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A modern off-chain framework

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What is Hose?

Hose is a modern off-chain framework for building scalable and composable applications on top of the Cardano blockchain using Rust.

It is designed to work nicely with Aiken, a language for writing smart contracts on Cardano.

Components

ℹ️ Note

Each component has its own README file with more information.

Crate	Description
hose-blueprint	A proc-macro for generating data types from CIP-57 schemas
hose-primitives	A library providing primitives and protocol parameters of Cardano
hose-submission	A library for submitting and evaluating transactions to the Cardano blockchain
hose-txbuilder	A library for building and signing transactions in a composable way

Getting Started

⚠️ TODO

There is a template project available at Liqwid-Labs/hose-template.

General design

Hose provides a semi-opinionated design, with a blessed path to follow, but it is also designed to be flexible and composable.

The general pattern of usage is as follows:

1. You define your on-chain scripts using Aiken.
2. You define your types using the hose-blueprint crate, loading the plutus.json file that the Aiken compiler generates.
3. You define your off-chain logic using the hose-txbuilder crate.
4. You define an API for your off-chain logic, and expose it to your frontend. Including submission using the hose-submission crate.