Salt SDK

Salt SDK is a TypeScript client for creating and managing Salt organisations, their accounts, policies, and MPC-signed transactions.

Use it to:

• Co-ordinate policy-controlled MPC signing
• Submit MPC-signed transactions

Documentation

📃 API Reference

Install

• ESM only
• Node.js 24 or later
• viem is a peer dependency

npm install salt-sdk viem
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Example

// An existing Salt organisation and account are needed for this transaction example
import { Salt } from 'salt-sdk';
import {
  createPublicClient,
  createWalletClient,
  http,
  parseEther,
  type Hex,
} from 'viem';
import { privateKeyToAccount } from 'viem/accounts';
import { arbitrumSepolia, sepolia } from 'viem/chains';

// Create an instance — TESTNET uses Arbitrum Sepolia as its Key Store Network
const salt = new Salt({ environment: 'TESTNET' });

// Set up a viem wallet client
const account = privateKeyToAccount(process.env.PRIVATE_KEY as Hex);
const walletClient = createWalletClient({
  account,
  chain: arbitrumSepolia,
  transport: http(),
});

// Authenticate with SIWE
await salt.authenticate(walletClient);

// Fetch your organisations and accounts
const orgs = await salt.getOrganisations();
const accounts = await salt.getAccounts(orgs[0].id);

// Start viem in order to submit a native ETH transfer to Sepolia
const publicClient = createPublicClient({
  chain: sepolia,
  transport: http(process.env.SEPOLIA_RPC_URL),
});

const ceremony = await salt.submitTx({
  accountId: accounts[0].id,
  to: '0x000000000000000000000000000000000000dEaD',
  value: parseEther('0.01'),
  chainId: 11155111,
  userAddress: account.address,
  walletClient,
  publicClient,
});

// Track progress: proposing → signing → broadcasting → confirming → success | failure
ceremony.on('stateChanged', ({ stage }) => console.log('tx is now', stage));

// Wait for MPC signing + broadcast to complete
const { transaction } = await ceremony.wait();
console.dir(transaction);
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Learn More: Salt constructor · authenticate · getOrganisations · getAccounts · submitTx

Full API reference and more examples at developer.salt.space/sdk/.

Terms of Service

By using the Salt SDK, you agree to the Terms of Service.