---
title: Interacting with contracts
description: The pages here contain guides and technical documentation for the 3A Protocol Smart Contracts. You can use these docs to learn about protocol Smart Contracts and develop on-chain integrations.
section: Protocol: Technical
order: 127
---

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> **Archived.** The 3A lending protocol and EURO3 on Linea and Polygon were phased out in 2024: no new loans from
> 1 October 2024, and all remaining vaults closed on 30 November 2024
> ([3A DAO's announcement](https://medium.com/@3aDAO/phasing-out-euro3-lending-f5869a3498a8)). This page is kept
> for reference and describes the protocol as it was. Do not send funds to the contracts it lists.