TanStack AI Adds Subagents for Streaming Multi-Agent UIs

Melvin Vivas · X video post · 2026-09-24 · Open on X

Topics: AI Agents, Tool Use & MCP, AI Dev Tools & Productivity · Level: intermediate

Summary

The creator recommends TanStack AI now that it supports subagents. You define agents once and pass them to chat(), and each agent streams its own card in the UI. A router sends each message to the right agents, either in parallel or in sequence.

Key points

• TanStack AI now supports subagents.
• Define agents once, then pass them to chat().
• Each subagent streams its own UI card, so you can see multi-agent output separately.
• Messages are routed to the right agents, which can run in parallel or in order.
• The creator thinks the framework is worth evaluating for agentic web apps.

Resources mentioned

• TanStack AI · tool · github.com · free
  A TanStack library for building AI chat and agent features into apps, now with subagent support.

Try this

• Try TanStack AI's subagents feature: define agents and pass them to chat().
• Build a chat UI where several subagents each stream their output into their own card.