starknet-io/starknet.js

Health v2 · maintenance only

Adoption not part of the score

1255 stars · 826 forks observed · 2026-09-29

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Starknet.js is the official JavaScript/TypeScript library for interacting with the Starknet L2 network, a ZK-rollup scaling solution for Ethereum. It provides Provider, Account, Contract, and Signer APIs for reading blockchain state, signing transactions, and calling smart contracts written in Cairo.

Use cases

• connect a dapp frontend to the starknet network
• call and invoke starknet smart contracts from javascript
• sign transactions and messages with a starknet account
• deploy new contracts and accounts on starknet
• read blockchain state like blocks and contract storage
• convert cairo types like uint256 to javascript big numbers
• build a wallet or trading interface on starknet
• monitor starknet events over websockets

When to choose

• you are building a web or node.js application on starknet
• you need the official, well-documented client library with full TypeScript support
• you want to interact with Cairo contracts from JavaScript with automatic type transformations
• you need both HTTP and WebSocket RPC channels to starknet nodes

When to avoid

• you are developing contracts in Cairo rather than interacting with them from JS
• you target a different blockchain like Ethereum L1 directly (use ethers.js or viem)
• you need a non-JavaScript language binding for starknet

Facets

library · maturity active

sdk http-client websocket cryptography middleware blockchain web-development developer-tools apis browser cross-platform starknet starkware zk-rollup zk-starks ethereum l2 cairo smart-contracts dapp-development web3 blockchain-client transaction-signing cryptocurrency nodejs javascript typescript

Member repositories

For agents

markdown · JSON · MCP: product_card(name="starknet-io/starknet.js")