Solana: Check if dexscreener token is paid on-chain

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Checking if a token pays DEX screener on-chain: A solution for high-volume use cases

As a Solana developer, you are probably familiar with the fast-paced world of decentralized exchanges (DEXs) and liquidity provision. However, when it comes to checking in real-time if a token pays DEX screener fees, the situation can get complicated. In this article, we explore the limitations of traditional APIs and provide an alternative solution for high-volume use cases.

The Traditional API Approach

When using the Dex Screener API provided by Solana, you are limited to 1 request per second (req/s). This means that if you need to perform multiple checks in a short period of time, you will not be able to do so within the allotted time frame. This limitation makes it difficult for high-volume use cases, such as frequent token price fluctuations or large-scale trading activity.

The solution: using Solana’s built-in events

Solana: Check if a token dexscreener is paid on chain

A better solution is to leverage Solana’s built-in events feature. In particular, the solana-slip library provides an API that allows you to listen on-chain for DEX screener events. This approach allows you to get real-time updates on token price and liquidity information without relying on traditional APIs.

Example code: Listing a token with Solana

To demonstrate how to use solana-slip, let’s create a simple example that lists a token using the Dex Screener API:

npm install solana-slip

//Create a new Slack client instance

const slack = require('slack');

const { Client } = require('lack');

//Set up your Slack credentials

const SlackToken = "Your Slack Token";

const SlackChannel = 'your channel name';

// Initialize the Slack client instance

const slackClient = new Client({ token: SlackToken });

async function listToken() {

// List a token using the Dex Screener API

const dexScreenerUrl = "

const txHash = await getDexScreenerTxHash(dexScreenerUrl);

// Get the latest price of the token on the chain

const latestPrice = await getLatestPrice(token, txHash);

// Send a Slack message with the latest price

const slackMessage = {

Channel: SlackChannel,

Text: "The current price of ${token} is: $${latestPrice}",

};

// Post the message in the Slack channel

await slackClient.postMessage(slackMessage);

}

ListToken();

In this example, we create a new Slack client instance and use it to list a token using the Dex Screener API. We then get real-time updates on the token price via Solana’s built-in events feature.

Benefits of using Solana’s built-in events

The benefits of using solana-slip include:

  • High availability: Get real-time updates even when the API is down or slow.
  • Scalability: Perform multiple checks without relying on traditional APIs.
  • Flexibility: Customizable event listeners for tailored use cases.

In summary, while the Dex Screener API provides a convenient entry into Solana’s DEX ecosystem, it has limitations for high-volume use cases. By leveraging Solana’s built-in event functionality via solana-slip, you can leverage real-time price updates and flexible event listeners without relying on traditional APIs.

Next steps

To take your solution to the next level, consider exploring other libraries and tools that provide DEX screener functionality, such as:

  • solana-liquidity-pro-provider
  • dex-logger
  • solana-api

Combining these solutions with solana-slip will allow you to create powerful on-chain DEX solutions that meet market demands.

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