1inch logo

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. (Solana is excluded because we have already built it)

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
🥇
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 5 teams will receive $300
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

Workshop

Cross chain Swaps and Beyond with 1inch

1inch’s Matt Snow presents “Cross Chain Swaps and Beyond”. From ETH NYC 2019 hackathon roots to today’s support of ...

This workshop is happening in-person

05:30 PM IST — Friday, Sep 26, 2025 in Workshop Room 1

Jobs