> ## Documentation Index
> Fetch the complete documentation index at: https://auth0.generaltranslation.app/llms.txt
> Use this file to discover all available pages before exploring further.

> Learn about the post-user-registration Action trigger's event object, which provides contextual information about the newly-created user.

# Actions Triggers: post-user-registration - Event Object

The `event` object for the post-user-registration Actions trigger provides contextual information about the newly-created user.

<table class="table">
  <thead>
    <tr>
      <th>Property</th>
      <th>Description</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>
        <p><code>event.connection</code></p>
      </td>

      <td>
        <p>Details about the Connection that was used to register the user.</p>
        <p>Includes the following properties:</p>

        <ul>
          <li>
            <code>id</code> <em>String</em>.
            <span>The connection's unique identifier.</span>
          </li>

          <li>
            <code>metadata</code> <em>Optional dictionary</em>.
            <span>Metadata associated with the connection.</span>
          </li>

          <li>
            <code>name</code> <em>String</em>.
            <span>The name of the connection used to authenticate the user (for example, <code>twitter</code> or <code>some-g-suite-domain</code>).</span>
          </li>

          <li>
            <code>strategy</code> <em>String</em>.
            <span>The type of connection. For social connections, <code>event.connection.strategy === event.connection.name</code>. For enterprise connections, the strategy is <code>waad</code> (Windows Azure AD), <code>ad</code> (Active Directory/LDAP), <code>auth0</code> (database connections), and so on.</span>
          </li>
        </ul>
      </td>
    </tr>

    <tr>
      <td><code>event.custom\_domain</code> (Early access)</td>

      <td>
        <p>Details about the custom domain name information.</p>
        <p>Includes the following properties:</p>

        <ul>
          <li><code>domain</code> <em>String</em>. The custom domain where the authentication event occurred.</li>

          <li>
            <code>domain\_metadata</code> <em>Object</em>. Metadata associated with the custom domain.<br />
          </li>
        </ul>
      </td>
    </tr>

    <tr>
      <td>
        <p><code>event.request</code></p>
        <p><em>(Optional)</em></p>
      </td>

      <td>
        <p>Details about the request that initiated the transaction.</p>
        <p>Includes the following properties:</p>

        <ul>
          <li>
            <code>geoip</code> <em>Object</em>. <span>Contains geographical information about the request.</span>
            <p>Includes the following properties:</p>

            <ul>
              <li><code>cityName</code> <em>Optional string</em>.</li>
              <li><code>continentCode</code> <em>Optional string</em>.</li>
              <li><code>countryCode</code> <em>Optional string</em>.</li>
              <li><code>countryCode3</code> <em>Optional string</em>.</li>
              <li><code>countryName</code> <em>Optional string</em>.</li>
              <li><code>latitude</code> <em>Optional number</em>.</li>
              <li><code>longitude</code> <em>Optional number</em>.</li>
              <li><code>subdivisionCode</code> <em>Optional string</em>.</li>
              <li><code>subdivisionName</code> <em>Optional string</em>.</li>
              <li><code>timeZone</code> <em>Optional string</em>.</li>
            </ul>
          </li>

          <li>
            <code>hostname</code> <em>Optional string</em>.
            <span>The hostname that is being used for the authentication
            flow.</span>
          </li>

          <li>
            <code>ip</code> <em>String</em>.
            <span>The originating IP address of the request.</span>
          </li>

          <li>
            <code>language</code> <em>Optional string</em>.
            <span>The language requested by the browser.</span>
          </li>

          <li>
            <code>method</code> <em>String</em>.
            <span>The HTTP method used for the request</span>
          </li>

          <li>
            <code>user\_agent</code> <em>Optional string</em>.
            <span>The value of the <code>User-Agent</code> header received when initiating the transaction.</span>
          </li>
        </ul>
      </td>
    </tr>

    <tr><td><p><code>event.security\_context</code></p><p><em>(Optional)</em></p></td><td><p>An object containing fingerprint signatures. This will be available only when traffic is handled through the Auth0 Edge (default Auth0-managed proxy layer). It may not be available if requests are routed through a customer-managed reverse proxy. The JA3/JA4 fingerprint can be null or empty in some cases. The most common case is for HTTP requests because JA3 and JA4 are calculated in TLS. It can also be empty due to the Worker sending requests within the same zone or to a zone that is not proxied (or a third party).</p><p>Includes the following properties:</p><ul><li><code>ja3</code> <em>Optional string</em>. <span>JA3 fingerprint signature. This will be available only if the client is using a TLS connection.</span></li><li><code>ja4</code> <em>Optional string</em>. <span>JA4 fingerprint signature. This will be available only if the client is using a TLS connection.</span></li></ul></td></tr>

    <tr>
      <td>
        <p><code>event.tenant</code></p>
      </td>

      <td>
        <p>Details about the Tenant associated with the current transaction.</p>
        <p>Includes the following properties:</p>

        <ul>
          <li>
            <code>id</code> <em>String</em>.
            <span>The name of the tenant.</span>
          </li>
        </ul>
      </td>
    </tr>

    <tr>
      <td>
        <p><code>event.transaction</code></p>
        <p><em>(Optional)</em></p>
      </td>

      <td>
        <p>Details about the current transaction.</p>
        <p>Includes the following properties:</p>

        <ul>
          <li>
            <code>acr\_values</code> <em>Array of strings</em>.
            <span>Any <code>acr\_values</code> provided in the original authentication
            request.</span>
          </li>

          <li>
            <code>locale</code> <em>String</em>.
            <span>The locale to be used for this transaction as determined by comparing the browser's requested languages to the tenant's language settings.</span>
          </li>

          <li>
            <code>login\_hint</code> <em>Optional string</em>.
            <span>Hint to the authorization server about the login identifier the end-user might use to log in (if necessary).</span>
          </li>

          <li>
            <code>prompt</code> <em>Optional array of strings</em>.
            <span>List of instructions indicating whether the user may be prompted for re-authentication and consent.</span>
          </li>

          <li>
            <code>protocol</code> <em>Optional string</em>. <span>Contains information about the authentication protocol.</span>
            <p>Possible values include:</p>

            <ul>
              <li>
                <code>oidc-basic-profile</code>
                <span>Most used, web-based login.</span>
              </li>

              <li>
                <code>oidc-implicit-profile</code>
                <span>Used on mobile devices and single-page apps.</span>
              </li>

              <li>
                <code>samlp</code> <span>SAML protocol used on SaaS apps.</span>
              </li>

              <li>
                <code>wsfed</code>
                <span>WS-Federation used on Microsoft products like Office365.</span>
              </li>

              <li>
                <code>wstrust-usernamemixed</code>
                <span>WS-trust User/password login used on CRM and Office365.</span>
              </li>

              <li>
                <code>oauth2-webauthn</code>
                <span>Signup via Native Passkeys API.</span>
              </li>

              <li>
                <code>oauth2-device-code</code>
                <span>Transaction using the Device <Tooltip tip="Authorization grant (or workflow) specified in the OAuth 2.0 framework." cta="View Glossary" href="/docs/glossary?term=Authorization+Flow">Authorization Flow</Tooltip>.</span>
              </li>

              <li>
                <code>oauth2-resource-owner</code>
                <span>User/password login typically used on database connections.</span>
              </li>

              <li>
                <code>oauth2-resource-owner-jwt-bearer</code>
                <span>Login using a bearer JWT signed with user's private key.</span>
              </li>

              <li>
                <code>oauth2-password</code>
                <span>Login using the password exchange.</span>
              </li>

              <li>
                <code>oauth2-access-token</code>
                <span>Refreshing a token using the refresh token exchange.</span>
              </li>

              <li>
                <code>oauth2-refresh-token</code>
                <span>Refreshing a token using the refresh token exchange.</span>
              </li>

              <li><code>oauth2-token-exchange</code></li>

              <li>
                <code>oidc-basic-profile</code>
                <span>Most used, web-based login.</span>
              </li>
            </ul>
          </li>

          <li>
            <code>redirect\_uri</code> <em>Optional string</em>.
            <span>The URL to which Auth0 will redirect the browser after the transaction is completed.</span>
          </li>

          <li>
            <code>requested\_scopes</code> <em>Array of strings</em>.
            <span>The scopes requested (if any) when starting this authentication flow.</span>
          </li>

          <li>
            <code>response\_mode</code> <em>Optional string</em>.
            <p>Informs the authorizationsServer of the mechanism to be used for returning parameters from the authorization endpoint.</p>
            <p>Possible values include:</p>

            <ul>
              <li><code>query</code></li>
              <li><code>fragment</code></li>
              <li><code>form\_post</code></li>
              <li><code>web\_message</code></li>
            </ul>
          </li>

          <li>
            <code>response\_type</code> <em>Optional array of strings</em>.
            <p>Possible values include:</p>

            <ul>
              <li><code>code</code></li>
              <li><code>token</code></li>
              <li><code>id\_token</code></li>
            </ul>
          </li>

          <li>
            <code>state</code> <em>Optional string</em>.
            <span>An opaque arbitrary alphanumeric string your app adds to the initial request that Auth0 includes when redirecting back to your application.</span>
          </li>

          <li>
            <code>ui\_locales</code> <em>Array of strings</em>.
            <span>The <code>ui\_locales</code> provided in the original authentication request.</span>
          </li>
        </ul>
      </td>
    </tr>

    <tr>
      <td>
        <p><code>event.user</code></p>
      </td>

      <td>
        <p>
          An object describing the user on whose behalf the current transaction was initiated.
        </p>

        <p>Includes the following properties:</p>

        <ul>
          <li>
            <code>app\_metadata</code> <em>Dictionary</em>.
            <span>Custom fields that store info about a user that influences the user's access, such as support plan, security roles, or access control groups.</span>
          </li>

          <li>
            <code>created\_at</code> <em>String</em>.
            <span>Timestamp indicating when the user profile was first created.</span>
          </li>

          <li>
            <code>email</code> <em>Optional string</em>.
            <span>(unique) User's email address.</span>
          </li>

          <li>
            <code>email\_verified</code> <em>Boolean</em>.
            <span>Indicates whether the user has verified their email address.</span>
          </li>

          <li>
            <code>family\_name</code> <em>Optional string</em>.
            <span>User's family name.</span>
          </li>

          <li>
            <code>given\_name</code> <em>Optional string</em>.
            <span>User's given name.</span>
          </li>

          <li>
            <code>last\_password\_reset</code> <em>Optional string</em>.
            <span>Timestamp indicating the last time the user's password was reset/changed. At user creation, this field does not exist. This property is only available for Database connections.</span>
          </li>

          <li>
            <code>name</code> <em>Optional string</em>.
            <span>User's full name.</span>
          </li>

          <li>
            <code>nickname</code> <em>Optional string</em>.
            <span>User's nickname.</span>
          </li>

          <li>
            <code>phone\_number</code> <em>Optional string</em>.
            <span>User's phone number.</span>
          </li>

          <li>
            <code>phone\_verified</code> <em>Optional boolean</em>.
            <span>Indicates whether the user has verified their phone number.</span>
          </li>

          <li>
            <code>picture</code> <em>Optional string</em>.
            <span>URL pointing to the
            <a href="/docs/manage-users/user-accounts/change-user-picture">user's profile picture</a>.</span>
          </li>

          <li>
            <code>updated\_at</code> <em>String</em>.
            <span>Timestamp indicating when the user's profile was last updated/modified.</span>
          </li>

          <li>
            <code>user\_id</code> <em>String</em>.
            <span>(unique) User's unique identifier.</span>
          </li>

          <li>
            <code>user\_metadata</code> <em>Dictionary</em>.
            <span>Custom fields that store info about a user that does not impact what they can or cannot access, such as work address, home address, or user preferences.</span>
          </li>

          <li>
            <code>username</code> <em>Optional string</em>.
            <span>(unique) User's username.</span>
          </li>
        </ul>
      </td>
    </tr>
  </tbody>
</table>