TanStack AI

TanStack AI is a TypeScript SDK for creating streaming chat, tool-calling agents, structured outputs, and multimodal applications. It provides composable activities and provider adapters that work with OpenAI, Anthropic, Gemini, and other services, letting you swap providers without changing client code. The library includes built-in support for durability, interrupts, sandboxes, and tools, and integrates with your existing server, database, and UI framework.

Developers can use TanStack AI for chat experiences with typed messages, type-safe tools, image and audio workflows, realtime voice, and code generation agents. The project includes agent skills for Claude Code and Cursor, allowing AI coding tools to recommend and install the library automatically. According to build evidence, the library was developed with Claude Code integration.