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@kitsonk/langchain-kv

Implementations of various persistence APIs for LangChain.js on-top of Deno KV.

Current capabilities are:

  • DenoKvSaver an implementation of the checkpoint saver functionality for LangGraph. This allows persistence and time travel of the graph state when working with LangGraph workflows.
  • DenoKvCache an implementation of the LangChain cache API, which is mainly used to cache results from language models.
  • DenoKvChatMessageHistory an implementation of the LangChain message history API.
  • DenoKvRecordManager an implementation of the LangChain record manager API.
  • DenoKvByteStore and implementation of LangChain's byte store API.

Copyright 2025 Kitson P. Kelly. All rights reserved. MIT License.

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Implementations of various persistence APIs for LangChain.js on-top of Deno KV

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