llama-hub/loader_hub/mongo/README.md

# Mongo Loader

This loader loads documents from MongoDB. The user specifies a Mongo instance to
initialize the reader. They then specify the collection name and query params to
fetch the relevant docs.

## Usage

Here's an example usage of the SimpleMongoReader.

```python
from llama_index import download_loader
import os

SimpleMongoReader = download_loader('SimpleMongoReader')

host = "<host>"
port = "<port>"
db_name = "<db_name>"
collection_name = "<collection_name>"
# query_dict is passed into db.collection.find()
query_dict = {}
reader = SimpleMongoReader(host, port)
documents = reader.load_data(db_name, collection_name, query_dict=query_dict)
```

This loader is designed to be used as a way to load data into [LlamaIndex](https://github.com/jerryjliu/gpt_index/tree/main/gpt_index) and/or subsequently used as a Tool in a [LangChain](https://github.com/hwchase17/langchain) Agent. See [here](https://github.com/emptycrown/llama-hub/tree/main) for examples.