Vercel AI SDK
by Vercel
Provider-agnostic TypeScript toolkit for AI apps and agents
The AI SDK from Vercel is an open-source TypeScript library for building AI applications and agents. It gives one API for text generation, structured output, streaming, and tool calling across many model providers, plus an agent loop, an MCP client, and UI hooks for React, Svelte, Vue, and other frameworks.
Key features
- Unified API across model providers
- Streaming and structured output
- Tool calling and agent loop (ToolLoopAgent)
- MCP client
- UI hooks such as useChat for React, Svelte, and Vue
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