lmstudio.js

lmstudio.js is the official TypeScript and JavaScript SDK that enables developers to programmatically interact with LM Studio’s local AI runtime. The library exposes the same capabilities used internally by the LM Studio desktop application, allowing external apps to load models, run inference, and build autonomous AI workflows. It is designed to simplify the creation of local AI tools by handling complex concerns such as dependency management, hardware compatibility, and model configuration. The SDK introduces an agent-style API that can execute multi-step tool-using workflows through a single call, enabling more advanced automation scenarios. Applications built with the SDK can run anywhere LM Studio is available, whether in foreground or headless mode. Overall, lmstudio-js acts as a developer bridge between local LLM infrastructure and modern JavaScript applications.