This node creates an agent based on (Azure) OpenAI chat models that support function calling (e.g. the 0613 models) and can be primed with a custom system message. The system message plays an essential role in defining the behavior of the agent and how it interacts with users and tools. Best practice is to alter the system message before tampering with model settings because the message has the most significant impact on the behavior of the agent.
For Azure: Make sure to use the correct API, since function calling is only available since API version '2023-07-01-preview'. For more information, check the Microsoft Documentation
In general an agent is an LLM that is configured to, if necessary, dynamically pick a tool from a set of tools to best answer the user prompts.
Note that these agents do not support tools with whitespaces in their names.