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The Shift: Chat → Action

Tools are what transform AI from something you talk to into something that works for you. Without tools, AI can only draw from what it learned during training. With tools, it can access your actual systems—your calendar, your CRM, your email, your databases—and take action based on what it finds. The model itself doesn’t change. It’s still predicting the best next response. But now “use a tool” is one of its options.

How AI Decides Which Tools to Use

Here’s what makes tool use remarkable: AI models are surprisingly good at figuring out which tools to use and when. When you give an AI access to multiple tools, it doesn’t just randomly pick one. It looks at your request, considers the available tools, and makes an educated guess about what to do next. Ask it to “prepare me for my next meeting” and it will:
  1. Recognize it needs calendar information
  2. Use the calendar tool to find your next meeting
  3. See who’s attending
  4. Use the CRM tool to pull up information about those people
  5. Synthesize everything into a helpful briefing
The model is still just predicting the next best action. But now “use the calendar tool” or “query the CRM” are valid next steps, not just words. It keeps going—tool use, response, tool use, response—until it has everything it needs to give you a complete answer.
AI using tools in a chat conversation
Models can chain tools togetherThe real power isn’t just using one tool. It’s that AI can use multiple tools in sequence, taking the output from one and feeding it into the next, all to accomplish your goal.

Make the AI work the way you do

Tools turn your AI from a chatbot into an assistant. However, that system still has no idea how you want to work. Without guidance, every interaction with your agent may yield different results and not necessarily the ones you expect. In the next lesson, we’ll cover how to provide instructions to your AI to help it work exactly how you want it to.