ETHGlobal Cannes

1inch

$20,000

1inch.io
1inch

About

1inch provides a suite of powerful tools that enable developers to build smooth DeFi experiences on Ethereum, Ethereum L2s, and beyond. Hackers can utilize our open-source SDKs, smart contract protocols, and robust APIs to build onchain applications. In this hackathon, we are giving builders three distinct challenges: * Build applications with extensive use of 1inch API * Extend our Limit Order protocol with creative trading strategies for users * Expand the reach of 1inch Cross-chain Swap (Fusion+) to non-EVM chains

Prizes

🔗 Non-EVM Extensions for 1inch Cross-chain Swap (Fusion+) ⸺ $12,000
🥇
1st place
$6,000
🥈
2nd place
$4,000
🥉
3rd place
$2,000
Build a novel extension for 1inch Cross-chain Swap (Fusion+) that enables swaps between Ethereum and one of the following non-EVM chains: Sui, Aptos, Bitcoin/Bitcoin cash/Doge/Litecoin, Tron, Ton, Monad, Near, Starknet, Cardano, Stellar, XRP Ledger, ICP, Tezos, Polkadot, EOS, or Cosmos.

Qualification Requirements

Requirements: - Preserve hashlock and timelock functionality for the non-EVM implementation - Swap functionality should be bidirectional (swaps should be possible to and from Ethereum) - Onchain execution of token transfers should be presented during the final demo - Proper Git commit history (no single-commit entries on the final day)

📈 Extend Limit Order Protocol ⸺ $6,500
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1st place
$3,000
🥈
2nd place
$2,000
🥉
3rd place
$1,500
Build advanced strategies and hooks for the 1inch Limit Order Protocol. Project ideas: - Develop an options hook - Integrate concentrated liquidity - TWAP swap - Other creative projects are welcome Existing examples built on top of Limit Order Protocol include ranged sells and dutch auctions (links in hackathon documentation)

Qualification Requirements

Requirements: - New functionality built on top of Limit Order Protocol (command line script for the implementation is perfectly fine, no UI needed) - Proper Git commit history (no single-commit entries on the final day) Judging criteria: - Innovation and originality - Code quality/completeness - Documentation quality

🍾 Utilize 1inch APIs ⸺ $1,500
Up to 4 teams will receive $375
Utilize 1inch's infrastructure to help build your application - Build with our swap protocols (1inch Cross-chain Swap (Fusion+), Intent-based Swap (Fusion), Classic Swap, limit order protocol) - Build with any of our data APIs (price feeds API, wallet balances API, token metadata API, and many more) - Use our Web3 API to interact with the blockchain

Qualification Requirements

Requirements: - Your project uses at least one 1inch API to provide meaningful functionality for your users - Proper Git commit history (no single-commit entries on the final day) Judging Criteria: - Practicality and usefulness - Code quality/completeness

Resources

1inch Hackathon Guide
https://hackathon.1inch.community
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Workshop

🛠️ Cross-chain Swaps and Beyond with 1inch

We will dive into the design of 1inch's various swap protocols. This includes Classic Swap (AMM/PMM aggregation), F...

This workshop is happening in-person

06:00 PM CEST — Friday, Jul 4, 2025 in Workshop Room 2

Jobs