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The Server SDK is currently experimental and not ready for production use. Reach out to partnerships@phantom.com for access.

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Critical security information

The private key for your organization is meant to be stored only on your server, in a secure environment.
  • Never expose this key in client-side code.
  • Never commit it to version control.
  • Store it securely using environment variables or secret management systems.

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Installation

Install the Server SDK using your preferred package manager: 
npm install @phantom/server-sdk

yarn add @phantom/server-sdk

pnpm add @phantom/server-sdk

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Prerequisites

Before using the SDK, you need:
  • Phantom organization credentials, provided when you create an organization with Phantom:
    • Organization ID
    • Organization private key (base58 encoded)
    • App ID
  • Node.js version 16 or higher.

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Quick start

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Step 1: Set up environment variables

Create an .env file in your project root: 
ORGANIZATION_ID=your-organization-id
PRIVATE_KEY=your-base58-encoded-private-key
APP_ID=your-app-id

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Step 2: Initialize the SDK

import { ServerSDK, NetworkId } from "@phantom/server-sdk";
import dotenv from "dotenv";

// Load environment variables
dotenv.config();

// Initialize the SDK
const sdk = new ServerSDK({
  organizationId: process.env.ORGANIZATION_ID!,
  apiPrivateKey: process.env.PRIVATE_KEY!,
  appId: process.env.APP_ID!,
});

// Create a wallet
const wallet = await sdk.createWallet("My First Wallet");
console.log("Wallet ID:", wallet.walletId);
console.log("Addresses:", wallet.addresses);

// Sign a message
const signature = await sdk.signMessage({
  walletId: wallet.walletId,
  message: "Hello, Phantom!",
  networkId: NetworkId.SOLANA_MAINNET,
});
console.log("Signature:", signature);

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Network support

The SDK supports multiple blockchain networks through the NetworkId enum:
NetworkNetworkIdDescription
SolanaNetworkId.SOLANA_MAINNETSolana Mainnet-Beta
NetworkId.SOLANA_DEVNETSolana Devnet
NetworkId.SOLANA_TESTNETSolana Testnet
EthereumNetworkId.ETHEREUM_MAINNETEthereum Mainnet
NetworkId.ETHEREUM_GOERLIGoerli Testnet
NetworkId.ETHEREUM_SEPOLIASepolia Testnet
PolygonNetworkId.POLYGON_MAINNETPolygon Mainnet
NetworkId.POLYGON_MUMBAIMumbai Testnet
OptimismNetworkId.OPTIMISM_MAINNETOptimism Mainnet
ArbitrumNetworkId.ARBITRUM_ONEArbitrum One
BaseNetworkId.BASE_MAINNETBase Mainnet
BitcoinNetworkId.BITCOIN_MAINNETBitcoin Mainnet
SuiNetworkId.SUI_MAINNETSui Mainnet

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Usage examples

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Creating a wallet

import { ServerSDK, NetworkId } from '@phantom/server-sdk';
// Initialize SDK
const sdk = new ServerSDK({
  organizationId: process.env.ORGANIZATION_ID!,
  apiPrivateKey: process.env.PRIVATE_KEY!,
  appId: process.env.APP_ID!,
});

// Create a wallet with a custom name
const wallet = await sdk.createWallet("User Wallet 123");

// Access addresses for different chains
const solanaAddress = wallet.addresses.find(addr => addr.addressType === "Solana")?.address;

const ethereumAddress = wallet.addresses.find(addr => addr.addressType === "Ethereum")?.address;

console.log("Solana address:", solanaAddress);
console.log("Ethereum address:", ethereumAddress);

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Signing and sending transactions

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Solana-native Web3.js transaction objects

import { Transaction, SystemProgram, PublicKey } from "@solana/web3.js";

// Create a Solana transaction
const transaction = new Transaction().add(
  SystemProgram.transfer({
    fromPubkey: new PublicKey(solanaAddress),
    toPubkey: new PublicKey(recipientAddress),
    lamports: 1000000, // 0.001 SOL
  }),
);

// Set transaction parameters
transaction.recentBlockhash = blockhash;
transaction.feePayer = new PublicKey(solanaAddress);

// Sign and send the transaction
const signedTx = await sdk.signAndSendTransaction({
  walletId: wallet.walletId,
  transaction,
  networkId: NetworkId.SOLANA_MAINNET,
});

console.log("Signed transaction:", signedTx.rawTransaction);

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Ethereum/EVM-transaction objects

// Viem transaction object
const evmTransaction = {
  to: "0x742d35Cc6634C0532925a3b8D4C8db86fB5C4A7E",
  value: 1000000000000000000n, // 1 ETH in wei
  data: "0x",
  gasLimit: 21000n,
};

const signedEvmTx = await sdk.signAndSendTransaction({
  walletId: wallet.walletId,
  transaction: evmTransaction, // Native EVM transaction object
  networkId: NetworkId.ETHEREUM_MAINNET,
});

// Ethers.js transactions also supported
const ethersTransaction = {
  to: recipientAddress,
  value: ethers.parseEther("0.01"),
  serialize: () => "0x...", // Ethers serialization method
};

await sdk.signAndSendTransaction({
  walletId: wallet.walletId,
  transaction: ethersTransaction,
  networkId: NetworkId.ETHEREUM_MAINNET,
});

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Raw formats-hex strings and bytes

// Hex string transaction
await sdk.signAndSendTransaction({
  walletId: wallet.walletId,
  transaction: "0x02f8710182013685012a05f2008301388094742d35cc...", // Raw hex
  networkId: NetworkId.ETHEREUM_MAINNET,
});

// Raw bytes
const transactionBytes = new Uint8Array([1, 2, 3, 4, 5 /* ... */]);
await sdk.signAndSendTransaction({
  walletId: wallet.walletId,
  transaction: transactionBytes,
  networkId: NetworkId.SOLANA_MAINNET,
});

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Signing messages

const solanaSignature = await sdk.signMessage({
  walletId: wallet.walletId,
  message: "Please sign this message to authenticate",
  networkId: NetworkId.SOLANA_MAINNET,
});

// Unicode messages work too
const unicodeSignature = await sdk.signMessage({
  walletId: wallet.walletId,
  message: "Welcome to Web3! 你好世界", // Unicode text
  networkId: NetworkId.SOLANA_MAINNET,
});

const ethSignature = await sdk.signMessage({
  walletId: wallet.walletId,
  message: "Sign in to our dApp",
  networkId: NetworkId.ETHEREUM_MAINNET,
});

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Managing wallets

// Get all wallets for your organization with pagination
const result = await sdk.getWallets(20, 0); // limit: 20, offset: 0

console.log(`Total wallets: ${result.totalCount}`);
console.log("Wallets:", result.wallets);

// Get addresses for a specific wallet
const addresses = await sdk.getWalletAddresses(walletId);

// Get specific addresses by derivation path
const customAddresses = await sdk.getWalletAddresses(
  walletId,
  ["m/44'/501'/0'/0'", "m/44'/60'/0'/0/0"], // Solana and Ethereum
);

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Next steps

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Troubleshooting

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”organizationId and appId are required” error

Solutions:
  • Ensure all required config parameters are provided.
  • Check for typos in parameter names.

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”Failed to create wallet” error

Solutions:
  • Verify your organization credentials are correct.
  • Check network connectivity to the API endpoint.
  • Ensure your organization has wallet creation permissions.

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Transaction signing fails

Solutions:
  • Verify the wallet ID exists and belongs to your organization.
  • Check that the transaction is properly formatted.
  • Ensure you’re using the correct network ID.

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”Unsupported network ID” error

Solutions:
  • Use one of the predefined NetworkId enum values.
  • Check that the network is supported for your operation.

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Need help?

Support

Get help from developer support team

Example apps

Review the example apps

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Disclaimers

The Server SDK is a beta version, and Phantom will not be liable for any losses or damages suffered by you or your end users. Any suggestions, enhancement requests, recommendations, or other feedback provided by you regarding the Server SDK will be the exclusive property of Phantom. By using this beta version and providing feedback, you agree to assign any rights in that feedback to Phantom.