Runtime: Cross-platform inference engine with support for CPU, GPU, and NPU. - đŽ DirectML: GPU-accelerated ML API for Windows, ideal for gaming and real-time apps. - đĽď¸ Windows AI PCs: Devices with built-in NPUs for low-power, high-performance inference. Local AI: Beyond the Edge Local AI isnât just about inference, itâs about autonomy. Imagine agents that: - Learn from local context - Adapt to user behavior - Respect privacy by design With tools like Agent Framework, Azure AI Foundry and Windows Copilot Studio, and Foundry Local developers can orchestrate local agents that blend LLMs, sensors, and user preferences, all without cloud dependency. Try It Yourself Ready to get started? Clone the Edge AI for Beginners GitHub repo, run the notebooks, and deploy your first model to a Windows AI PC or IoT devices Whether you're building smart kiosks, offline assistants, or industrial monitors, this curriculum gives you the scaffolding to go from prototype to production.Essential Microsoft Resources for MVPs & the Tech Community from the AI Tour
Unlock the power of Microsoft AI with redeliverable technical presentations, hands-on workshops, and open-source curriculum from the Microsoft AI Tour! Whether youâre a Microsoft MVP, Developer, or IT Professional, these expertly crafted resources empower you to teach, train, and lead AI adoption in your community. Explore top breakout sessions covering GitHub Copilot, Azure AI, Generative AI, and security best practicesâdesigned to simplify AI integration and accelerate digital transformation. Dive into interactive workshops that provide real-world applications of AI technologies. Take it a step further with Microsoftâs Open-Source AI Curriculum, offering beginner-friendly courses on AI, Machine Learning, Data Science, Cybersecurity, and GitHub Copilotâperfect for upskilling teams and fostering innovation. Donât just learnâlead. Access these resources, host impactful training sessions, and drive AI adoption in your organization. Start sharing today! Explore now: Microsoft AI Tour Resources.How to Master GitHub Copilot: Build, Prompt, Deploy Smarter
Mastering GitHub Copilot: Build, Prompt, Deploy Smarter is a free, hands-on workshop designed to help developers go beyond autocomplete and unlock the true power of AI-assisted coding. Instead of toy examples, this course walks you through real-world software engineering challenges: messy codebases, multi-language projects, cloud deployments, and legacy system upgrades. Youâll learn practical skills like prompt engineering, advanced Copilot features, and AI pair programming techniques that make you faster, sharper, and more creative. Whether youâre a junior developer or a seasoned architect, mastering GitHub Copilot will help you: Reduce cognitive load and focus on system design Accelerate onboarding for new engineers Write cleaner, more consistent code Automate repetitive tasks to free up time for innovation AI coding tools like GitHub Copilot are no longer optionalâtheyâre essential. This workshop gives you the skills to collaborate with Copilot effectively and stay competitive in the age of AI-powered development.Use Copilot and MCP to query Microsoft Learn Docs
Are you ready to take your Azure development workflow to the next level? In this post, weâll walk through how to use GitHub Copilot in Agent Modeâpaired with MCP (Model Context Protocol) serversâto get trusted, grounded answers from Microsoft Learn Docs, right inside your coding workspace. Whether youâre tired of switching tabs to search documentation or want to ensure your AI assistantâs answers are always accurate, this guide will show you how to streamline your workflow and boost your productivity.One MCP Server, Two Transports: STDIO and HTTP
Let's think about a situation for using MCP servers. Most MCP servers run on a local machine â either directly or in a container. But with other integration scenarios like using Copilot Studio, enterprise-wide MCP servers or need more secure environments, those MCP server should run remotely through HTTP. As long as the core logic lives in a shared layer, wrapping it in a console (STDIO) or web (HTTP) host is straightforward. However, maintaining two hosts can duplicate code. What if a single MCP server supports both STDIO and HTTP, controlled by a simple switch? It will be reducing significant amount of management overhead. This post shows how to build a single MCP server that supports both transports, selected at runtime with a --http switch, using the .NET builder pattern. .NET Builder Pattern A .NET console app starts the builder pattern using Host.CreateApplicationBuilder(args) . var builder = Host.CreateApplicationBuilder(args); The builder instance is the type of HostApplicationBuilder implementing the IHostApplicationBuilder interface. On the other hand, an ASP.NET web app starts the builder pattern using WebApplication.CreateBuilder(args) . var builder = WebApplication.CreateBuilder(args); This builder instance is the type of WebApplicationBuilder also implementing the IHostApplicationBuilder interface. Now, both builder instances have IHostApplicationBuilder in common, and this is the key of this post today. If we decide the hosting mode before creating the builder instance, the server can run as either STDIO or HTTP. The --http Switch as an Argument As you can see, both Host.CreateApplicationBuilder(args) and WebApplication.CreateBuilder(args) take the list of arguments that are passed from the command-line. Therefore, before initializing the builder instance, we can identify the server type. Let's use a --http switch as the selector. Then pass --http when running the server. dotnet run --project MyMcpServer -- --http Then, before creating the builder instance, check whether the switch is present. It looks for the environment variables first, then checks the arguments passed. public static bool UseStreamableHttp(IDictionary env, string[] args) { var useHttp = env.Contains("UseHttp") && bool.TryParse(env["UseHttp"]?.ToString()?.ToLowerInvariant(), out var result) && result; if (args.Length == 0) { return useHttp; } useHttp = args.Contains("--http", StringComparer.InvariantCultureIgnoreCase); return useHttp; } Here's the usage: var useStreamableHttp = UseStreamableHttp(Environment.GetEnvironmentVariables(), args); We've identified whether to use HTTP or not. Therefore, the builder instance is built in this way: IHostApplicationBuilder builder = useStreamableHttp ? WebApplication.CreateBuilder(args) : Host.CreateApplicationBuilder(args); With this builder instance, we can add more dependencies specific to web app or console app depending on the scenario. The Transport Type Let's add the MCP server to the builder instance. var mcpServerBuilder = builder.Services.AddMcpServer() .WithPromptsFromAssembly() .WithResourcesFromAssembly() .WithToolsFromAssembly(); We havenât told mcpServerBuilder which transport to use yet. Use useStreamableHttp to select the transport. if (useStreamableHttp) { mcpServerBuilder.WithHttpTransport(o => o.Stateless = true); } else { mcpServerBuilder.WithStdioServerTransport(); } Type Casting to Run Server While configuring an ASP.NET web app, middlewares are added. The HTTP host also needs middleware, and the builder must be cast. After the builder instance is built, the webApp instance adds middleware including the endpoint mapping. IHost app; if (useStreamableHttp) { var webApp = (builder as WebApplicationBuilder)!.Build(); webApp.UseHttpsRedirection(); webApp.MapMcp("/mcp"); app = webApp; } else { var consoleApp = (builder as HostApplicationBuilder)!.Build(); app = consoleApp; } Note that WebApplication implements IHost, so you can assign it to an IHost variable. The console host built from HostApplicationBuilder is already an IHost. Use this app instance to run the MCP server. await app.RunAsync(); That's it! Now you can run the MCP server with the STDIO transport or the HTTP transport by providing a single switch, --http . Sample apps Sample apps are available for you to check out. Visit the MCP Samples in .NET repository, and you'll find MCP server apps. All server apps in the repo support both STDIO and HTTP via the switch. More resources If you'd like to learn more about MCP in .NET, here are some additional resources worth exploring: Let's Learn MCP MCP Workshop in .NET MCP Samples in .NET MCP Samples MCP for Beginners
