Neuron
A PHP framework for building and orchestrating agentic AI applications, connecting LLMs, tools, vector databases and memory into agents with event-driven workflows, human-in-the-loop steps, streaming and MCP support.
Neuron is a PHP framework for creating and orchestrating AI agents inside PHP applications. It covers the whole agentic application lifecycle: interfaces to large language models, data loading, multi-agent orchestration, and monitoring and debugging of running agents.
Its core abstraction is an event-driven Workflow with checkpointing, which supports human-in-the-loop approval steps, interruption, multi-agent coordination, streaming responses, agentic UI protocols such as AG-UI and the Vercel AI SDK, MCP connectors, and asynchronous execution; the same Workflow that runs a first simple agent in the getting-started guide can grow into a multi-agent system with state, loops and human approvals in production without switching frameworks.
Around the core framework there is a registry of extensions and tools built specifically for Neuron-based agentic applications. It is written in PHP and released under the MIT license.