In today's guide, we'll cover how to build a crypto Telegram bot using Python, that delivers real-time updates on cryptocurrencies. This bot is engineered not only to furnish you with the latest price of any selected cryptocurrency but also to supply additional data. This includes, but is not limited to, changes in price over a 24-hour period, market capitalization, trading volume, and even historical crypto price data. This wealth of information at your fingertips can empower you to make well-informed decisions in your cryptocurrency ventures.

Let's dive in!

Level of Functionality

In this section, we’ll break down the key functionalities of our crypto Telegram bot, and how these features will provide users with a comprehensive and real-time overview of the crypto market.

Fetching and displaying real-time crypto market data – Our bot is already equipped to fetch and display real-time market data for various cryptocurrencies. This includes data such as current price, market cap, volume, and price change percentage. We achieve this by making a GET request to the /coins/markets endpoint of the CoinGecko API.Displaying the 24h highest and lowest prices – The bot can fetch and display the highest and lowest prices of a specific cryptocurrency in the last 24 hours. This information can be crucial for users who are actively trading or monitoring specific cryptocurrencies. We fetch this data from the same /coins/markets endpoint.Fetching and displaying supply information – Our bot can fetch and display the circulating supply and total supply of a specific cryptocurrency. This information can be useful for users who want to understand the scarcity of a particular cryptocurrency. Again, this data is fetched from the /coins/markets endpoint.Fetching and Displaying Top Cryptocurrencies – The bot can fetch and display the top 10 cryptocurrencies based on market cap. This feature provides users with a quick overview of the leading cryptocurrencies in the market. We fetch this data by making a GET request to the same /coins/markets endpoint, but with specific parameters to order the results by market cap and limit the number of results.Fetching and Displaying On-Chain DEX Pool Data – Our bot also includes the functionality to fetch and display on-chain DEX crypto liquidity pool data. This feature allows users to search for pools on a network, providing valuable insights into the decentralized exchange (DEX) market. We achieve this by making a GET request to the /onchain/search/pools endpoint.💡 Pro-tip: Onchain endpoints are exclusively available for paid plan subscribers only. Unlock access to all 20 new /onchain endpoints for on-chain token and liquidity pool data for cryptocurrencies not listed on CoinGecko, by subscribing now. 

Prerequisites

Before we start, ensure you have the following:

Python 3.7 or higher installed on your system. Python is a powerful, easy-to-learn programming language that we will use to build our bot.A Telegram account. Telegram is a cloud-based instant messaging app where our bot will live.Basic understanding of Python programming. While this guide will be detailed, having a basic understanding of Python syntax and programming concepts will be beneficial.A text editor: You will need a text editor or an Integrated Development Environment (IDE) to write your code. Some popular options include Visual Studio Code, Sublime Text, and Atom.CoinGecko API: We will be using the CoinGecko API to fetch the crypto market data for cryptocurrencies. The CoinGecko API has a free Demo plan accessible to all users with a 30 calls/min rate limit and a monthly cap of 10,000 calls. Sign up for a CoinGecko account and apply for the Demo plan to get your complimentary Demo API key.We will be using CoinGecko API to fetch the market chart data for cryptocurrencies. The CoinGecko API has a free Demo plan accessible to all users with a 30 calls/min rate limit and a monthly cap of 10,000 calls.