# Indexing a DeFi liquidity pool (Blend)

Look at the post in our blog: [Indexing the Blend YieldBlox Pool in 125 Lines of Code and 8 Minutes](https://blog.xycloo.com/blog/indexing-blend-ybx-pool).&#x20;

The main topics covered in the tutorial are:

* Setting up a Zephyr program and its tabes.
* Writing the ingestion logic: storing in DB tables different operations for a specific pool contract.
* Building a custom API to retrieve the stored data.
* Locally test the program.
* Deploy and perform a catchup.&#x20;