TypeScript SDK for Aptos

The TypeScript SDK allows you to connect, explore, and interact with the Aptos blockchain. You can use it to request data, send transactions, set up test environments, and more!

Learn More

For comprehensive guides, tutorials, and API reference, visit aptos.dev:

• Quickstart Guide - Get up and running quickly
• SDK Tutorials - Step-by-step tutorials
• API Reference - Complete API documentation
• Examples - Code examples and sample applications

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 with Bun

The SDK is compatible with the Bun runtime. Install the SDK using Bun's package manager:

bun add @aptos-labs/ts-sdk

For use in a browser

The SDK is ESM-only and works with any modern bundler (Vite, webpack, etc.):

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

Usage

Option 1: Aptos class (all-in-one)

The simplest way to get started. Not tree-shakeable — pulls in all sub-modules.

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

const config = new AptosConfig({ network: Network.TESTNET });
const aptos = new Aptos(config);

Option 2: Namespace classes from sub-paths (tree-shakeable)

Import only the namespaces you need for smaller bundles with full autocomplete:

import { Network } from "@aptos-labs/ts-sdk";
import { General, AptosConfig } from "@aptos-labs/ts-sdk/general";
import { Faucet } from "@aptos-labs/ts-sdk/faucet";

const config = new AptosConfig({ network: Network.TESTNET });
const general = new General(config);
const faucet = new Faucet(config);

Option 3: Standalone functions (maximum tree-shaking)

For the smallest possible bundles (e.g., wallet adapters), import the standalone functions from their sub-paths. AptosConfig / Network are also available from their sub-paths (@aptos-labs/ts-sdk/general), but importing them from the main barrel is fine — the package is marked sideEffects: false, so modern bundlers still tree-shake unused exports.

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

const config = new AptosConfig({ network: Network.TESTNET });
const ledger = await getLedgerInfo({ aptosConfig: config });

Reading Data From Onchain (Guide)

const accountInfo = await aptos.account.getAccountInfo({ accountAddress: "0x123" });
const modules = await aptos.account.getAccountModules({ accountAddress: "0x123" });
const tokens = await aptos.account.getAccountOwnedTokens({ 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: SigningSchemeInput.Secp256k1Ecdsa }); // Single Sender Secp256k1
const account = Account.generate({ scheme: SigningSchemeInput.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 = 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
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");
// Derive an account from private key and address
const account = 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 (Tutorial)

/**
 * This example shows how to use the Aptos SDK to send a transaction.
 * Don't forget to install @aptos-labs/ts-sdk before running this example!
 */
 
import {
    Account,
    Aptos,
    AptosConfig,
    Network,
} from "@aptos-labs/ts-sdk";
 
async function example() {
    console.log("This example will create two accounts (Alice and Bob) and send a transaction transferring APT to Bob's account.");
 
    // 0. Setup the client and test accounts
    const config = new AptosConfig({ network: Network.TESTNET });
    const aptos = new Aptos(config);
 
    let alice = Account.generate();
    let bob = Account.generate();
 
    console.log("=== Addresses ===\n");
    console.log(`Alice's address is: ${alice.accountAddress}`);
    console.log(`Bob's address is: ${bob.accountAddress}`);
 
    console.log("\n=== Funding accounts ===\n");
    await aptos.faucet.fundAccount({
        accountAddress: alice.accountAddress,
        amount: 100_000_000,
    });  
    await aptos.faucet.fundAccount({
        accountAddress: bob.accountAddress,
        amount: 100,
    });
    console.log("Funded Alice and Bob's accounts!")
 
    // 1. Build
    console.log("\n=== 1. Building the transaction ===\n");
    const transaction = await aptos.transaction.build.simple({
        sender: alice.accountAddress,
        data: {
        // All transactions on Aptos are implemented via smart contracts.
        function: "0x1::aptos_account::transfer",
        functionArguments: [bob.accountAddress, 100],
        },
    });
    console.log("Built the transaction!")
 
    // 2. Simulate (Optional)
    console.log("\n === 2. Simulating Response (Optional) === \n")
    const [userTransactionResponse] = await aptos.transaction.simulate.simple({
        signerPublicKey: alice.publicKey,
        transaction,
    });
    console.log(userTransactionResponse)
 
    // 3. Sign
    console.log("\n=== 3. Signing transaction ===\n");
    const senderAuthenticator = aptos.transaction.sign({
        signer: alice,
        transaction,
    });
    console.log("Signed the transaction!")
 
    // 4. Submit
    console.log("\n=== 4. Submitting transaction ===\n");
    const submittedTransaction = await aptos.transaction.submit.simple({
        transaction,
        senderAuthenticator,
    });
 
    console.log(`Submitted transaction hash: ${submittedTransaction.hash}`);
 
    // 5. Wait for results
    console.log("\n=== 5. Waiting for result of transaction ===\n");
    const executedTransaction = await aptos.transaction.waitForTransaction({ transactionHash: submittedTransaction.hash });
    console.log(executedTransaction)
};
 
example();

Using Struct and Enum Arguments

The SDK supports passing public copy structs and enums as transaction arguments. You must encode them using the StructEnumArgumentParser before passing to transaction building functions:

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

const config = new AptosConfig({ network: Network.TESTNET });
const aptos = new Aptos(config);
const parser = new StructEnumArgumentParser(config);

// Example 1: Simple struct argument
const pointType = parseTypeTag("0x1::shapes::Point") as TypeTagStruct;
const pointArg = await parser.encodeStructArgument(pointType, { x: "10", y: "20" });

const transaction = await aptos.transaction.build.simple({
  sender: alice.accountAddress,
  data: {
    function: "0x1::shapes::draw_point",
    functionArguments: [pointArg],
  },
});

// Example 2: Nested structs
const lineType = parseTypeTag("0x1::shapes::Line") as TypeTagStruct;
const lineArg = await parser.encodeStructArgument(lineType, {
  start: { x: "0", y: "0" },
  end: { x: "10", y: "10" }
});

const transaction2 = await aptos.transaction.build.simple({
  sender: alice.accountAddress,
  data: {
    function: "0x1::shapes::draw_line",
    functionArguments: [lineArg],
  },
});

// Example 3: Enum variants
const colorType = parseTypeTag("0x1::game::Color") as TypeTagStruct;
const colorArg = await parser.encodeEnumArgument(colorType, { Red: {} });

const transaction3 = await aptos.transaction.build.simple({
  sender: alice.accountAddress,
  data: {
    function: "0x1::game::set_color",
    functionArguments: [colorArg],
  },
});

// Example 4: Enum with fields
const accountTypeTag = parseTypeTag("0x1::game::AccountType") as TypeTagStruct;
const accountTypeArg = await parser.encodeEnumArgument(accountTypeTag, {
  Premium: { "0": "100" }
});

const transaction4 = await aptos.transaction.build.simple({
  sender: alice.accountAddress,
  data: {
    function: "0x1::game::create_player",
    functionArguments: [accountTypeArg],
  },
});

Features:

• Support for nested structs/enums (up to 7 levels deep)
• Generic type parameter substitution (T0, T1, etc.)
• All Move primitive types (bool, u8-u256, i8-i256, address)
• Special framework types (String, Object, Option)
• Option dual format support (vector []/[value] or enum {None:{}}/{Some:{0:value}})
• Module ABI caching for performance

Troubleshooting

If you see an import error when you do this:

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

Make sure your tsconfig.json uses a compatible moduleResolution setting. The SDK is ESM-only and works with "nodenext", "node16", or "bundler" module resolution.

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, check out the contributing guide.

Running unit tests

pnpm test                        # Run all tests (unit + e2e)
vitest run tests/unit            # Run unit tests only
vitest run keyless.test.ts       # Run a specific test file