Node.js & TypeScript OKX API SDK
Unlock seamless access to the OKX exchange with a powerful, developer-first Node.js connector designed for reliability, scalability, and ease of use. This open-source SDK delivers full integration with all OKX REST APIs, robust TypeScript support, comprehensive end-to-end testing, and upcoming WebSocket capabilities — making it an ideal choice for algorithmic traders, fintech developers, and crypto enthusiasts building automated trading systems.
Whether you're developing a high-frequency trading bot, a portfolio tracker, or a market analysis dashboard, this SDK simplifies interaction with the OKX platform through clean, well-typed interfaces and production-ready tooling.
Core Features
- ✅ Full REST API coverage for spot, futures, margin, and options trading
- 🔜 WebSocket integration with auto-reconnect and subscription recovery (coming soon)
- 🧩 Native TypeScript support with detailed type definitions
- 🧪 Over 100 real-world end-to-end tests using live API calls
- 🌐 Browser compatibility via Webpack-built bundle
- 📦 Published on npm for easy installation and updates
Why Use This OKX SDK?
In the fast-moving world of cryptocurrency trading, having a reliable, well-documented API client is critical. Unlike minimal wrappers or reverse-engineered libraries, this OKX API SDK prioritizes correctness, maintainability, and developer experience.
Built for Reliability
Every API method is validated through real integration tests that make actual requests to the OKX servers. This ensures compatibility even when endpoint behaviors change subtly — reducing runtime surprises in production environments.
TypeScript-First Design
With full type declarations for most requests and responses, your IDE can provide intelligent autocomplete, parameter hints, and compile-time error checking. This dramatically reduces bugs and accelerates development time.
For example:
const client = new RestClient(apiKey, apiSecret, passphrase);
const accounts = await client.getAccounts(); // Returns strongly-typed Account[]Installation Guide
Getting started is simple with npm:
npm install --save okx-apiEnsure you have Node.js (v14+) installed. The package includes both TypeScript source and precompiled JavaScript in the lib/ directory for direct use in any Node.js project.
Setting Up API Credentials
Before making authenticated requests, generate your API keys from the OKX dashboard:
- Visit OKX My API page
- Create a new API key with required permissions (e.g., read-only or trading access)
- Store your API Key, Secret Key, and Passphrase securely
Never commit credentials to version control.
Using the REST Client
The SDK organizes methods by functional category — matching the structure of the official OKX API documentation. All requests return Promises and follow standard async/await patterns.
Request & Response Handling
The SDK automatically parses successful responses to return only the relevant data payload (under the data field), minimizing nested object handling.
Success Example:
{
"code": "0",
"msg": "",
"data": [{ "instId": "BTC-USDT", "last": "27000.50" }]
}→ Returns only the data array.
Error Handling:
If the response contains an error code (code !== "0") or HTTP status indicates failure, the entire response is thrown as an error, including code and msg fields. This enables precise error handling:
try {
const result = await client.placeOrder(order);
} catch (error) {
console.error('API Error:', error.code, error.msg);
}Check the APIResponse interface for complete typing details.
Browser Support via Webpack
Although primarily designed for Node.js, this SDK can be bundled for browser usage using Webpack:
npm install
npm run build
npm run packThe resulting bundle will be available in the dist/ folder. While most functionality remains consistent, some environment-specific limitations may apply (e.g., CORS policies enforced by browsers).
Note: Browser documentation is currently under development.
Project Structure Overview
Understanding the codebase layout helps contributors and advanced users navigate effectively:
src/— Main TypeScript source fileslib/— Compiled JavaScript (published to npm; do not edit directly)dist/— Webpack-generated browser bundlesexamples/— Practical usage demonstrations (contributions welcome!)
Explore the rest-client.ts file to see all available methods and their signatures.
Integration Best Practices
To maximize performance and stability:
- Reuse client instances instead of creating new ones per request
- Implement rate limiting awareness (OKX enforces API call limits)
- Use testnet environments during development
- Log errors with context for debugging
FAQ: Common Questions About the OKX API SDK
Q: Is WebSocket support available yet?
A: Not currently. WebSocket integration is actively in development and will include heartbeat monitoring, automatic reconnection, and subscription restoration after disconnects.
Q: Can I use this SDK in a browser-based trading dashboard?
A: Yes — with caveats. The SDK can be bundled via Webpack for browser use, but you must handle CORS and avoid exposing private keys client-side. Consider proxying sensitive operations through a backend service.
Q: How are breaking changes managed before v1.0?
A: While the project follows semantic versioning where possible, pre-1.0 versions may include breaking changes. Always review changelogs and test thoroughly after updates.
Q: Are there usage rate limits I should be aware of?
A: Yes. The SDK does not enforce rate limiting — it's your responsibility to comply with OKX’s documented request limits per endpoint. Exceeding these may result in temporary IP bans.
Q: How can I contribute to the project?
A: Contributions are welcome! Check the GitHub issues tab for known bugs, missing features, or documentation gaps. Pull requests are reviewed regularly.
Q: Is this library affiliated with OKX?
A: No. This is an independent open-source project created by developers for developers. It is not officially endorsed or maintained by OKX.
Keyword Integration Summary
This guide highlights essential crypto trading APIs, focusing on Node.js development, TypeScript integration, REST client functionality, browser compatibility, and secure API credential management — all centered around efficient interaction with the OKX exchange platform.
These core keywords naturally appear throughout to align with search intent while maintaining readability and technical depth.
Final Thoughts & Next Steps
This OKX API SDK stands out as one of the most thoroughly tested and developer-friendly tools for integrating with the OKX exchange. Its emphasis on type safety, real-world validation, and modular architecture makes it suitable for both learning projects and enterprise-grade applications.
As WebSocket support rolls out soon, the library will further empower real-time applications like live order book tracking, price alerts, and low-latency execution engines.
Stay updated by watching the repository on GitHub and contributing improvements. Whether you're building your first bot or scaling a trading infrastructure, this SDK provides a solid foundation for success in the dynamic world of digital asset trading.