AI Agents & Tool Use · Lesson 1
What tool use is
Tool use lets the model call your functions instead of hallucinating an answer. We cover JSON Schema, the call loop, and Claude / OpenAI / Gemini differences.
Practical exercise
What to do after this lesson
Describe three tools (get_weather, search_docs, send_email) as JSON Schema. For each, write a 1–2 sentence description that explicitly states WHEN the model should call it. Mark mandatory fields via required.
Ready-to-use prompt
Template for this lesson
Copy and adapt to your context. Text in angle brackets should be replaced.
I'm designing a tool set for an AI agent. Domain: <…> List of actions the agent should support: <…> For each action, propose a tool as JSON Schema: name (snake_case), a description with an explicit calling condition, typed parameters, required. State which actions should NOT be tools.