Rule migration to Actions: adding properties to event.user. Possible?

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Hi @tracy.williams!

Welcome to the Auth0 Community!

To add properties directly to the user object (except user_metadata and app_metadata, these have direct methods built into the Actions API object), you can use the Management API in a post-login Action. This Community article details how to call the Management API in Actions: Using the Management API in Actions

That article provides a sample Action for adding a role to a user on their first login. For your use case, you could do something like this:

exports.onExecutePostLogin = async (event, api) => {

  const ManagementClient = require('auth0').ManagementClient;

  const management = new ManagementClient({
      domain: event.secrets.domain,
      clientId: event.secrets.clientId,
      clientSecret: event.secrets.clientSecret,
  });

  const params =  { id : event.user.user_id};
  const data = { *the properties you want to update* };

  try {
    const res = await management.users.update(params, data)
  } catch (e) {
    console.log(e)
    // Handle error
  }
};

Note: This is just a code sample and should be tested in a development environment first.

Also, as mentioned in the Actions Limitations docs, calls made to the Auth0 Management API are rate-limited. Please keep this in mind.

Please let me know if you have any additional questions!

Best,

Mary Beth