LangChain JS

LangChain JS is the JavaScript and TypeScript distribution of LangChain, used to build applications on large language models. The framework allows developers to create, experiment, and analyze language models and agents, providing a rich set of features for natural language processing applications. It enables the creation of agents that use LLMs as reasoning engines to determine what actions to take and what inputs those actions should receive. LangGraph.js adds the graph runtime for agents that loop, branch, and keep state between steps, and tools give those agents a typed interface to external systems. The framework provides a standard interface for agents, as well as the ability to create custom agents, making it ideal for developers who need to integrate AI capabilities into web applications and build context-aware reasoning systems.

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