handle_function_call
Domain: Agent Architecture
Motivation
This step takes a single tool call from the model, runs the actual tool function, and returns the result back to the conversation.
Concrete Example
The model calls read_file. handle_function_call opens the file, reads the content, and hands the text back as a tool result message.
Analogy
Like a librarian fetching a book you requested: you ask, they go get it, and hand it to you.