Function Calling and API Integration
Master how to prompt LLMs to call external functions or APIs, enabling them to interact with real-world systems.
Call External Tools
LLMs are powerful, but they primarily live in a text world. What if they need real-world information or need to perform actions?
Function calling lets LLMs interact with external tools and APIs! This bridges the gap between language and action, allowing AI to:
- Get current information (weather, stock prices)
- Perform actions (send emails, book appointments)
- Connect to databases or custom tools
It unlocks new possibilities for AI systems.
LLM's Role: Suggesting Calls
When you enable function calling, you provide the LLM with descriptions of available tools (functions).
Instead of directly answering, the LLM might decide that a tool can help. It then outputs a structured "suggestion" for a function call, including the function's name and its arguments.
Important: The LLM doesn't execute the function itself. It just tells your application what function to call and with what inputs.
All lessons in this course
- Function Calling and API Integration
- Multi-Agent Prompting Systems
- Custom Tools and Plugins for LLMs