In the fast-evolving world of blockchain and Web3, infrastructure that empowers innovation is more critical than ever. At the forefront of this movement, OKX Web3 Wallet combines internal product excellence with external collaboration—driving open-source initiatives and building robust, developer-friendly APIs. These efforts are not just technical upgrades; they're foundational steps toward a more transparent, interoperable, and secure Web3 ecosystem.
By opening up its codebase and offering comprehensive APIs, OKX Web3 Wallet lowers the barrier to entry for developers worldwide. This enables seamless integration, accelerates development cycles, and fosters a culture of shared learning and co-creation—ultimately advancing the entire crypto infrastructure landscape.
While features like APIs often operate behind the scenes—unseen by everyday users—they form what we call the "invisible infrastructure" of Web3 platforms. Despite their low visibility, these components are vital to scalability, security, and user experience. With limited public resources available on OKX Web3 Wallet’s API capabilities, this article serves as the first in-depth exploration of its API framework, designed to help developers turn ideas into real-world applications.
This is Part 1 of the OKX Web3 Invisible Infrastructure Series, focusing on technical capabilities. In a future installment, we’ll dive into the stories and insights from the team behind the API development.
Understanding the OKX Web3 Wallet API Framework
An API (Application Programming Interface) acts as a bridge between software systems, enabling them to communicate, exchange data, and leverage existing functionalities without rebuilding from scratch. In Web3, APIs streamline complex blockchain interactions—making development faster, safer, and more efficient.
As a leading all-in-one Web3 gateway, OKX Web3 offers OnchainOS, a multi-chain Web3 development engine that standardizes access across chains and services. This comprehensive solution reduces development time and costs while providing modular access to essential components:
- Non-custodial wallet infrastructure
- DEX aggregation
- NFT and Runes marketplaces
- DeFi protocol integration
- On-chain data and liquidity solutions
Whether you're building a Web3 wallet, a decentralized exchange, or a DeFi platform, OnchainOS provides the tools to accelerate your project.
👉 Discover how OKX Web3 APIs can power your next breakthrough application.
For developers ready to explore, OKX offers detailed, visually supported API documentation:
https://www.okx.com/join/8265080zh-hans/web3/build/docs/waas/okx-waas-what-is-waas
The OKX Web3 Wallet already supports 100+ public blockchains and delivers a unified experience across mobile apps, browser extensions, and web platforms. Its ecosystem spans five core areas: wallet management, DEX aggregation, NFT marketplace, DeFi services, and DApp discovery—with added support for Bitcoin Ordinals and Runes trading.
Let’s explore how each major module leverages APIs to empower developers.
Wallet API: Build Multi-Chain Wallets in Minutes
At the heart of any Web3 experience lies the wallet. The Wallet API provides the foundational technology for non-custodial wallet development, enabling rapid integration across diverse use cases:
- Multi-chain Web3 wallets
- Embedded DApp wallets
- Exchange wallet services
- Custom DeFi interfaces
Key Features of Wallet API
- Multi-chain address aggregation with support for asset tracking across millions of addresses
- Broad network compatibility – seamless onboarding for 60+ networks including EVM, Solana, TRON, and BTC ecosystems (including Ordinals)
- High availability & stability – backed by real-time monitoring and fail-safe systems
Developers can set up a fully functional wallet in just three steps, with future enhancements including MPC (Multi-Party Computation) and Account Abstraction (AA) smart wallet support.
Core Functional Modules
1. Account Management
Unlike basic single-address queries, the Wallet API supports structured multi-address subscriptions. Two account types are available:
- Wallet Account: Requires message signing for authentication; allows custom token addition and transaction initiation
- Observation Account: No signing required; displays all tokens indexed by OKX; read-only access
API capabilities include:
- Create and manage wallet accounts
- Aggregate observation addresses
- Update or delete accounts
- Query account lists and associated addresses
2. Asset Management
Effortlessly track digital assets across chains:
- Add or remove subscribed tokens
- Retrieve individual or total asset balances
- Customize token lists (wallet accounts only)
Observation accounts pull data only for pre-supported tokens.
3. Transaction Management
Full control over on-chain operations:
- Fetch gas price, gas limit, nonce
- Validate addresses
- Construct, sign, and broadcast transactions
- Query transaction history by hash, order ID, or address
Supports both EVM account-based models and UTXO-based networks like Bitcoin.
4. Additional Utilities
- Query UTXO sets and chain-specific parameters
- Use Webhooks to subscribe to real-time blockchain events (blocks, transactions)
- Batch-create up to 20 subscriptions at once
DEX Aggregator API: Smarter Swaps & Cross-Chain Trading
The OKX DEX Aggregator is a powerful multi-chain and cross-chain routing engine that connects over 25 cross-chain bridges, 40+ public chains, and 400+ DEXs. Powered by X Routing, it delivers optimal pricing with zero trading fees and enhanced liquidity.
Core Capabilities
The API enables developers to integrate advanced trading functionalities into wallets, DApps, or DeFi platforms with ease. With response times under 100ms, it ensures speed, reliability, and cost-efficiency.
Key endpoints include:
- Swap API
- Bridge API
- Limit Order API
1. Swap API
Aggregates liquidity from top DEXs like Uniswap, Curve, and Balancer. Uses intelligent order splitting to:
- Maximize liquidity depth
- Minimize slippage
- Optimize final trade price
Developers can retrieve:
- Supported chains and token lists
- Liquidity pool data
- Price quotes and transaction payloads
2. Bridge API
Integrates leading cross-chain bridges including Wormhole, Stargate, CCTP, and Across. The X Routing algorithm evaluates multiple paths—such as:
- Source swap → Bridge → Target swap
- Direct bridge execution
It compares fees, slippage, and final output to deliver the best possible rate.
API functions allow querying:
- Supported bridge routes
- Path details
- Transaction status
- Authorization data
3. Limit Order API
Enables users to place orders at desired prices across decentralized exchanges.
Key advantages:
- No slippage for order creators
- Partial fills supported
- Orders executed when market conditions match
Developers can:
- Create and query limit orders
- Retrieve supported chains and tokens
- Integrate liquidity directly into the aggregator
👉 Unlock powerful trading logic with OKX Web3’s DEX Aggregator API.
Marketplace API: Unified Access to NFTs, Runes & Ordinals
OKX supports a full suite of digital asset marketplaces across 26 major blockchains, including Bitcoin and Ethereum.
1. NFT Marketplace API
A decentralized NFT aggregation platform combining OpenSea, Magic Eden, LooksRare, and others. Offers:
- Multi-marketplace listing in one click
- Lower fees and higher liquidity
- Real-time on-chain data feeds
API features:
- Fetch NFT and collection details
- Query listings, bids, and purchases
- Monitor order books across platforms
2. Runes Market API
As the first mobile platform supporting Rune trading, OKX enables batch purchases and etching with zero platform fees.
API access includes:
- Collection metadata
- Transaction history
- Wallet asset queries
- Order submission endpoints
3. Ordinals Market API
The world’s largest marketplace for BRC20 tokens and BTC NFTs—fully decentralized with no service fees.
Developers can:
- Create and submit Ordinals listings
- Retrieve inscription assets and collections
- Access transaction models and historical data
DeFi API: One Integration for 80+ Protocols
OKX Web3 DeFi is a leading aggregation platform connecting over 80 DeFi protocols across 15+ networks, including Aave, Compound, Yearn, and Uniswap.
The DeFi API simplifies user interaction with yield-generating products through standardized data flows.
Key Functions
Information Queries
- Protocol list
- Token list
- Product details and network support
Estimation & Calculation
- Projected returns for deposits (stake/lock)
- Redemption value calculations
Transaction Execution
Generate secure call data for:
- Approvals before trading
- Deposit (subscription) transactions
- Withdrawal requests
- Reward claim operations
User Data Access
- View current holdings
- Check token balances
- Track pending redemption orders
This unified interface allows developers to embed full DeFi functionality without managing multiple protocol integrations.
Innovation at Scale: Building the Future Together
Open APIs are more than technical tools—they represent a philosophy of transparency, collaboration, and shared progress. By exposing its infrastructure through well-documented APIs, OKX Web3 Wallet invites global developers to co-create the next generation of Web3 applications.
This approach fosters:
- Faster innovation cycles
- Greater system interoperability
- Stronger community trust
- Industry-wide standardization
From DeFi protocols to NFT marketplaces, developers can build on a stable, scalable foundation that handles complexity behind the scenes.
Moreover, open access enhances platform credibility. When developers can see how systems work—and verify their security—they’re more likely to adopt and contribute to the ecosystem.
In the long term, widespread API adoption enables deeper integration between platforms, forming a truly interconnected blockchain landscape—one where value, data, and identity flow freely across chains and applications.
As OKX continues to expand its API offerings—including MPC wallets, AA accounts, and advanced analytics—the vision remains clear: Today’s infrastructure investments are paving the way for tomorrow’s breakthroughs.
Frequently Asked Questions (FAQ)
Q: What makes OKX Web3 Wallet API different from other Web3 APIs?
A: OKX offers one of the most comprehensive multi-chain API suites in the industry—covering wallets, DEX aggregation, NFTs, Runes, Ordinals, and DeFi—all under a unified architecture with high performance and low latency.
Q: Is there a cost to use OKX Web3 APIs?
A: Many core functionalities—including DEX aggregation—are free to use. Always check the official documentation for usage limits or enterprise plans.
Q: Which blockchains are supported?
A: Over 100 public chains are supported, including Ethereum, Solana, TRON, Bitcoin (for Ordinals/Runes), Polygon, Arbitrum, and more.
Q: Can I use the API for production applications?
A: Yes. The APIs are designed for both prototyping and production deployment with high availability guarantees.
Q: How do I get started with integration?
A: Visit the official documentation portal for detailed guides, code samples, authentication methods, and sandbox environments.
Q: Does OKX support Account Abstraction or MPC wallets via API?
A: While current support focuses on standard wallet functions, MPC and AA capabilities are planned for future releases.
👉 Start building today—harness the full power of OKX Web3 APIs.