Microsoft Agent Framework

Microsoft Agent Framework is the open-source successor to AutoGen and Semantic Kernel. It combines simple agent abstractions with enterprise features for state, middleware, telemetry, model integrations, and explicit multi-agent workflows.

Key features

• Agents with tool calling and Model Context Protocol support
• Graph-based and functional workflows
• Long-running agent harness with planning, memory, and observability
• Python, .NET, and Go libraries
• Integrations with Microsoft Foundry, Anthropic, Azure OpenAI, OpenAI, and Ollama
• Human-in-the-loop and durable state patterns

It is Microsoft's primary framework for developers building robust agentic applications across the Microsoft and Azure ecosystems.