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8/4/2026
Microsoft Agent Framework Advances to Production-Ready Runtime

Microsoft Agent Framework Advances to Production-Ready Runtime

Short summary

Microsoft announced General Availability of its Agent Harness and Foundry Hosted Agents at Build 2026, shipping a production-ready agent runtime rather than another experimental SDK. The harness handles function invocation, context compaction, history persistence, tool approval gates, and built-in OpenTelemetry — the ~98% of agent infrastructure that isn't the model. Foundry Hosted Agents offers the same harness as a managed, consumption-billed service with connectors for GitHub Copilot and Claude Agent SDK.

  • •Agent Harness GA: single binary handling function calls, context compaction, approvals, telemetry
  • •Foundry Hosted Agents: managed deployment with consumption-based billing
  • •Integrates with GitHub Copilot and Claude Agent SDK through a unified governance policy plane

Generated with AI, which can make mistakes.

#ai-agents#product-launch#ai-tools#open-source
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