XianBuild With Python. Run Decentralized.

Python-authored smart contracts, configurable execution runtimes, indexed services, and shielded application building blocks.

Get Started

Learn what Xian is, choose the right developer setup, and deploy your first contract without guessing which repo does what.

Start here

Write contracts in a restricted, deterministic Python subset with storage, events, imports, testing tools, and security patterns.

Write contracts

Understand transactions, consensus, chi, the ABCI boundary, the Xian VM, and how shielded execution fits into the stack.

Explore concepts

Operate nodes with `xian-cli`, `xian-stack`, and `xian-abci`, including runtime configuration, upgrades, localnet testing, and validator posture.

Run a node

Use canonical RPC and ABCI queries, dashboard REST and WebSocket feeds, BDS-backed indexed reads, and optional GraphQL.

View APIs

Use `xian-js`, `xian-py`, wallets, the contract hub, MCP server, playground, proving tools, and other developer-facing surfaces.

Browse tools

Build concrete Xian patterns instead of reading isolated API snippets.

Install reusable protocol modules or start from complete application/operator workflows.

Use the reference section for fast answers while coding or operating a node.