Microsoft Agent Framework Advances to Production-Ready Runtime

UpdatedAugust 4, 2026

The AI agent story is mostly not an AI story. That's the uncomfortable, useful takeaway from Build 2026, where Microsoft put its Agent Harness and Foundry Hosted Agents into General Availability — a real production runtime, not another experimental SDK. Per recent research on Claude Code v2.1.88, roughly 98.4% of an agent system is harness infrastructure: permissions, context management, sandboxing, tool routing, recovery. Only 1.6% is the model making decisions. Microsoft just shipped that 98.4% as a supported product. That's the announcement worth understanding.

This is an excerpt. Read the full post at otf-kit.dev/blog/microsoft-agent-framework-production — full-stack kits your AI coding agent can actually ship to production. Browse the kits →

#ai-tools #agents #backend

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