# katana + agglayer workshop I Brian Seong

- Channel: [ETHGlobal](https://streameth.org/ethglobal)
- Date: 2025-10-09
- Duration: 24:44
- Topics: Katana, Polygon, DeFi, Layer 2, Special K, Superdocs, hackathon, developer tools, smart contracts, SushiSwap, Morpho, AUSD, liquidity, yield, vault bridge, Chainlink, LayerZero, testnet, Bokuto, Tatara, AI assistant, cross-chain, developer community, contract directory, frontend, solidity, foundry, anvil, deployment, bounties, ecosystem, DApp, yield generation, primitives, integration, documentation, Telegram, support
- Watch: https://streameth.org/watch/yt-RUY783eBz1M
- YouTube: https://www.youtube.com/watch?v=RUY783eBz1M

## Description

Brian Seong from Polygon presents a workshop on building DeFi applications on Katana, a DeFi-focused Layer 2 blockchain incubated by Polygon. Katana is designed from the ground up for DeFi, offering deep liquidity, high yields, and seamless integration with protocols like SushiSwap, Morpho, and AUSD. Developers benefit from comprehensive resources, including Special K (a starter kit with pre-deployed DeFi primitives), Superdocs, AI assistant, and multiple testnets (Katana, Bokuto, Tatara). 

The workshop covers developer tools, contract directories, vault bridge for yield-generating cross-chain transfers, and integration with Chainlink, LayerZero, and more. Brian emphasizes community support, hackathon participation, and bounties for dev tools, DeFi protocols, cross-chain solutions, and open innovation. The hands-on demo walks through using Special K to set up a local environment, build, test, and deploy smart contracts and frontends, streamlining the DeFi development process on Katana.

00:00 Introduction
00:33 What is Katana?
01:37 Katana Documentation & Tools Overview
03:01 Superdocs & Hacker Springboard
04:15 Katana Testnets Explained
05:14 Testnet Tokens & Developer Support
06:00 Getting Started for Hackers
07:21 Developer Community & Ecosystem Explorer
07:53 Katana DeFi Primitives & Integrations
09:00 Developer Ideas & What to Build
10:17 AI x Crypto Use Cases
11:27 Cross-chain & Tooling Opportunities
12:05 Hackathon Tracks & Bounties
14:26 Katana Mission Recap
15:02 Special K Starter Kit Overview
16:33 Special K Project Structure
18:40 Special K Scripts & Commands
19:33 Hands-on: Setting Up Local Environment
21:47 Connecting MetaMask & Deploying DApps
22:53 Building, Testing, and Deploying Contracts
23:23 Running the Frontend Demo
24:19 Developer Workflow Recap & Conclusion

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🇺🇸 *ETHGlobal New York*
This workshop is specifically for ETHGlobal New York, a 3-day hackathon held August 15-17, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal New York 2025 playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh4Xze0ZeSWCSGsw25clPpvZ

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✅ *Follow katana*
X: https://x.com/katana

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Website: https://ethglobal.com
YouTube: https://www.youtube.com/c/ETHGlobal 

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_Are you interested in Ethereum development and entrepreneurship?_
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