Cardano + Hydra Layer 2

Build Cardano DApps with Hydra SDK.

A comprehensive software development kit for building Cardano DApps and wallet applications with Hydra Layer 2 integration.

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3: Core Packages
5+: Applications
100%: TypeScript
WASM: Super Fast
Apache-2.0: License

Capabilities

Everything you need to build

A complete toolkit with modular packages, TypeScript support, and comprehensive documentation.

Cardano Wallet Management

Create, restore, and manage Cardano wallets with full HD wallet support and transaction signing.

Hydra Layer 2 Integration

Complete Hydra Head lifecycle management with real-time transaction processing.

Transaction Builder

Advanced transaction building utilities with UTxO selection and fee optimization.

WASM Integration

High-performance Cardano serialization with browser-optimized WebAssembly.

TypeScript First

Full TypeScript support with comprehensive type definitions and IntelliSense.

Modular Architecture

Extensible package-based architecture for easy customization and integration.

Ecosystem

Apps built with Hydra SDK

Discover powerful applications already using our SDK in production.

Hydra Hub

Provides decentralized Hydra Node management, Hydra Head connectivity, and Layer-2 APIs for building Cardano DApps.

Infrastructure

Hydra SDK Playground

An interactive playground for experimenting with Hydra SDK features and building DApps.

Development

Hydra Fly

A GameFi tournament game built on Cardano Hydra L2 where the top leaderboard player wins rewards.

GameFi

River Cross

A survival GameFi game on Cardano Hydra L2 where players bet tADA to cross a river.

GameFi

Hydra Gacha

An on-chain lottery game built on Cardano Hydra L2 using NFT tickets.

Lottery

Knight

A dungeon survival GameFi game on Cardano Hydra L2 where players bet tADA to defeat enemies.

GameFi

Quick Start

Up and running in minutes

Install the packages, spin up a wallet, and you are ready to build on Hydra.

Terminal

npm install @hydra-sdk/core @hydra-sdk/bridge @hydra-sdk/transaction @hydra-sdk/cardano-wasm

wallet.ts

import { AppWallet, NETWORK_ID } from '@hydra-sdk/core'

// Create new wallet
const wallet = new AppWallet({
networkId: NETWORK_ID.PREPROD,
key: {
  type: 'mnemonic',
  words: AppWallet.brew() // Generate new mnemonic
}
})

// Get account
const account = wallet.getAccount(0, 0)
console.log('Address:', account.baseAddressBech32)

Installation Guide

Install and set up the SDK in your project.

Basic Usage

Create wallets, build transactions, talk to Hydra.

Code Examples

Practical examples for common scenarios.

Guides & Tutorials

Step-by-step guides for building wallets.

Backed by

Sponsors & funding

Hydra SDK is built with the support of our sponsor and the Cardano community through Project Catalyst.

VTechcom

A creative software development technology company, accompanying the future of decentralized applications on Cardano.

Sponsor

Project Catalyst · Fund 14

Development of the Hydra SDK is funded by the Cardano community through Project Catalyst Fund 14.

Grant funding

Community

Join our community

Connect with developers, get support, and stay updated with the latest SDK developments.

GitHub

Contribute to the SDK, report issues, and explore the source code.

Discord

Join our community Discord for support and discussions.

Get quick updates and connect with other developers.

Ready to build on Cardano and Hydra?

Get started with the Hydra SDK and start shipping fast, low-cost Layer 2 applications today.

Get Started View on GitHub