> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wayak.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Data lakehouse

> Wayak's built-in storage for uploading and querying structured files

The data lakehouse is Wayak's built-in storage layer. Upload Excel files, CSVs, and other structured documents directly — no external database required. Once uploaded, your files become queryable tables that the agent can access just like any other data source.

<Frame caption="Browse and manage your lakehouse tables">
  <img src="https://mintcdn.com/wayak/SyWPcqQONHnC0uoc/app-screenshots/Data%20Tables.png?fit=max&auto=format&n=SyWPcqQONHnC0uoc&q=85&s=65f1c3bf0a9588ebe1c6edb96715d38d" alt="Wayak lakehouse tables" width="4236" height="3548" data-path="app-screenshots/Data Tables.png" />
</Frame>

## What you can upload

* Excel files (`.xlsx`, `.xls`)
* CSV files (`.csv`)
* Any structured, tabular document

## How it works

1. Upload a file through the Wayak dashboard
2. Wayak parses the file, infers column types, and creates a queryable table
3. The agent can query it immediately — no configuration needed

The lakehouse is the fastest way to get data into Wayak. If you have a spreadsheet, you can be chatting with it in under a minute.