Vercel AI SDK overview

Vercel's TypeScript SDK for building AI-powered web applications with streaming UI, tool calling, structured outputs, and multi-step agent workflows. Provides React hooks (useChat, useCompletion) and server actions for seamless frontend-backend AI integration. Supports multiple providers via a unified API (OpenAI, Anthropic, Google, Mistral, Cohere, and community providers). Features include: generateText/streamText for server-side LLM calls, generateObject for structured outputs with Zod schemas, multi-step tool use with maxSteps, middleware for guardrails and logging, and an experimental agent framework (experimental_createMCPClient) for MCP tool server integration. The standard choice for adding AI features to Next.js applications. Pairs with Vercel AI Elements (presentation:ai-elements) for pre-built UI components.