ms-devui

You can test Microsoft Agent Framework agents locally by launching the DevUI server, which provides a browser-based interactive chat interface for testing agent responses without building a custom UI.

Debugging agent state and tool calls is handled by the DevUI State Inspector and Tool Testing Panel, which provide real-time context visibility and validation for tool calls in a browser-based interface during local development.

Yes, you can view request and response payloads using the DevUI Request/Response Viewer, enabling end-to-end scenario analysis for Microsoft Agent Framework agents directly within your local development environment.

You can configure the local port for the agent testing interface through DevUI's configurable server and deployment options, with the default local testing interface typically accessible at http://localhost:8080.

DevUI works across all development phases, applicable from interactive chat testing to advanced tool visualization and state inspection, satisfying requirements for a comprehensive front-facing dev tool.

The browser-based interface is designed specifically for local testing and debugging of agents, meaning it serves as a development tool rather than a production deployment environment for your Microsoft Agent Framework applications.