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Pick your tools · Reference

Libraries & SDKs

NEAR’s tooling moved fast in 2025–2026: near-api-js folded its modular packages back into one, NEAR Connect replaced Wallet Selector as the recommended wallet connector, NEAR Lake stopped indexing, and the JavaScript near-cli was archived. Old tutorials still point at the previous generation.

This module is a curated, checked map of the libraries, SDKs and services worth knowing today — each with its official repo or docs link, a clear official / community / deprecated status, and a "which one should I pick?" rule of thumb.

Each lesson is one category: contract SDKs, testing, JavaScript and other clients, CLI and build tools, data and indexing, and cross-chain. If you come from Ethereum, look for the EVM callouts that map each tool to its Foundry, Hardhat, viem or The Graph equivalent.

7 lessons~35 min21 quiz questionsFree · no sign-up

Start with “Contract SDKs & building blocks”

What you’ll learn

  • Choose the right contract SDK and helper crates (near-sdk-rs, near-contract-standards, near-plugins, near-sdk-contract-tools).
  • Test contracts at both levels: unit tests with testing_env! and integration tests with near-workspaces and the sandbox.
  • Pick between near-api-js, near-kit, NEAR Connect and Wallet Selector for scripts versus browser dApps.
  • Use near-cli-rs and cargo-near to scaffold, build reproducibly and deploy.
  • Decide when RPC, a data API (FastNEAR, NearBlocks, Pikespeak, Intear) or your own indexer is the right source of data.
  • Tell Chain Signatures, NEAR Intents / 1Click and Omni Bridge apart, and know which one fits a cross-chain feature.
  • Recognise deprecated tools (JS near-cli, near-sdk-as, near-api-py, @near-js/* packages, NEAR Lake) in older tutorials.

Lessons