Get started by [creating a Metal account](https://app.getmetal.io/signup).
Then, you can easily take advantage of the `MetalRetriever` class to start retrieving your data for semantic search, prompting context, etc. This class takes a `Metal` instance and a dictionary of parameters to pass to the Metal API.
```python
from langchain.retrievers import MetalRetriever
from metal_sdk.metal import Metal
metal = Metal("API_KEY", "CLIENT_ID", "INDEX_ID");