Sign In

dedot

Package Overview
Dependencies
Maintainers
1
Versions
164
Alerts
File Explorer

Advanced tools

Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

dedot

A delightful JavaScript/TypeScript client for Polkadot & Substrate

Source
npmnpm
Version
0.16.0
Version published
Weekly downloads
760
43.4%
Maintainers
1
Weekly downloads
 
Created
Source

Dedot Banner

Dedot

Delightful JavaScript/TypeScript client for Polkadot & Polkadot SDK-based blockchains.

Version Unit test E2E test License weekly downloads Chat on Telegram

Dedot is the next-generation JavaScript client for Polkadot and Polkadot SDK-based blockchains. Designed to elevate the dapp development experience, Dedot is built & optimized to be lightweight and tree-shakable, offering precise Types & APIs suggestions for individual Polkadot SDK-based blockchain network and ink! Smart Contracts. Dedot also helps dapps efficiently connect to multiple chains simultaneously as we head toward a seamless multi-chain future.

Features

  • ✅ Small bundle size, tree-shakable (no more bn.js or wasm-blob tight dependencies)
  • ✅ Types & APIs suggestions for each individual Polkadot SDK-based blockchain network (@dedot/chaintypes)
  • ✅ Familiar api style with @polkadot/api, easy & fast migration!
  • ✅ Native TypeScript type system for scale-codec
  • ✅ Compatible with @polkadot/extension-based wallets
  • ✅ Support Metadata V14, V15, V16 (latest)
  • ✅ Built-in metadata optimization (caching)
  • ✅ Build on top of both the new & legacy ( deprecated soon) JSON-RPC APIs
  • ✅ Support light clients (e.g: smoldot)
  • Typed Contract APIs
  • ✅ Fully-typed low-level JSON-RPC client

[!TIP] Are you developing an ink! dApp?

Check out Typink (https://typink.dev), a comprehensive toolkit for ink! dApp development, built on Dedot!

Documentation

Check out Dedot documentation on the website: https://dedot.dev

Example

  • Install packages
npm i dedot # or yarn, pnpm

npm i -D @dedot/chaintypes
  • Connect to the network
import { DedotClient, WsProvider } from 'dedot';
import type { PolkadotApi } from '@dedot/chaintypes';

const provider = new WsProvider('wss://rpc.polkadot.io');
const client = await DedotClient.new<PolkadotApi>(provider);

// Call rpc `state_getMetadata` to fetch raw scale-encoded metadata and decode it.
const metadata = await client.rpc.state_getMetadata();
console.log('Metadata:', metadata);

// Listen to best blocks
client.on('bestBlock', (block: PinnedBlock) => { // or 'finalizedBlock'
  console.log(`Current best block number: ${block.number}, hash: ${block.hash}`);
});

// Query on-chain storage
const balance = await client.query.system.account(<address>);
console.log('Balance:', balance);

// Get pallet constants
const ss58Prefix = client.consts.system.ss58Prefix;
console.log('Polkadot ss58Prefix:', ss58Prefix);

// Call runtime api
const pendingRewards = await client.call.nominationPoolsApi.pendingRewards(<address>)
console.log('Pending rewards:', pendingRewards);

// Disconnect
// await client.disconnect();

Resources & announcements

Real-World Projects Powered by Dedot

Acknowledgment

Dedot take a lot of inspirations from project @polkadot/api. A big thank to all the maintainers/contributors of this awesome library.

Proudly supported by Web3 Foundation Grants Program.

License

Apache-2.0

FAQs

Package last updated on 08 Sep 2025

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts