Crypto API Glossary: A Comprehensive Guide to Key Terms

finance, currency, bitcoin

The world of crypto is brimming with innovation and opportunity, and one of the cornerstones of this digital revolution is the Crypto API (Application Programming Interface). Whether you’re a newcomer or a seasoned crypto enthusiast, understanding the fundamental terms related to crypto APIs is essential. In this guide, we’ll provide a comprehensive glossary of key terms to help you navigate the world of Crypto Exchange APIs.

What Is a Crypto Exchange API?

A Crypto Exchange API is a set of rules and protocols that enable different software applications to communicate with and access the features and data of a cryptocurrency exchange platform. These APIs act as intermediaries, facilitating the seamless exchange of information between the exchange, traders, and developers.

Now, let’s delve into the glossary: 

1. API Key

An API Key is a unique identifier that grants access to a user’s account on a crypto exchange. It’s required for authentication when using the exchange’s API services. 


A Representational State Transfer (REST) API is a type of API that uses standard HTTP methods (GET, POST, PUT, DELETE) to request and manipulate resources on the exchange server. It’s commonly used for retrieving market data and executing trades. 

3. WebSocket

WebSocket is a communication protocol that provides full-duplex communication channels over a single TCP connection. In the context of crypto APIs, WebSocket is used for real-time data streaming, including price updates and order book changes. 

4. Rate Limiting

Rate limiting is a mechanism imposed by exchanges to restrict the number of API requests a user can make within a specified time frame. It prevents abuse and ensures fair access for all users. 

5. Market Order

A Market Order is a type of order that is executed immediately at the current market price. It guarantees execution but does not specify the exact price at which the trade will occur. 

6. Limit Order

A Limit Order is an order to buy or sell an asset at a specific price or better. It may not be executed immediately, as it only gets filled when the market reaches the specified price. 

ChangeNOW Exchange API: A Valuable Resource for Crypto Businesses

For crypto businesses looking to integrate exchange functionalities into their crypto platforms, ChangeNOW offers a reliable Exchange API. It enables businesses to provide users with the ability to swap digital assets seamlessly. ChangeNOW’s API offers access to more than 900 cryptocurrencies and competitive rates, making it a valuable tool for crypto businesses.

In conclusion, the world of Crypto Exchange APIs can be complex, but with a solid understanding of the key terms, you’ll be better equipped to explore the possibilities and potential that APIs offer. Whether you’re a developer looking to create innovative solutions or a trader seeking to automate your strategies, a grasp of these terms is essential for success in the crypto space. Happy exploring!