# Querying

If you have used GraphQL endpoints before, you can skip this section, which will explain which GraphQL clients you can use to start querying this data. We're going to recommend two libraries, but of course, there are many, none is the best, choose the best one for your solution.

1. Apollo client&#x20;
2. URQL&#x20;

For all of our code demos, we'll be using the Apollo client to show you how to call it using the client.

Great! Now that you know how to connect a client/server with a GraphQL public API, let's start talking about endpoints, starting with authentication.
