Thesys

LangChain and LangGraph integration primitives for streaming OpenUI generative interfaces

Headless React primitives for AI chat — state management, streaming adapters for OpenAI, Vercel AI SDK, and AG-UI, message format converters, and thread management for OpenUI generative UI apps

OpenUI Lang tool renderers and instruction wiring for assistant-ui

Framework-agnostic core for OpenUI Lang: parser, prompt generation, validation, and type definitions

Define component libraries, generate LLM system prompts, and render streaming OpenUI Lang output in Svelte 5 — the Svelte runtime for OpenUI generative UI