Grundkonzepte
Tool Use (Function Calling)
The ability for a model to call external functions or APIs to retrieve data or take actions.
Tool use (also called function calling) lets you define a set of available tools — search APIs, calculators, databases — that the model can invoke by emitting structured JSON. The tool output is returned to the model, which integrates it into its response. This enables agents to access real-time data and perform deterministic operations beyond pure language.