Agentic tool use in Aerie workflows

A key defining feature of agents is the ability to use tools to interact with its surrounding environment. Interaction can include gathering information from external sources or triggering actions. With respect to software agents, the environment does not necessarily refer to a physical environment or the entire world. Rather, it often refers to the host computer or a set of remote services like reservation systems, knowledge bases, e-commerce platforms. An agent uses some kind of program logic to automatically decide which tools to use and how to call them. In the case of AI agents, we use language models as the decision mechanism. In workflows, we can expose tools to language models through Chat and Structured nodes. Agent nodes supply a set of tools, along with other parameters that are relevant to the specific subtask. In this example, we will create simple weather agents using live weather services over the Internet. Tool Providers AI applications can implement and expose tools di