Get Clearing Price Of Certain Auction

In this tutorial, you will learn how to use the Moxie Offchain REST API to fetch the clearing price of a certain auction in Node.js.

Pre-requisites

Before following the tutorial, make sure that your machine fulfills the following requirements:

• Node.js v.18+
• npm v.10+

In addition, make sure that you have node-fetch installed in your Node.js project. If you haven't installed it yet, you can do so by running the following command:

npm

npm install node-fetch

yarn

yarn add node-fetch

pnpm

pnpm add node-fetch

bun

bun install node-fetch

Step 1: Add REST API Call To The Code

You can easily call the Clearing Price API by sending a GET request providing the auctionId of the auction and specifying which chain you would like to fetch from on the chainId parameter by the following code snippet with node-fetch:

TypeScript

index.ts

import fetch from "node-fetch";

const options = {
  method: "GET",
  headers: {
    accept: "application/json",
  },
};

// The ID of the auction you want to fetch the clearing price for
const auctionId = 19;

/*
 * The Chain ID to fetch the data from:
 * - 84532 is for Base Sepolia Testnet
 * - 8453 is for Base Mainnet
 */
const chainId = 84532;

fetch(
  `https://batch-auction.airstack.xyz/api/clearing-price?auctionId=${auctionId}&chainId=${chainId}`,
  options
)
  .then((response) => response.json())
  .then((response) => console.log(response))
  .catch((err) => console.error(err));

JavaScript

index.js

const fetch = require("node-fetch");

const options = {
  method: "GET",
  headers: {
    accept: "application/json",
  },
};

// The ID of the auction you want to fetch the clearing price for
const auctionId = 19;

/*
 * The Chain ID to fetch the data from:
 * - 84532 is for Base Sepolia Testnet
 * - 8453 is for Base Mainnet
 */
const chainId = 84532;

fetch(
  `https://batch-auction.airstack.xyz/api/clearing-price?auctionId=${auctionId}&chainId=${chainId}`,
  options
)
  .then((response) => response.json())
  .then((response) => console.log(response))
  .catch((err) => console.error(err));

Step 2: Execute Your Code

Once you have your code ready, you can execute it by running the following command:

TypeScript

ts-node index.ts

JavaScript

node index.js

If it runs successfully, you should see the data returned in the terminal:

{
  "auction": {
    "minBuyAmount": "37320999999999999737856",
    "initialSupply": "37320999999999999737856",
    "id": "0",
    "clearingPrice": 1,
    "userId": "0"
  }
}

Congrats! 🥳🎉 You've just fetched the clearing price of a certain auction!

Developer Support

If you have any questions or need help with other use cases, feel free to join the /airstack Warpcast channel and ask your questions there.

Our team is always ready to help you with any questions you may have.