Web3 Wallet API Documentation: Real-Time Crypto Price & Blockchain Data Services

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In today’s fast-evolving Web3 ecosystem, developers need reliable, scalable, and secure tools to integrate blockchain functionality into their applications. Whether you're building a decentralized finance (DeFi) platform, a digital wallet, or an NFT marketplace, access to real-time cryptocurrency pricing, comprehensive token data, and seamless chain interaction is essential.

This guide explores the powerful Wallet API services offered through OKX OS — a leading Web3 infrastructure platform designed for developers who demand precision, speed, and global blockchain coverage.

What Is OKX OS?

OKX OS is a Wallet-as-a-Service (WaaS) solution that empowers developers to embed non-custodial wallet capabilities directly into their apps. It provides a full suite of APIs for managing wallets, querying blockchain data, broadcasting transactions, and retrieving real-time market information — all with enterprise-grade security and scalability.

With OKX OS, you can streamline Web3 integration without needing deep blockchain expertise. From wallet creation to cross-chain swaps, the platform supports every stage of user interaction in a decentralized environment.

👉 Discover how easy it is to launch your Web3 project with powerful API tools.

Core Features of the Wallet API

The Wallet API is engineered for performance and flexibility. It enables developers to fetch critical on-chain and off-chain data seamlessly. Key capabilities include:

These features are accessible via clean, well-documented RESTful endpoints, making integration straightforward across web, mobile, and backend environments.

Supported Blockchains

The API supports a wide range of major blockchains, including Ethereum, Bitcoin, BNB Chain, Solana, Arbitrum, Optimism, Polygon, and more. This multi-chain compatibility ensures your application can serve users across ecosystems without siloed experiences.

You can retrieve the full list of supported networks programmatically using the Get Supported Blockchain endpoint — ideal for dynamic UI rendering or routing logic in multi-chain dApps.

Real-Time & Historical Crypto Price Data

One of the most valuable components of the Wallet API is its crypto price information service, which delivers accurate, up-to-the-second market data for thousands of tokens.

Fetching Live Market Prices

Using the Get Current Price List endpoint, developers can pull real-time prices for multiple cryptocurrencies in a single request. Prices are normalized across exchanges and updated frequently to reflect true market conditions.

This feature is perfect for:

All responses include standardized fields like base currency, quote currency, price timestamp, and source reliability indicators.

Accessing Historical Price Trends

For analytical use cases such as portfolio performance tracking or backtesting strategies, the Get Historical Price API returns time-series price data at customizable intervals (hourly, daily, weekly).

You can specify:

This enables rich visualizations like price charts and trend analysis directly within your app.

👉 Start integrating live crypto pricing into your application today.

Comprehensive Token & Project Information

Beyond pricing, understanding a token's fundamentals is crucial for user trust and informed decision-making.

The Get Token Detail API provides in-depth project-level metadata such as:

This data helps developers build transparent interfaces where users can verify token legitimacy before interacting — reducing risks associated with scams or impersonation.

Unlike other services limited by network scope, this endpoint operates independently of blockchain support restrictions, ensuring broader token coverage even for emerging or cross-chain assets.

On-Chain Data Querying by Address & Account

Understanding user holdings and transaction behavior is central to any wallet or DeFi interface.

The Wallet API offers two primary methods:

1. Address-Based Asset Lookup

Use the Address Dimension Asset Query to scan any public blockchain address and return its current token balances — including fungible tokens (ERC-20, BEP-20) and NFTs.

This is ideal for:

2. Account-Centric Asset Management

For applications managing multiple user identities or sessions, the Account Dimension Asset Query organizes assets under managed accounts, enabling better session control and permission layering.

Combined with secure key management and signing SDKs, this allows for granular access control while maintaining non-custodial principles.

Transaction History & Broadcasting

Transparency builds trust. The Transaction History API lets you retrieve complete inbound and outbound transaction records for any address or account.

Each entry includes:

For outgoing actions, the Transaction Broadcast API securely relays signed transactions to the network. Paired with the Signing SDK, developers can implement secure offline signing workflows — keeping private keys out of server environments.

Additional Developer Tools & Resources

Beyond core wallet functions, OKX OS offers extended APIs for advanced Web3 use cases:

DEX Aggregation & Cross-Chain Swaps

Leverage the DEX API to enable best-rate token swaps across decentralized exchanges. With built-in route optimization and slippage protection, users get maximum value per trade.

The Cross-Chain API extends this further by enabling seamless asset transfers between different blockchains — solving fragmentation in the multi-chain era.

NFT & Ordinals Market APIs

Support growing digital collectible ecosystems with dedicated endpoints for:

These tools are essential for marketplaces, profile systems, and community platforms focused on digital identity and ownership.

DeFi Integration Made Simple

The DeFi API gives direct access to liquidity pool data, staking positions, yield metrics, and protocol analytics — helping you build next-gen financial dashboards or automated yield optimizers.

Frequently Asked Questions (FAQ)

Q: Do I need an OKX account to use these APIs?
A: Yes, developers must register on OKX Web3 Build to obtain API keys and access documentation. Registration is free and includes rate-limited sandbox access for testing.

Q: Are there usage limits or costs?
A: Free tiers are available with generous request quotas. High-volume applications can apply for premium plans with enhanced throughput and priority support.

Q: How often is price data updated?
A: Real-time price feeds are refreshed every 10–30 seconds depending on volatility and asset popularity.

Q: Can I use this in mobile apps?
A: Absolutely. The APIs are platform-agnostic and work seamlessly in iOS, Android, React Native, Flutter, and other frameworks.

Q: Is sensitive user data stored on OKX servers?
A: No. Wallet-as-a-Service maintains a non-custodial model — private keys and sensitive credentials remain under developer/user control at all times.

Q: Where can I find code samples and SDKs?
A: Full code repositories, client SDKs (JavaScript, Python, Java), and interactive API playgrounds are available in the official resources section.

Final Thoughts

As Web3 adoption grows, so does the demand for robust backend infrastructure. The OKX OS Wallet API suite delivers everything developers need to create secure, feature-rich decentralized applications — from real-time crypto pricing to deep on-chain analytics.

With strong documentation, global chain support, and developer-first design, it's never been easier to bring blockchain innovation to life.

👉 Accelerate your Web3 development with powerful, ready-to-use APIs.