I’ll research the latest developments across the agentic coding landscape for March 2026. Let me run multiple searches simultaneously.

Now let me do a few final targeted searches on specific items I need more detail on — particularly the LiteLLM supply-chain incident and the Claude Sonnet 4.6 launch.

I now have comprehensive research across all major areas. Let me compile the intelligence brief.

Agentic Coding: Monthly Intelligence Brief — March 2026

The shift from session-based prompting to sustained, event-driven agent orchestration became concrete this month — across tooling, models, infrastructure, and supply chain security.