Next step, is to make a variable which would take a GraphQL query and execute it in Bitquery’s API through the endpoint.

app.js

export default function App() {
  const { data, isLoading, error } = useQuery("bitcoin", () => { //launches
    return fetch(endpoint, {
      method: "POST",
      headers: { 
        "Content-Type": "application/json",
        "X-API-KEY": "YOUR API KEY"
      },
      body: JSON.stringify({ query: QUERY }) // ({ QUERY })
    })
      .then((response) => {
        if (response.status >= 400) {
          throw new Error("Error fetching data");
        } else {
          return response.json();
        }
      })
      .then((data) => data.data);
  });