Announcing: DevUI Agent Inspector for Microsoft Agent Framework

Microsoft Agent Framework adds DevUI Agent Inspector in public preview, a local debugging surface that shows agent runs as a navigable tree of model calls, tool invocations, and intermediate state. Developers can pause, replay, and edit prompts mid-run, swap models without restarting, and inspect the full payload sent to each tool. The inspector reads the same OpenTelemetry traces that Foundry observability consumes, so what you see locally matches what shows up in production dashboards. DevUI runs as a sidecar process on a developer workstation and connects to agents built with the framework in .NET or Python. The preview is aimed at agent developers who currently rely on log scraping and ad-hoc print statements. 

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