Post User Registration

The post-user-registration trigger runs after a user is added to a Database or connection. Use this trigger to notify another system that a user has registered for your application. Multiple Actions can be bound to this trigger, and the Actions will run in order.

Actions in this flow are non-blocking (asynchronous): the Auth0 pipeline continues to run without waiting for the Action to finish, so the Action’s outcome does not affect the Auth0 transaction.

References

Event object: Provides contextual information about the newly-created user.
API object: Provides methods for changing the behavior of the flow.

Common use cases

Notify Slack when a new user registers

A post-user-registration Action can be used to notify a Slack channel about each new registration:

/**
 * @param {Event} event - Details about the context and user that has registered.
 * @param {PostUserRegistrationAPI} api - Interface whose methods can be used to change the behavior of post user registration.
 */
exports.onExecutePostUserRegistration = async (event, api) => {
  const { IncomingWebhook } = require("@slack/webhook");
  const webhook = new IncomingWebhook(event.secrets.SLACK_WEBHOOK_URL);

  const text = `New User: ${event.user.email}`;
  const channel = '#some_channel';

  webhook.send({ text, channel });
};

For this Action to execute properly, the Action must contain a secret named SLACK_WEBHOOK_URL and must have a dependency on the @slack/webhook npm package.

Store the Auth0 user ID in a remote system

A post-user-registration Action can be used to store the Auth0 user ID in a remote system:

const axios = require("axios");

/**
 * @param {Event} event - Details about the context and user that has registered.
 * @param {PostUserRegistrationAPI} api - Interface whose methods can be used to change the behavior of post user registration.
 */
exports.onExecutePostUserRegistration = async (event, api) => {
  await axios.post("https://my-api.exampleco.com/users", { params: { email: event.user.email }});
};

To use an npm library like axios, you must add the library to the Action as a dependency. To learn more, read the “Add a dependency” section in Write Your First Action.

Post Login

Pre User Registration

⌘I

Brand Customization

Code Customization

Third-Party Customization

Post User Registration

References

Common use cases

Notify Slack when a new user registers

Store the Auth0 user ID in a remote system

​References

​Common use cases

​Notify Slack when a new user registers

​Store the Auth0 user ID in a remote system

References

Common use cases

Notify Slack when a new user registers

Store the Auth0 user ID in a remote system