← Agent building

Microsoft Agent Framework (Python) 1.21.0 logoMicrosoft Agent Framework (Python) 1.21.0

Microsoft's open-source framework for building agents and multi-agent workflows (Python and .NET). 1.21.0 adds tool-result standing guidance and full-buffer Purview policy evaluation for streamed responses.

Microsoft Agent Framework (Python) 1.21.0 logoMicrosoft Agent Framework (Python) 1.21.0

Agent building Score: provisional Tested: no Released 8 Oct 2026

Verdict: Most relevant for teams in the Microsoft/Azure stack that need policy controls such as Purview. Otherwise this is an incremental release.

Test notes: Not tested: the verdict is based on the linked public release notes only.

Pricing: Open source

Source: github.com · Last checked 15 Oct 2026
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