Complete Guide to Blockchain ERC20 Address Queries: Comparison and Practical Use of the Three Major API Tools

Want to quickly check all ERC-20 tokens held by a blockchain address? Whether you’re a developer, business user, or an organization conducting on-chain analysis, mastering the correct method for ERC-20 address queries is crucial. This article compares the three major API platforms—Chainbase, Alchemy, and Moralis—to help you find the most suitable ERC-20 address query solution.

Why Do You Need ERC-20 Address Queries? Application Scenarios

Checking your tokens within a wallet app is simple, but when law enforcement, companies, or researchers need to verify someone else’s ERC-20 token holdings, they require specialized tools. ERC-20 address queries not only help developers build on-chain data applications but are also widely used in asset tracking, risk assessment, and compliance monitoring.

Traditional methods involve manually browsing blockchain explorers, which is inefficient for large-scale or frequent queries. The solution is to call Application Programming Interfaces (APIs) to automatically retrieve detailed information such as all ERC-20 token balances, names, symbols, and more for a specified address. The three platforms introduced here all provide mature API interfaces that significantly improve ERC-20 address query efficiency.

Chainbase: Lightweight On-Chain Data Query Solution

Chainbase is a Web3 infrastructure provider offering developers easy access to blockchain data via APIs. Its features include simple operation, quick integration, and it’s especially suitable for projects that need to get started rapidly.

Five Steps to Get Started Quickly

First, register a free account on the Chainbase website and log in. In the console, create a new project; the system will automatically assign an API key. This key is essential for all subsequent API calls.

Next, prepare your development environment. Chainbase supports multiple programming languages. For example, in JavaScript, install the Axios library to handle HTTP requests: run npm install axios --save in your terminal.

Then, write your query script. Using Vitalik Buterin’s address (0xd8da6bf26964af9d7eed9e03e53415d37aa96045) as an example, call the getAccountTokens API to retrieve the top 5 ERC-20 tokens held on the Ethereum mainnet at that address. The code will use Axios to send requests to Chainbase.

By filling in the contract_address field, you can also query detailed information about specific tokens. Running node <filename>.js will output complete balance data, including tokens like Ethereum, Uniswap V2, dYdX, etc.

Advantages of Chainbase include a lightweight architecture, clear API documentation, and generous free quotas, making it especially suitable for small to medium-sized projects’ ERC-20 address queries.

Alchemy: Enterprise-Level Web3 API Platform

Alchemy targets enterprise applications, offering more powerful data processing capabilities and more stable service guarantees. If your project requires handling large-scale queries or high availability, Alchemy is a better choice.

Full Deployment Process

First, install the basic environment. On your local machine, install Node.js (a cross-platform open-source JavaScript runtime) and NPM (Node Package Manager, providing a rich library ecosystem).

Second, register an account on the Alchemy website. After logging in, create a new app in the dashboard, select “Ethereum” as the blockchain and “Mainnet” as the network. Click “View Key” to note the HTTP URL and API key.

Third, initialize your Node.js project. Create a project directory and install the Alchemy SDK or use Axios or Fetch API as alternatives. The Alchemy SDK provides direct access to underlying data models, while Axios and Fetch are general HTTP request libraries. After initialization, your main code will be in main.js.

Fourth, start querying ERC-20 addresses. Call the getTokenBalances method with the wallet address as a parameter. The script will return a list of tokens, each including contract address and hexadecimal balance.

To further optimize results, use getTokenMetadata to retrieve token name, symbol, and decimal precision. Combining these methods can automatically filter out zero-balance tokens and convert balances into human-readable formats, greatly improving data usability.

Advantages of Alchemy include enterprise-grade reliability, comprehensive features, and suitability for large-scale applications.

Moralis: All-in-One Web3 Integration Solution

Moralis is renowned for its enterprise-grade Web3 API, dedicated to seamlessly integrating Web3 functionalities into any tech stack. If you need comprehensive blockchain data support, Moralis might be the best choice.

Three Steps to Rapid Implementation

First, set up your environment and account. Install Node.js v14 or higher and NPM, set environment variables, and run npm install to install dependencies. Create a free account on Moralis, log in to the dashboard, and find your “Web3 API Key” under “Settings” > “Secrets” and copy it.

Second, perform ERC-20 address queries. Moralis offers the getWalletTokenBalances endpoint, which requires two parameters: the address (specifying the wallet) and the chain (e.g., Ethereum). Calling this endpoint returns all ERC-20 tokens held by that address on the specified blockchain.

Write JavaScript code to initialize the Moralis SDK, authenticate with the API key, and query all token balances associated with the specified Ethereum wallet address.

Third, run the script to see results. Executing the code in a JavaScript environment will output detailed data in JSON format. This response includes each token’s contract address, name (e.g., ApeCoin, Wrapped Ether), symbol, logo URL, decimal precision, and wallet balance.

Advantages of Moralis include high feature integration, well-structured data, and rapid development support.

Tool Selection Advice and Best Practices

When choosing an ERC-20 address query tool, consider your specific needs:

Scenario 1: Rapid Prototyping → Recommend Chainbase for quick setup with no learning curve.

Scenario 2: Large-Scale Production Environment → Recommend Alchemy for higher stability and fault tolerance.

Scenario 3: Full Web3 Ecosystem Support → Recommend Moralis for the most comprehensive features.

Regardless of the platform chosen, manage your API keys securely, set reasonable request rate limits, and monitor API quotas regularly. For production, it’s advisable to cache query results locally to reduce unnecessary API calls, improve response speed, and save costs.

Using these three platforms for ERC-20 address queries allows you to flexibly meet the needs of various scenarios, from personal projects to enterprise applications.