Programmatic Tool Invocation (PTC) and Dynamic Workflow Engines: An In-depth Analysis of the Architecture Evolution and Practices of Large Model Tool Invocation

On September 7, 2026, Rare Earth掘金 published an in-depth report on programmatic tool invocation (PTC) and dynamic workflow engines. The article pointed out that with the improvement of large model capabilities, its tool invocation architecture is undergoing significant evolution. By introducing PTC technology, large models can invoke external tools more flexibly; at the same time, the integration of dynamic workflow engines makes the processing of complex tasks more automated and intelligent. This progress marks a shift of large models from being single-conversation assistants to intelligent agents capable of independently performing complex tasks, providing new architectural practices for building efficient and scalable large model applications.