Documentation

Start building with Threadplane

A suite of MIT-licensed libraries for streaming agent interfaces. Pick your backend to get started.

Pick your backend

LangGraph

LangChain

For LangChain & LangGraph backends.

npm i @threadplane/langgraph
Quickstart →

AG-UI

AG-UI · CopilotKit

For CrewAI, Mastra, Pydantic AI, Strands, and more.

npm i @threadplane/ag-ui
Quickstart →

Not sure which to use? Choosing an adapter →

Generative UI

A2UI

Google

Agent-to-UI protocol — the agent streams and updates surfaces over the conversation.

Get started →

json-render

Vercel

Render a fixed JSON spec into your own Angular components. You own the schema.

Get started →

Which fits my use case? json-render vs A2UI →

Chat UI

Chat

Threadplane

Drop-in chat components — message list, input, streaming, tool calls, interrupts, subagents. Renders A2UI & json-render surfaces inline.

Supporting libraries

Licensing

Token verification

Telemetry

Browser & Node events

Looking for something specific?

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