Typescript SDK for Aptos

Latest Version

Experimental Development Version

The Aptos TypeScript SDK provides a convenient way to interact with the Aptos blockchain using TypeScript. It offers a set of utility functions, classes, and types to simplify the integration process and enhance developer productivity.

This repository supports version >= 0.0.0 of the Aptos SDK npm package.

Installation

For use in Node.js or a web application

Install with your favorite package manager such as npm, yarn, or pnpm:

pnpm install @aptos-labs/ts-sdk

For use in a browser

You can add the SDK to your web application using a script tag:

<script src="https://unpkg.com/@aptos-labs/ts-sdk/dist/browser/index.global.js" />

Then, the SDK can be accessed through window.aptosSDK.

Usage

Initialize Aptos to access the SDK API.

// initiate the main entry point into Aptos SDK
const aptos = new Aptos();

If you want to pass in a custom config

// an optional config information for the SDK client instance.
const config = new AptosConfig({ network: Network.LOCAL }); // default network is devnet
const aptos = new Aptos(config);

Read data from chain

const modules = await aptos.getAccountModules({ accountAddress: "0x123" });

Account management (default to Ed25519)

Note: We introduce a Single Sender authentication (as introduced in AIP-55). Generating an account defaults to Legacy Ed25519 authentication with the option to use the Single Sender unified authentication

Generate new keys

const account = Account.generate(); // defaults to Legacy Ed25519
const account = Account.generate({ scheme: SingingSchemeInput.Secp256k1 }); // Single Sender Secp256k1
const account = Account.generate({ scheme: SingingSchemeInput.Ed25519, legacy: false }); // Single Sender Ed25519

Derive from private key

// Create a private key instance for Ed25519 scheme
const privateKey = new Ed25519PrivateKey("myEd25519privatekeystring");
// Or for Secp256k1 scheme
const privateKey = new Secp256k1PrivateKey("mySecp256k1privatekeystring");

// Derive an account from private key

// This is used as a local calculation and therefore is used to instantiate an `Account`
// that has not had its authentication key rotated
const account = await Account.fromPrivateKey({ privateKey });

// Also, can use this function that resolves the provided private key type and derives the public key from it
// to support key rotation and differentiation between Legacy Ed25519 and Unified authentications
// Read more https://github.com/aptos-labs/aptos-ts-sdk/blob/main/src/api/account.ts#L364
const aptos = new Aptos();
const account = await aptos.deriveAccountFromPrivateKey({ privateKey });

Derive from private key and address

// Create a private key instance for Ed25519 scheme
const privateKey = new Ed25519PrivateKey("myEd25519privatekeystring");
// Or for Secp256k1 scheme
const privateKey = new Secp256k1PrivateKey("mySecp256k1privatekeystring");

// Derive an account from private key and address

// create an AccountAddress instance from the account address string
const address = AccountAddress.from("myaccountaddressstring");
// Derieve an account from private key and address
const account = await Account.fromPrivateKeyAndAddress({ privateKey, address });

Derive from path

const path = "m/44'/637'/0'/0'/1";
const mnemonic = "various float stumble...";
const account = Account.fromDerivationPath({ path, mnemonic });

Submit transaction

Single Signer transaction

Using transaction submission api

const alice: Account = Account.generate();
const bobAddress = "0xb0b";
// build transaction
const transaction = await aptos.transaction.build.simple({
  sender: alice.accountAddress,
  data: {
    function: "0x1::coin::transfer",
    typeArguments: ["0x1::aptos_coin::AptosCoin"],
    functionArguments: [bobAddress, 100],
  },
});

// using sign and submit separately
const senderAuthenticator = aptos.transaction.sign({ signer: alice, transaction });
const committedTransaction = await aptos.transaction.submit.simple({ transaction, senderAuthenticator });

// using signAndSubmit combined
const committedTransaction = await aptos.signAndSubmitTransaction({ signer: alice, transaction });

Using built in transferCoinTransaction

const alice: Account = Account.generate();
const bobAddress = "0xb0b";
// build transaction
const transaction = await aptos.transferCoinTransaction({
  sender: alice,
  recipient: bobAddress,
  amount: 100,
});

const pendingTransaction = await aptos.signAndSubmitTransaction({ signer: alice, transaction });

Documentation and examples

• For full SDK documentation, check out the TypeScript SDK documentation
• For reference documenation, check out the API reference documentation for the associated version.
• For in-depth examples, check out the examples folder with ready-made package.json files to get you going quickly!

Testing

To run the SDK tests, simply run from the root of this repository:

Note: for a better experience, make sure there is no aptos local node process up and running (can check if there is a process running on port 8080).

pnpm i
pnpm test

Troubleshooting

If you see import error when you do this

import { Aptos, AptosConfig, Network } from "@aptos-labs/ts-sdk";

It could be your tsconfig.json is not incompatible, make sure your moduleResolution is set to node instead of bundler.

Contributing

If you found a bug or would like to request a feature, please file an issue. If, based on the discussion on an issue you would like to offer a code change, please make a pull request. If neither of these describes what you would like to contribute, checkout out the contributing guide.