Tool Calling

Let the AI model call functions and use external tools with the multi-step tool loop.

Popularagentsintermediate

Install this lab

pnpm dlx shadcn@latest add https://ai-sdk-patterns.vercel.app/r/tool-calling

Build weather applications that call real weather APIs, parse data, and present forecasts in natural language.

Create smart financial tools that perform complex calculations, market analysis, and investment recommendations.

Stream text responses from AI models in real-time using streamText and the useChat hook.

Build an agent that orchestrates multiple tool calls in sequence, using stopWhen: stepCountIs() and automatic tool result forwarding.