[NextJs] How to get idToken in a function or in a React component?

I’m working on a NextJs app and I need to send the idToken in each backend call. Is there an easy way to implement that? Here’s our app structure (extremely simplified):
We have a React component:

/* src/pages/components/MyComponent/MyComponent.tsx */

export const MyComponent: FC<MyComponentProps> = (...) => {
  const handleClick = async () => {
    await makeBackendCall(param1, param2);

  <Button onClick={handleClick} />

The backend call is here:

/* src/fetchers/webapi.ts */

export const makeBackendCall = (param1: string, param2: string): Promise<Response> => {
  fetch('http://some.url', {
    method: 'GET',
    headers: {
      /* *** THIS IS WHERE I NEED TO SEND idToken *** */

export const anotherCallWhichNeedsTheToken = () => {...}
export const andAnotherOne = () => {...}

How can I achieve this?

Hi @vtomic85,

Welcome to the Auth0 Community!

To obtain an ID token, make sure to initialize InitAuth0 with the scope=openid query parameter.

Alternatively, if necessary, you can directly pass the scope as an authorizationParams object to the ‘handleLogin’ method.


Please feel free to reach out if you have any questions.


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