Extensibility Point: Post-User Registration

For Database Connections, the post-user-registration extensibility point allows you to implement custom actions that execute after a new user registers and is added to the database. Hooks associated with the post-user-registration extensibility point execute asynchronously from the actions that are a part of the Auth0 authentication process.

This allows you to implement scenarios including (but not limited to):

  • Sending notifications to Slack or via e-mail about the user's new account;
  • Creating a new user record in a CRM system.

Starter Code and Parameters

@param {object} user - The user being created
@param {string} user.id - user id
@param {string} user.tenant - Auth0 tenant name
@param {string} user.username - user name
@param {string} user.email - email
@param {boolean} user.emailVerified - is e-mail verified?
@param {string} user.phoneNumber - phone number
@param {boolean} user.phoneNumberVerified - is phone number verified?
@param {object} user.user_metadata - user metadata
@param {object} user.app_metadata - application metadata
@param {object} context - Auth0 connection and other context info
@param {string} context.requestLanguage - language of the client agent
@param {object} context.connection - information about the Auth0 connection
@param {object} context.connection.id - connection id
@param {object} context.connection.name - connection name
@param {object} context.connection.tenant - connection tenant
@param {object} context.webtask - webtask context
@param {function} cb - function (error, response)
module.exports = function (user, context, cb) {
  // Perform any asynchronous actions, e.g. send notification to Slack.

Response Object

The Post-User Registration extensibility point ignores any response object.

Example: Integrate with Slack

module.exports = function (user, context, cb) {

  // Get your Slack's hook URL from https://slack.com/services/10525858050

  // Post the new user's name and email address to the selected channel
  var slack = require('slack-notify')(SLACK_HOOK);
  var message = 'New User: ' + (user.name || user.email) + ' (' + user.email + ')';
  var channel = '#some_channel';

   text: message,
   channel: channel

  // Return immediately; the request to the Slack API will continue on the sandbox
  cb(null, user, context);