Architecture Development Notes

Sep 11, 2026 · Artificial Intelligence

Control Inversion in Agent Tool Calling: Orchestration Loops Move Into Model-Generated Code

This article analyzes the shift from host-controlled to model-generated orchestration loops in AI agent tool calling, comparing Anthropic's API-level and LangChain's middleware approaches, examining cost control primitives, container lifecycle, debugging challenges, BFCL v4 evaluation data, and practical adoption criteria for programmatic tool calling.