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TanStack AI
TanStack AI: TypeScript library for building AI features and agents with provider adapters, durability, and tools.
TanStack AI is a TypeScript library for building AI features and agents. It ships the agent loop, provider adapters, durability, interrupts, sandboxes, and tools, and plugs into the server, database, and UI you already have. It is designed for developers who want to maintain their own stack while building AI applications. The library features AG-UI compliance, typed options for models, unified tool definitions, and complete UI ownership. It supports text, objects, reasoning, speech, transcription, music, realtime voice, images, video, and world models.
TanStack AI at a glance
- Best for: Software engineer
- Runs on: Web, API, CLI
- Pricing: Free
- Released: October 2025
- Category: AI coding tool
- Website: tanstack.com
Key features
- TypeScript library for AI features and agents
- AG-UI compliant protocol
- Typed options for every model
- Unified tool definitions for server and client
- Durability with log-based streaming
- Sandbox and code mode execution
- Memory and compaction integration
- Devtools for action tracking
Use it for
- Build streaming chat applications
- Handle tool calls with user approval workflows
- Generate structured outputs matching custom schemas
- Process speech, transcription, music, and realtime voice
- Generate and stream images, video, and world models
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- Sandcastle — Orchestrates AI coding agents in isolated Docker, Podman, or Vercel sandboxes.
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