Developer SDK

SDKs for Every Language

6 production-grade SDKs with 245 conformance tests each. Guaranteed cross-language compatibility, enterprise integrations, and everything you need to ship on-chain.

SDKs & Libraries

JavaScript / TypeScript SDK

Full-featured for browser and Node.js. Transaction building, keychain management, event subscriptions.

npm install @atshi/sdk
npm

Dart SDK

Native Dart SDK for Flutter mobile apps. iOS & Android wallet integrations with native performance.

pub.dev

Java + Spring Boot

Enterprise Java SDK with Spring Boot integration. Annotations, auto-configuration, reactive streams.

Maven

Python + FastAPI

Data science and ML-ready. FastAPI integration, async support, FHE circuit deployment.

PyPI

Go SDK

Cloud-native for microservices. Minimal dependencies, goroutine-safe, Kubernetes-ready.

go get github.com/atshi/sdk-go
go get

Rust SDK

Systems-level for high-performance. Zero-cost abstractions, WASM compilation support.

crates.io
245 conformance tests per SDK — guaranteed cross-language compatibility

Developer Tools

Block Explorer

Real-time transaction explorer. View chains, contracts, tokens, network stats.

CLI Tools

Command-line for deployment, testing, account management. Script your workflow.

API Reference

Complete REST/GraphQL API docs with interactive examples.

Schema Generator

Auto-generate TypeScript, Java, Python types from on-chain JSON schemas.

FHE Toolkit

Tools for building FHE circuits — drag & drop UI to JSON to Python to HEIR to WASM.

Testing Framework

Local test network, snapshot/restore, deterministic block production.

Why Developers Choose ATSHI

Write Once, Deploy Anywhere

WASM contracts from Rust, AssemblyScript, C. Deploy to any ATSHI network.

Built-in Privacy

FHE, per-field encryption, threshold decryption. Privacy by default.

Enterprise-Ready SDKs

245 tests, Spring Boot/FastAPI integrations, production error handling.

Flat Transaction Fees

Transaction costs are fixed and stable — they don't fluctuate with the ATSHI token price. Gas is paid in NUG, a separate utility token with a stable fee schedule. No gas wars, no fee spikes, predictable costs for every operation.

Start Building Today

Pick an SDK, open the playground, or jump straight into the docs. Your first smart contract is minutes away.