Introduction to Lamassu

Lamassu, named after ancient Mesopotamian deities, offers powerful solutions for those looking to integrate cryptocurrency functions into their platforms. In this blog, we’ll cover various useful Lamassu API endpoints and provide detailed code snippets for each. Additionally, we’ll construct a simple app using the introduced APIs.

Getting Started

First, you need to have a Lamassu account and API key. The key plays a crucial role in every API call you make.

Installation

  npm install lamassu-api

Common Lamassu API Endpoints

Fetching Exchange Rates

  const Lamassu = require('lamassu-api');
  const api = new Lamassu('');

  api.getExchangeRates()
    .then(rates => console.log(rates))
    .catch(err => console.error(err));

Generating a New Wallet

  api.createWallet({ userId: '12345' })
    .then(walletDetails => console.log(walletDetails))
    .catch(err => console.error(err));

Checking Wallet Balance

  api.getWalletBalance({ walletId: '67890' })
    .then(balance => console.log(balance))
    .catch(err => console.error(err));

Sending Cryptocurrency

  api.sendCryptocurrency({
    walletId: '67890',
    recipientAddress: 'xyzaddress',
    amount: 0.01
  })
    .then(transaction => console.log(transaction))
    .catch(err => console.error(err));

Building a Simple App

Let’s create a simplistic app that fetches exchange rates and allows users to send cryptocurrency.

Fetch Exchange Rates and Display on Frontend

  const ratesButton = document.getElementById('checkRates');
  ratesButton.addEventListener('click', () => {
    api.getExchangeRates()
      .then(rates => {
        document.getElementById('ratesDisplay').innerText = JSON.stringify(rates);
      })
      .catch(err => console.error(err));
  });

Send Cryptocurrency

  document.getElementById('sendCrypto').addEventListener('submit', event => {
    event.preventDefault();

    const walletId = event.target.elements.walletId.value;
    const recipientAddress = event.target.elements.recipientAddress.value;
    const amount = event.target.elements.amount.value;

    api.sendCryptocurrency({ walletId, recipientAddress, amount: parseFloat(amount) })
      .then(transaction => alert('Transaction Successful!'))
      .catch(err => alert('Transaction Failed'));
  });

Conclusion

Lamassu provides a wide range of APIs that make integrating cryptocurrency functionalities into your app easier. The above examples are just a small glimpse into what you can achieve. Happy coding!

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