Function Calling

Function calling is a mechanism that allows a language model to request execution of external functions or tools by outputting structured arguments. The system then runs those functions and feeds the results back into the model. For engineers integrating AI into products, function calling turns natural language into actions, enabling Ai Messages that can trigger workflows, fetch real-time data, or perform calculations while remaining user-friendly. Function calling is a mechanism where language models output structured arguments that trigger external functions or tools. The system executes those functions and feeds results back into the model for further reasoning. For engineers, function calling lets Ai Messages initiate concrete actions, fetch real-time data, and integrate tightly with product logic.