langchain/docs/integrations/zep.md

# Zep

>[Zep](https://docs.getzep.com/) - A long-term memory store for LLM applications.

>`Zep` stores, summarizes, embeds, indexes, and enriches conversational AI chat histories, and exposes them via simple, low-latency APIs.
>- Long-term memory persistence, with access to historical messages irrespective of your summarization strategy.
>- Auto-summarization of memory messages based on a configurable message window. A series of summaries are stored, providing flexibility for future summarization strategies.
>- Vector search over memories, with messages automatically embedded on creation.
>- Auto-token counting of memories and summaries, allowing finer-grained control over prompt assembly.
>- Python and JavaScript SDKs.


`Zep` [project](https://github.com/getzep/zep) 

## Installation and Setup

```bash
pip install zep_python
```


## Retriever

See a [usage example](../modules/indexes/retrievers/examples/zep_memorystore.ipynb).

```python
from langchain.retrievers import ZepRetriever
```