We're building increasingly sophisticated AI applications, but there's a problem: our language models are brilliant at reasoning but terrible at taking action in the real world. They can't fetch data from APIs, execute code, or interact with external systems. That's where tool use in AI agents becomes game-changing. Tool use allows AI agents to extend their capabilities beyond text generation by calling functions, APIs, and external services. Instead of just generating responses, agents can now retrieve real-time data, perform calculations, send emails, or interact with databases. This transforms static chatbots into dynamic, action-oriented assistants.…