Signature SDK: Wallet API for Web3 Applications

Introduction

The Signature SDK provides essential tools for developers to integrate secure wallet functionalities into Web3 applications. This guide covers the core features, quick-start steps, and advanced use cases for the Signing SDK.

Key Features

• On-Chain Information Query: Retrieve real-time blockchain data.
• Wallet Account Management: Create, import, and manage wallet accounts programmatically.
• Transaction Broadcasting: Send signed transactions to supported networks.
• Multi-Language SDKs: JavaScript and Go SDKs for flexible development.

Quick Start

1. Install the SDK:
   Choose your preferred language:

   • JavaScript SDK
   • Go SDK

2. Initialize:

   const { PrivateKeyWallet } = require('@okx/web3-wallet');
   const wallet = new PrivateKeyWallet('YOUR_PRIVATE_KEY');

3. Query Blockchain Data:
   Use the getBalance method to fetch account balances.

Advanced Use Cases

1. Transaction Signing

Sign and broadcast transactions with built-in gas estimation:

import (
   "github.com/okx/go-wallet-sdk/privatekey"
)
wallet := privatekey.NewWallet("0xYOUR_PRIVATE_KEY")
txHash, err := wallet.SendTransaction(txParams)

2. Cross-Chain Swaps

Leverage the DEX API for cross-chain liquidity aggregation.

👉 Explore DEX API Integration

Supported Networks

• EVM Chains: Ethereum, BSC, Polygon.
• Non-EVM: Bitcoin Ordinals, Solana.

FAQ Section

Q1: How secure is the Signing SDK?

A: All operations occur client-side; private keys never leave the user’s device.

Q2: Can I use this for enterprise applications?

A: Yes, the SDK is designed for both indie developers and large-scale deployments.

Q3: Is there a fee for using the Wallet API?

A: No—only standard blockchain gas fees apply.

Resources

• API Error Codes
• Network Status Dashboard

Keywords: Web3 Wallet API, Signature SDK, Transaction Signing, JavaScript SDK, Go SDK, DEX Integration, Cross-Chain Swaps.

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