# Compose the Future on Stellar The best smart contract platforms aren't just built—they're built *together*. Composability is key to a thriving ecosystem, and that starts with you. Instead of building from scratch, join us for the second of our mini-hackathon series where we spotlight and build directly on top of real, live projects on Stellar. This month’s featured projects are **[Soroswap](http://docs.soroswap.finance/)** and **[DeFindex](https://docs.defindex.io/)**, two powerful DeFi protocols developed by the **[PaltaLabs](https://paltalabs.io/)** team and driving innovation on Stellar. Soroswap is a **decentralized exchange** and **aggregator** that guarantees users the **best price** across liquidity sources, while DeFindex offers **yield strategies as a service**—making it simple to deploy, manage, and earn from automated DeFi vaults. Built to work seamlessly together, these protocols are perfect for hacking on in tandem—and the PaltaLabs team will be actively supporting participants throughout the hackathon! # **Intro to Soroswap.Finance:** [Soroswap.Finance](https://docs.soroswap.finance/) is an open-source protocol that enables users to exchange one asset for another without relying on a centralized party. It also tackles the problem of liquidity fragmentation across Stellar. The development of Soroswap.Finance and its user interface is led by the[ PaltaLabs](https://paltalabs.io) team. Soroswap.Finance includes: - [Soroswap AMM:](https://docs.soroswap.finance/01-protocol-overview) An Automated Market Maker that facilitates token swaps and liquidity provision. This is where users can provide liquidity to pools and trade between assets. If you just need a simple swap between two assets, this is the simplest way to go! - [Soroswap Aggregator:](https://docs.soroswap.finance/soroswap-aggregator) A smart contract that executes trades across multiple liquidity pools based on predefined instructions, enabling advanced routing and split trades for better execution. - [Soroswap Swap Route API: ](https://docs.soroswap.finance/soroswap-api)The core engine of the aggregator. This API calculates the best way to split a trade across available routes, which can then be executed using the Aggregator contract. **Important Links:** [Soroswap Website ](http://soroswap.finance/)| [Soroswap App](https://app.soroswap.finance/) | [Soroswap Docs](http://docs.soroswap.finance/) |[ Soroswap API Docs](https://api.soroswap.finance/docs) | [Soroswap API Registration Form](https://dorahacks.io/hackathon/stellar-hacks-paltalabs/api-registration) | [Soroswap Github](https://github.com/soroswap/) | [Soroswap Discord](https://discord.gg/qvhBEAWjgA) | [Soroswap X Account](https://x.com/SoroswapFinance) # **Intro to DeFindex:** **DeFindex** is an innovative solution that enables wallet builders to offer yield-generating accounts to their users in a simple and secure way. By leveraging a variety of decentralized finance (DeFi) strategies, DeFindex streamlines the process of earning yield. **DeFindex Core Components:** - **Strategies:** Smart contracts that connect to underlying DeFi protocols and execute predefined steps to maximize returns on specific assets. - **Vaults:** The user-facing smart contracts. Each vault can support multiple assets and strategies, managing how funds are allocated. Wallets can integrate these vaults and earn a share of their users’ yield. Why DeFindex: - **Easy to use:** One-click yield for users. - **Automated & secure:** Smart contracts manage everything. - **High returns:** Earnings are reinvested automatically. - **Built for developers:** Simple tools and customizable integrations. - **User-controlled & transparent:** No custodial risk—users stay in control. **Important Links:** [DeFindex Website ](https://www.defindex.io/)| [DeFindex Docs](https://docs.defindex.io/) | [DeFindex Github](https://github.com/paltalabs/defindex) | [DeFindex Discord](https://discord.gg/3RgnFX4meG) | [DeFindex X Account](https://x.com/defindex_) # The Challenge: Build on Soroswap and DeFindex. Please watch the following presentation to quickly get up to speed on the functionality and contracts behind the projects.  [View Presentation Slides](https://docs.google.com/presentation/d/1Fxfy8JG5XPeLXf5ITM8q4FwVC3h8DYybEEKK9bgxLgE/edit?usp=sharing) [X Spaces covering details of the hackathon and submission tips](https://x.com/i/spaces/1vOxwXyDoXqKB) # Need inspiration? Check out the IDEAS tab for some project ideas! # **Prize Structure** This hackathon features a single, focused track with awards for the top three projects. - **First Place:** $3,000 in XLM - **Second Place:** $2,000 in XLM - **Third Place:** $1,000 in XLM # **Why Join the Composability Hackathon?** - **$6,000 in XLM Awards:** Compete for a prize pool dedicated to rewarding top-tier composability and innovation. - **Direct Project Support:** Get hands-on guidance during a [kickoff workshop](https://youtu.be/cn2a8SzY9vI) hosted by the PaltaLabs team. We have a dedicated [Telegram group](https://t.me/+-O4isAZikdU0MzVh) for support and mentorship during the hackathon. - **Build on a Live Platform:** Gain invaluable experience by integrating directly with PaltaLabs's live SoroSwap and DeFindex Contracts, APIs, SDKs, and tools.