How to Use ETHEREUM NODE API? Benefits and Cases

For those new to the world of blockchain development, understanding how to interact with networks like Ethereum is crucial. This article will provide a beginner-friendly guide to using the Ethereum Node API, explain its benefits, and discuss various use cases. Additionally, we will make a brief comparison with Algorand RPC to illustrate differences and help you understand when one might be more suitable than the other.

Exploring the Functionality of Blockchain APIs

APIs (Application Programming Interfaces) describe a collection of protocols that when used by different software instances help them share data. In the context of blockchain, APIs provide a more user-friendly and standardized way to interact with cryptocurrency nodes.

​​They serve as a mediator between users, developers, or web apps to interact with nodes without needing to understand the low-level details of the decentralized protocols. APIs abstract the complexities and provide simpler methods to perform tasks

How APIs Work

RPC nodes are essential servers that support APIs. When a user (client) makes a request to an API endpoint, this request is translated into an RPC call. This interaction follows a structured format, ensuring that both the server and the client understand the requests and responses.

To give an actual example, let’s see how it works with Algorand RPC.

  1. A developer sends a request to an ALGO RPC node. This request could be anything from querying the current state of an account to creating a new transaction.
  2. Assuming we need to check the balance of a particular ALGO account, we channel our request to “GET /v2/accounts/{address}” endpoint providing the actual address in the parameters field.
  3. Algorand RPC node receives this call and performs the necessary actions on the blockchain. In this case, simply skims through its locally stored copy of the data to find the required information.
  4. Then, the node sends the response back to the application, providing the requested data and confirmation of the action taken.

Below is an example of the response for this kind of a call.

Alternatively, developers can create an application that sends these requests to any desired network. Many DeFi applications, for example, rely on the Ethereum Node API to automate functionalities like swapping tokens, lending, and borrowing.

 Diversity of API Protocols

Blockchain nodes can operate with different API methods, including JSON-RPC, REST, and WebSockets, among others. Each of them allows developers to interact with blockchain nodes in different ways:

  • JSON-RPC: Enables detailed and fine-grained control over node operations. It’s typically used for backend services that need to perform complex tasks.
  • REST: Provides a simpler interface for interacting with nodes, often used for frontend applications or simpler backend services.
  • WebSockets: Allows applications to receive real-time data streams from the blockchain, ideal for applications that need immediate updates, such as trading platforms or monitoring tools.

The Ethereum Node API, often accessed via the JSON-RPC interface, provides a comprehensive set of functionalities for developers to interact not only with the Ethereum network, but also a collection of other compatible networks that support similar APIs.

How to Access Ethereum Node API

To begin using the Ethereum API for development, developers need access to an ETH node. GetBlock, a multi-chain node service, is removing the complexity of connecting dApps to blockchains by hosting RPC nodes for over 50 chains, all major Layer 1 chains like Ethereum, Solana, and Algronad RPCs covered.

The platform aids in deploying apps faster as there’s no need to spin up a whole node in-house to have a gateway to the blockchain. Private (dedicated) node service is a flagship product of the service, where the team spins up a node specifically set up for your project needs and grants access to an unlimited number of requests. Aside from that, every user’s account gets immediately topped up with 40,000 free daily requests to trial the service.


Understanding and utilizing Ethereum Node API and Algorand RPC is crucial for developers working in the blockchain space. These tools provide the necessary interfaces to interact with crypto networks, enabling the creation of innovative and robust dApps. While Ethereum Node API offers extensive capabilities for a wide range of applications, Algorand RPC provides unique features suited to its efficient consensus and transaction mechanisms. Mastering both can significantly enhance a developer’s ability to build and maintain cutting-edge blockchain solutions.

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