Typescript SDK for Aptos

This library is experimental. Therefore, the API is unstable and may change without warning.

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@experimental

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@experimental/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 });
const aptos = new Aptos(config);

Read data from chain

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

Keys management (default to Ed25519)

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

Generate new keys

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

Derive from private key

const aptos = new Aptos();
// This functions 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 account = await aptos.deriveAccountFromPrivateKey({ privateKey: privateKey });

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";
const transaction = await aptos.generateTransaction({
  sender: alice.accountAddress.toString(),
  data: {
    function: "0x1::coin::transfer",
    type_arguments: [new TypeTagStruct(StructTag.fromString("0x1::aptos_coin::AptosCoin"))],
    arguments: [AccountAddress.fromHexInput(bobAddress), new U64(100)],
  },
});

let committedTransaction = await aptos.signAndSubmitTransaction({ signer: alice, transaction });

Using built in transferCoinTransaction

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

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

Documentation and examples

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: make sure aptos local node is up and running. Take a look at the local development network guide for more details.

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.

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