How to query 0xAPI

How to perform a query on a REST endpoint to retrieve onchain data

In this guide, we will walk you through the steps to perform a query on a REST endpoint to retrieve onchain data.

Prerequisites

Before you begin, make sure you have:

• A registered Ormi account
• An API key
• A REST client (e.g., curl, Postman, or any HTTP client)

Performing a query to fetch ERC-20 transfers

Here is an example of a query to retrieve the token balance of a wallet address on the Ethereum mainnet.

Step 1: Identify the endpoint URL

Check out the API Reference.

Step 2: Get the required variables

Copy and paste the required endpoint path and query parameters into the editor, then click “Send” to make the request.

Step 3: Query with a third-party tool

You may use any third-party tool such as curl or Postman to directly query the endpoint.

Step 4: Check out code snippets

The API Reference page also provides handy code snippets for various programming languages to help you get started.