setAppMetadata during Pre-User-Registration using passwordless connections

I’ve been having issues trying to populate metadata in a pre-user-registration action using a passwordless sms connection. I want to allow user signups but also check to see whether the user’s phone number has already been whitelisted on our application database with an invite. I stumbled across this topic explaining that it’s a known bug that api.user.setAppMetadata doesn’t fire during pre-registration using passwordless connections, which leads me to think that this is also true for setUserMetadata: Adding user to default role, passwordless flow - #4 by mitchell.anderson

Is this still an active issue, and if so, is there any information on when a fix might be coming? I don’t have a firm idea of how to alternatively implement this. Perhaps with an older hook or rule?

Hi @bkensey,

Welcome to the Auth0 Community!

I have just tested the Pre-User Registration Hook and can confirm your observations.

Currently, this is a known bug and included in our Engineers backlog to fix once our code freeze has lifted. The freeze is anticipated to be lifted early in 2022.

For now, I recommend using a Rule or Action as a workaround. Take a look at this Rule and Action examples for details.

Hoped this answers your questions.

Please let me know if there’s anything else I can do to help.


To be clear, I was trying to use the pre registration action, not the hook, but after time spent today on this it appears that the hook is also affected by this bug.

Hi @bkensey,

Thank you for your clarification.

I should have been clearer that both Actions and Hooks share the same functionality and are affected by this issue.

Nonetheless, I have reported the issue to our Engineers, and we expect it to be fixed after the code freeze is removed.


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Is this issue still open?

Hey there @rueben.tiow !

Would you be able to follow up on that? Thanks!

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Yes, thank you!
I just invested more time into debugging my issue.
It seems like the Action is executed (I see Real-time Webtask Logs)

But when the user is created, the app_metadata is empty.

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This is essentially my action:

exports.onExecutePreUserRegistration = async (event, api) => {
  const adminIds = await getFamilyAdmins(event); // returns an array of ids

  for (const adminId of adminIds) {
    const familyKey = `family_${adminId}`;

    console.log(adminId);   // this gets executed

    api.user.setAppMetadata(familyKey, "value");

But in the Auth0 Management Console, app_metadata is still an empty object { }

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Hi @severin1,

Thank you for your response.

I have just tested the api.user.setAppMetadata() method in a PreUserRegistration Action flow and did not encounter any issues. I could successfully set the app_metadata for the user.

After testing your script myself, I could set the user app_metadata and the result is below:

Please note that I used the integers 1 to 5 for my array of IDs for testing. Everything works as expected.

With that, I can confirm that the PreUserRegistration Action flow can set the app_metadata and that your script has no issues.

Now, could you please re-confirm if this is your observation as well?


In my case pre-user-registration is not even being triggered during the time auth0 sends SMS or after the client calls for the access token. Does auth0 support pre-user-registration action for passwordless SMS connection?

Hi @amit.chavhan,

Yes, the Pre-User Registration Action triggers for both Database and Passwordless connections.

(Reference:Pre User Registration Flow)

I recommend using console.log() statements in your action script with the Real-time Webtask Logs Extension to track if the script is being triggered in your flow or any errors you may have.


@rueben.tiow Thank you so much, I can see logs coming from the extension you suggested. Can you tell me why action logs are not part of the regular logs?

Hi @amit.chavhan,

The Action logs are also part of the regular logs. You can see them on the Action Details section of your logs.



I am facing the same issue. I can see logs from pre-user-registration actions in Real-time Webtask Logs Extension , but the action is not in in regular logs. This is a for a passwordless email signin.

Hi @jieo,

After doing some tests myself, I can confirm that the Pre-User Registration Action logs do not appear in the regular logs for a Passwordless Email login.

I have reached our to our Engineering and Product teams regarding this and I will follow up once I have an update.