Show HN: Flux0 – Open framework for streaming, multi-agent, LLM agnostic

The open framework for building real-time, AI-powered applications with multi-agent support, session management, and LLM-agnostic integration.

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Flux0 is a powerful framework for building and deploying AI-powered applications. It helps developers manage the complexity of orchestrating AI agents, handling real-time communication, and integrating with LLMs and UIs — all in a unified, scalable way.

Flux0 simplifies:

• Deploying LangGraph, PydanticAI agents, or your own LLM logic.
• Building real-time streaming apps using JSON patch-based event streaming.
• Creating responsive user interfaces with our React toolkit @flux0-ai/react.

Whether you're building a chatbot, agent system, or AI copilot — Flux0 provides the foundation.

Deploy and manage agents using frameworks like LangGraph, PydanticAI, or any custom logic — with no lock-in.

Built-in support for real-time streaming using JSON patches. Perfect for chat UIs, assistants, and continuous agent feedback.

Track, persist, and replay conversations with full context. Built-in session lifecycle management lets you build stateful experiences.

@flux0-ai/react helps you build conversational UIs that handle input, messages, system events, and streaming — with minimal setup.

Extend your app with custom workflows, event logic, or backend modules. Easily adapt Flux0 to your needs.

Building modern AI apps means combining many complex systems: LLM APIs, workflows, conversation state, streaming, and UIs. Flux0 unifies these pieces so you can:

• ✔ Focus on logic, not boilerplate
• ✔ Stream data in real-time by default
• ✔ Switch LLM frameworks or providers freely
• ✔ Use prebuilt UI components
• ✔ Prototype fast and scale cleanly

If you've ever struggled with:

• Coordinating multiple agents across sessions
• Persisting chat state across sessions
• Replaying and resuming conversations
• Handling streaming updates in UI
• Building robust, real-time conversational UIs

Then Flux0 is for you.

• AI Engineers who want a reliable backend for agents and workflows
• Full-Stack Developers building LLM-powered apps end-to-end
• Frontend Engineers who need real-time chat and event UIs
• Prototypers & Researchers testing new AI flows quickly
• Product Teams shipping production-ready AI features

From experiments to production agents, Flux0 gives you the right tools at every stage.

This agent is based on Langchain but you can use any framework of your choice, see examples/langchain_simple

Start the server:

Register the agent in DB (in another window)

Start chatting with your agent at http://localhost:8080/chat

• @flux0-ai/react: React components and hooks for integrating with Flux0 sessions
• flux0-client-python: Python SDK for managing agents and sessions

Visit the full docs at flux0.ai/docs

• Quickstart
• Examples
• API Reference

Flux0 is open source and licensed under the Apache2 License.

Made with ❤️ by the Flux0 team