# Hydra SDK

> A TypeScript toolkit for building Cardano wallet applications with Hydra Layer 2 integration.

## Documentation Sets

- [Hydra SDK - Full Documentation](https://hydrasdk.com/llms-full.txt): The complete documentation for Hydra SDK.

## Getting Started

- [Introduction](https://hydrasdk.com/getting-started): What Hydra SDK is, how its packages fit together, and what you need to get started.
- [Installation](https://hydrasdk.com/getting-started/installation): Learn how to install Hydra SDK packages in your project
- [Quick Start](https://hydrasdk.com/getting-started/quick-start): Build your first Cardano wallet application with Hydra SDK
- [Configuration](https://hydrasdk.com/getting-started/configuration): Configure your build tools and environment for Hydra SDK

## Guides

- [Guides](https://hydrasdk.com/guides): Task-oriented, step-by-step guides for building Cardano wallet apps with Hydra SDK.
- [Build a Wallet App](https://hydrasdk.com/guides/build-wallet-app): Assemble a complete Cardano and Hydra Layer 2 wallet app — clone a ready-made React or Vue starter, or build the service layer yourself.
- [Building Transactions](https://hydrasdk.com/guides/transactions): Build, sign, and submit Cardano transactions with the TxBuilder, from simple ADA transfers to Plutus script interactions.
- [Mint and Burn Tokens Guide](https://hydrasdk.com/guides/mint-burn-tokens): Learn how to mint and burn native tokens on Cardano using Hydra SDK
- [Hydra Integration Examples](https://hydrasdk.com/guides/hydra-integration): Examples of integrating with Hydra Network using real patterns
- [Utilities Cookbook](https://hydrasdk.com/guides/utilities-cookbook): Task-oriented recipes for the Hydra SDK utility namespaces — datums, redeemers, time, policies, providers, and more.
- [Integrate from Cardano-CLI](https://hydrasdk.com/guides/cardano-cli-keys): Learn how to use Cardano-CLI generated keys with Hydra SDK using CardanoCliWallet.

## Concepts

- [Why Hydra?](https://hydrasdk.com/concepts): Understanding the benefits and use cases of Hydra Layer 2 scaling solution
- [Commit to Hydra](https://hydrasdk.com/concepts/commit-to-hydra): Learn how to commit UTxOs into a Hydra Head to enable Layer 2 transactions
- [Decommit from Hydra](https://hydrasdk.com/concepts/decommit-from-hydra): Learn how to withdraw UTxOs from a Hydra Head back to Cardano Layer 1
- [Transactions in Hydra](https://hydrasdk.com/concepts/transactions-in-hydra): Learn how to build and execute transactions within a Hydra Head for instant, low-cost operations
- [Smart Contracts in Hydra](https://hydrasdk.com/concepts/smart-contracts-in-hydra): Learn how to use Plutus smart contracts in Hydra Heads for complex DeFi and DApp logic
- [Hydra Protocol Versions](https://hydrasdk.com/concepts/hydra-v2-changes): Hydra Head protocol release timeline, and which hydra-node versions each @hydra-sdk/bridge major supports.

## API Reference

- [API Reference](https://hydrasdk.com/api): Per-package reference for the Hydra SDK — core, bridge, transaction, cardano-wasm, and the utility namespaces.
- [@hydra-sdk/core](https://hydrasdk.com/api/core): Core Cardano wallet API with comprehensive utilities
- [@hydra-sdk/bridge](https://hydrasdk.com/api/bridge): Hydra Layer 2 integration and Head lifecycle management
- [@hydra-sdk/transaction](https://hydrasdk.com/api/transaction): Advanced transaction building and management for Cardano
- [@hydra-sdk/cardano-wasm](https://hydrasdk.com/api/cardano-wasm): Cardano WASM bindings for advanced blockchain operations
- [@hydra-sdk/core - Utilities](https://hydrasdk.com/api/utilities): Comprehensive collection of utility functions for Cardano blockchain data, WASM operations, and common development tasks

## Resources

- [Change Logs](https://hydrasdk.com/resources/changelog): Learn about the changes and updates in each version of the Hydra SDK
- [Migration](https://hydrasdk.com/resources/migration): Upgrade paths for Hydra SDK — bridge v1.x → v2.0, and the earlier v1.1.x utilities system.
- [Performance & Comparison](https://hydrasdk.com/resources/performance): Why Hydra SDK uses WebAssembly, with benchmarks against JavaScript-based Cardano SDKs.

## AI

- [Use with AI](https://hydrasdk.com/ai): Query the Hydra SDK docs from AI assistants via the built-in MCP server, llms.txt, and raw markdown endpoints.