Client Libraries and SDK

The Decentral-America GitHub organization publishes an open-source SDK and tooling ecosystem for building on DecentralChain. All official packages are written in TypeScript and released under the MIT license.

Package	Description
transactions	Build and sign (including multi-sign) all 16 transaction types
node-api-js	Full Node REST API JavaScript client library
data-service-client-js	HTTP client for the DecentralChain data service API — asset search, transaction history, DEX data
signer	Wallet connection and transaction signing orchestrator for web apps
cubensis-connect-provider	Cubensis Connect wallet provider implementation, used together with signer
cubensis-connect-types	TypeScript type definitions for Cubensis Connect
ts-lib-crypto	Cryptographic primitives — key generation, signing, hashing, base58/base64 encoding
ts-types	Shared TypeScript type definitions for the SDK
data-entities	Domain model classes: Asset, Money, OrderPrice
oracle-data	Oracle data parsing and encoding utilities
protobuf-serialization	Protocol Buffer serialization for transactions
ledger	Ledger hardware wallet JavaScript interface
marshall	Binary serialization/deserialization for DecentralChain data structures
java-sdk	Java client library

Installing

Install only the packages you need for the layer you’re working at. For example, to build, sign, and broadcast transactions from a Node.js backend:

npm install @decentralchain/transactions @decentralchain/node-api-js

To build a browser dApp that lets users sign with their own wallet instead of a raw seed, see Wallet Integration.

For usage examples, see How-To Guides.