NEAR Developer Docs

It has never been easier to build smart contracts, decentralized applications, and native cross-chain applications.

\~5 min Rust JavaScript Python Go

Deploy your first contract in minutes

Write smart contracts in Rust, JavaScript, TypeScript or Python. Scaffold a working project with a single command, then build, test, and deploy.

Start the quickstart → Concepts, storage model, and how execution works on NEAR. Actions, callbacks, cross-contract calls, and best practices.

```bash bash theme={"theme":{"light":"github-light","dark":"github-dark"}} $> npx create-near-app@latest ====================================================== 👋 Welcome to Near! Learn more: https://docs.near.org/ 🔧 Let's get your project ready. ====================================================== ✅ What do you want to build? › "Smart Contract" ✅ Name your project to create a contract: "hello-near" ✅ Success! Created 'hello-near', a smart contract in Rust Build, test, and deploy your contract using cargo: * cargo near build * cargo test * cargo near deploy ```

\~10 min React TypeScript

Connect your frontend to NEAR

Use near-api-js and the Wallet Selector to authenticate users and call smart contracts from any frontend framework.

Start the quickstart → Connect wallets, handle sessions, and manage user accounts. How NEAR types map to JavaScript in near-api-js.

```bash bash theme={"theme":{"light":"github-light","dark":"github-dark"}} $> npx create-near-app@latest ====================================================== 👋 Welcome to Near! Learn more: https://docs.near.org/ 🔧 Let's get your project ready. ====================================================== ✅ What do you want to build? › "A Web App" ✅ Select a framework for your frontend › "Vite (React)" ✅ Name your project: "hello-near" ✅ Success! Created 'hello-near', a web-app using Vite React. Start using your new NEAR app: * cd hello-near * npm run dev ```

Multi-chain Ethereum Bitcoin Solana

Sign transactions on any chain

Use Chain Signatures to derive threshold keys and sign transactions on any blockchain — all from a single NEAR account, no bridge or wrapped assets required.

Get started → How NEAR lets one account control wallets on any chain. Key derivation, MPC signing, and implementation details.

```javascript multichain.js theme={"theme":{"light":"github-light","dark":"github-dark"}} import { Account, KeyPair, JsonRpcProvider, KeyPairSigner } from "near-api-js" import { getAdapter, chains } from "multichain.js" async function main() { const nearProvider = new JsonRpcProvider({ url: "https://test.rpc.fastnear.com" }) const nearAccount = new Account("account.testnet", nearProvider, "ed25519:...") const arbitrum = getAdapter({ chain: chains.ARBITRUM, mpcNetwork: "testnet" }) const arbAddress = await arbitrum.getAddressControlledBy({ nearAddress: nearAccount.accountId }) const arbBalance = await arbitrum.getBalance({ address: arbAddress }) console.log("Controlled Account", { arbAddress, arbBalance }) await arbitrum.transfer({ to: "0x2f318C334780961FB129D2a6c30D0763d9a5C970", amount: "10000000000000000", // 0.01 ETH nearAccount, }) } ```

Transactions confirm in \~1–2 seconds on mainnet with deterministic finality. No reorgs, no waiting. Transaction fees under \$0.001. Storage costs \~1 NEAR per 100 KB — fully refundable on deletion. Write in Rust, JavaScript/TypeScript, Python, or Go. Full WASM runtime, no new syntax to learn. Derive threshold keys for any chain — Bitcoin, Ethereum, Solana — from one NEAR account. Run AI inference inside Trusted Execution Environments for verifiable, tamper-proof outputs. Nightshade sharding enables linear throughput scaling as validator count grows.

Get a human-readable account like `yourname.testnet` and fund it immediately with the faucet — no wallet install required. Free testnet account with instant NEAR balance. Ready in under 60 seconds. Run `create-near-app` to generate a working smart contract or full-stack web app in your preferred language. ```bash theme={"theme":{"light":"github-light","dark":"github-dark"}} npx create-near-app@latest ```

Accounts, access keys, gas, transactions, and the NEAR runtime. Write and deploy contracts in Rust, TypeScript, or Python. Connect frontends to NEAR using near-api-js and the Wallet Selector. Sign transactions on any chain from a single NEAR account. FTs, NFTs, DAOs, DEXes, liquid staking, and more — ready to use. Index and query on-chain data with NEAR Lake, BigQuery, and indexers.