Table of contents

<aside> 💡 WARNING: Since the recording of this HTTP outcalls have become significantly cheaper.

</aside>

Intro

Underneath is a recording explaining HTTPS outcalls and the code in this document in detail. You can find other helpful resources here.

The slides can be found here.

The repository containing the final outcome of this guide can be found here.

https://youtu.be/eKD5Ug6fXIw

What is our goal?

• we want to leverage the new HTTPS outcall feature to make calls from a canister to the Coinbase API to get the historic ICP price.

Coding

prerequisites

• install the latest version of dfx

getting started

• run dfx new --no-frontend price_feed to create a new project, we don’t use a frontend thats why we use the flag
• cd into price_feed
• we are going to use VSCode for this tutorial
• make sure you have the Motoko extension installed
  • this comes with code formatting, automatic imports, syntax highlighting and others