# \#actions-extensibility **URL:** https://community.auth0.com/tag/actions-extensibility/1960.md [Latest](https://community.auth0.com/latest.md) · [Categories](https://community.auth0.com/categories.md) · [Tags](https://community.auth0.com/tags.md) --- ## [Action Module implementation details](https://community.auth0.com/t/action-module-implementation-details/204307)
**Author:** [@amay](https://community.auth0.com/u/amay)\ **Replies:** 4\ **Last updated:** [October 22, 2026, 7:23pm UTC](https://community.auth0.com/t/action-module-implementation-details/204307 "2026-10-22T19:23:32Z")
I’m trying to understand how action modules actually work as the information I’ve gotten from the support team does not seem to align with my testing. We’ve been trying to find a solution for our high M2M usage. We crea… --- ## [Auth0-deploy-cli latest version of action module](https://community.auth0.com/t/auth0-deploy-cli-latest-version-of-action-module/200557)
**Author:** [@gerardino.illescas](https://community.auth0.com/u/gerardino.illescas)\ **Replies:** 2\ **Last updated:** [June 8, 2026, 3:41pm UTC](https://community.auth0.com/t/auth0-deploy-cli-latest-version-of-action-module/200557 "2026-06-08T15:41:39Z")
Hi! I’m using the auth0-deploy-cli to orchestrate deployment of my tenant, including actions. Recently I got started using an action module to reuse some configuration and code. However, I have to specify a version for t… --- ## [How does Action dependency resolution work?](https://community.auth0.com/t/how-does-action-dependency-resolution-work/199208)
**Author:** [@amay](https://community.auth0.com/u/amay)\ **Replies:** 1\ **Last updated:** [April 30, 2026, 6:19pm UTC](https://community.auth0.com/t/how-does-action-dependency-resolution-work/199208 "2026-04-30T18:19:46Z")
We are using the twilio library for a custom phone action, and that has a dependency on axios that recently has critical vulnerabilities. We’d like to understand how actions resolves transient dependencies and whether t… --- ## [Auth0 Actions limit — per tenant or per subscription](https://community.auth0.com/t/auth0-actions-limit-per-tenant-or-per-subscription/193481)
**Author:** [@phillip.grujovski](https://community.auth0.com/u/phillip.grujovski)\ **Replies:** 2\ **Last updated:** [October 23, 2025, 8:44am UTC](https://community.auth0.com/t/auth0-actions-limit-per-tenant-or-per-subscription/193481 "2025-10-23T08:44:12Z")
Hello, Could I get some clarification on how the “30 Actions” limit is scoped? I have an enterprise Auth0 subscription with three tenants: dev, stage, and prod. Is it 30 Actions per tenant, or 30 total across the … --- ## [Managing Email Collection and Verification in Auth0 for SSO Across Multiple Projects](https://community.auth0.com/t/managing-email-collection-and-verification-in-auth0-for-sso-across-multiple-projects/191340)
**Author:** [@isboyjc](https://community.auth0.com/u/isboyjc)\ **Replies:** 12\ **Last updated:** [October 17, 2025, 6:11pm UTC](https://community.auth0.com/t/managing-email-collection-and-verification-in-auth0-for-sso-across-multiple-projects/191340 "2025-10-17T18:11:53Z")
I am using Auth0 for single sign-on (SSO), with three projects sharing the same tenant. In all these projects, having an email is mandatory. Users logging in via Auth0 in my projects should always have an email. However,… --- ## [Unable to register an action for password-reset-post-challenge](https://community.auth0.com/t/unable-to-register-an-action-for-password-reset-post-challenge/191232)
**Author:** [@Davidson.Mohanty](https://community.auth0.com/u/Davidson.Mohanty)\ **Replies:** 5\ **Last updated:** [September 4, 2025, 5:29am UTC](https://community.auth0.com/t/unable-to-register-an-action-for-password-reset-post-challenge/191232 "2025-09-04T05:29:44Z")
Hi, i am unable to create an action for the trigger: password-reset-post-challenge. I have tried both, password-reset-post-challenge & post-challenge. I am using the CLI to deploy my changes. This pipeline already deploy… --- ## [Flow execution failed in HTTP Request integration (Cloudflare proxy incompatibility?)](https://community.auth0.com/t/flow-execution-failed-in-http-request-integration-cloudflare-proxy-incompatibility/190962)
**Author:** [@js7](https://community.auth0.com/u/js7)\ **Replies:** 2\ **Last updated:** [August 25, 2025, 7:44pm UTC](https://community.auth0.com/t/flow-execution-failed-in-http-request-integration-cloudflare-proxy-incompatibility/190962 "2025-08-25T19:44:21Z")
The Knowledge article “Flow Execution Failure With a “Server error processing request” Error” provides very little in the way of clarification or guidance on how to get more detailed information about the failure state. … --- ## [3 days left: Post your questions for the Actions AMA](https://community.auth0.com/t/3-days-left-post-your-questions-for-the-actions-ama/191078)
**Author:** [@dawid.matuszczyk](https://community.auth0.com/u/dawid.matuszczyk)\ **Replies:** 1\ **Last updated:** [August 25, 2025, 4:56pm UTC](https://community.auth0.com/t/3-days-left-post-your-questions-for-the-actions-ama/191078 "2025-08-25T16:56:57Z")
Only 3 days left to get your questions in before they’re answered during the Actions AMA on August 27, 2025, 9:00–11:00 AM PT by our Expert Gaston Danilo Asis Sanchez, Senior Technical Product Manager. The submission win… --- ## [Disabling MFA using Actions not working as expected](https://community.auth0.com/t/disabling-mfa-using-actions-not-working-as-expected/184793)
**Author:** [@michal.k](https://community.auth0.com/u/michal.k)\ **Replies:** 1\ **Last updated:** [March 31, 2025, 8:02pm UTC](https://community.auth0.com/t/disabling-mfa-using-actions-not-working-as-expected/184793 "2025-03-31T20:02:27Z")
Ready to post? :magnifying\_glass\_tilted\_left: First, try searching for your answer. Hello, Expectation We would like to have Adaptive MFA configured for all users with OTP and Email as enrollment options. We would like… --- ## [Likely bug in Password Rotation integration](https://community.auth0.com/t/likely-bug-in-password-rotation-integration/168574)
**Author:** [@saithal](https://community.auth0.com/u/saithal)\ **Replies:** 4\ **Last updated:** [January 20, 2025, 5:17am UTC](https://community.auth0.com/t/likely-bug-in-password-rotation-integration/168574 "2025-01-20T05:17:10Z")
I recently added Password Rotation integration to the post-login trigger. After that a few users who logged in, reported that no matter how many times they reset their password, they kept getting the error that their pas… --- ## [Pre-user-registration throw "Extensibility error"](https://community.auth0.com/t/pre-user-registration-throw-extensibility-error/151194)
**Author:** [@denaikG](https://community.auth0.com/u/denaikG)\ **Replies:** 10\ **Last updated:** [November 30, 2024, 12:43pm UTC](https://community.auth0.com/t/pre-user-registration-throw-extensibility-error/151194 "2024-11-30T12:43:42Z")
I have added “Domain Based Registration” action to the pre-user-registration trigger. And it is work fine but last time it is always throw the “Extensibility error” in the registration flow. All other without any customi… --- ## [How to retrieve the referrer URL in an Auth0 Post Login Action?](https://community.auth0.com/t/how-to-retrieve-the-referrer-url-in-an-auth0-post-login-action/151169)
**Author:** [@b.neugebauer](https://community.auth0.com/u/b.neugebauer)\ **Replies:** 3\ **Last updated:** [November 15, 2024, 9:29pm UTC](https://community.auth0.com/t/how-to-retrieve-the-referrer-url-in-an-auth0-post-login-action/151169 "2024-11-15T21:29:15Z")
Hi, I’m looking to create a post-login action that depends on the URL the user originally visited. I’m securing a Google AppSheet URL with Auth0, and here’s my use case: User navigates to https://www.appsheet.com/star… --- ## [Use branding from Universal Login in Forms](https://community.auth0.com/t/use-branding-from-universal-login-in-forms/141179)
**Author:** [@bo.korrel](https://community.auth0.com/u/bo.korrel)\ **Replies:** 6\ **Last updated:** [November 5, 2024, 11:52pm UTC](https://community.auth0.com/t/use-branding-from-universal-login-in-forms/141179 "2024-11-05T23:52:54Z")
Hi there! Would it be possible in the new ‘Forms’ functionality to use the same consistent branding as defined in the Universal Login? Right now the user forms in the steps look different, because our logo is not showi… --- ## [Actions to customize /userinfo endpoint?](https://community.auth0.com/t/actions-to-customize-userinfo-endpoint/148544)
**Author:** [@matt31](https://community.auth0.com/u/matt31)\ **Replies:** 3\ **Last updated:** [October 22, 2024, 6:39pm UTC](https://community.auth0.com/t/actions-to-customize-userinfo-endpoint/148544 "2024-10-22T18:39:21Z")
Is there a code sample or documentation around how I can customize the userinfo endpoint response using an action? Our use case is we have an oauth based SSO integration that we want to allow admin users to log in as oth… --- ## [Updating Custom Claims After Login Event](https://community.auth0.com/t/updating-custom-claims-after-login-event/148515)
**Author:** [@baynezy](https://community.auth0.com/u/baynezy)\ **Replies:** 1\ **Last updated:** [October 3, 2024, 8:32pm UTC](https://community.auth0.com/t/updating-custom-claims-after-login-event/148515 "2024-10-03T20:32:23Z")
I have used Actions with the post-login trigger to add a custom claim to my ID Token. This makes a call to an API of mine and based on that the claims are added. This work very well. These claims relate the subscription… --- ## [Post MFA action possible?](https://community.auth0.com/t/post-mfa-action-possible/147492)
**Author:** [@shubham2](https://community.auth0.com/u/shubham2)\ **Replies:** 1\ **Last updated:** [September 19, 2024, 5:57pm UTC](https://community.auth0.com/t/post-mfa-action-possible/147492 "2024-09-19T17:57:58Z")
Is it in anyway possible to run some code after user has submitted the OTP from the MFA prompt? Something similar to the existing “Post login action”, perhaps? --- ## [New tool: AI Assistant for Auth0 Actions](https://community.auth0.com/t/new-tool-ai-assistant-for-auth0-actions/140218)
**Author:** [@pnicholls](https://community.auth0.com/u/pnicholls)\ **Replies:** 2\ **Last updated:** [November 28, 2025, 6:19pm UTC](https://community.auth0.com/t/new-tool-ai-assistant-for-auth0-actions/140218 "2025-11-28T18:19:30Z")
We published a new tool to help developers write Actions and their corresponding unit tests. It’s called the AI Assistant for Auth0 Actions, and it’s free to use. Give it a description of the problem in English, and it … --- ## [Caching of API token in action does not work](https://community.auth0.com/t/caching-of-api-token-in-action-does-not-work/130978)
**Author:** [@linda](https://community.auth0.com/u/linda)\ **Replies:** 5\ **Last updated:** [June 29, 2024, 12:29am UTC](https://community.auth0.com/t/caching-of-api-token-in-action-does-not-work/130978 "2024-06-29T00:29:44Z")
When a user logs in, I am using an action to contact two APIs: the Auth0 management API and a custom-made API. Both APIs require tokens for authentication. To avoid hitting rate limits (and to make the process faster) I … --- ## [Rules to actions migration, idToken claim not being passed through](https://community.auth0.com/t/rules-to-actions-migration-idtoken-claim-not-being-passed-through/134837)
**Author:** [@tibotiber](https://community.auth0.com/u/tibotiber)\ **Replies:** 6\ **Last updated:** [June 10, 2024, 2:51pm UTC](https://community.auth0.com/t/rules-to-actions-migration-idtoken-claim-not-being-passed-through/134837 "2024-06-10T14:51:33Z")
Hi, I’m trying to migrate from rules to actions. The guide was pretty great and I think i’ve got everything good to go. However my idToken is not being set anymore. Here is the rule I was using: function(user, context,… --- ## [Are request\_scopes not set in Post Login action for Resource Owner Password Flow?](https://community.auth0.com/t/are-request-scopes-not-set-in-post-login-action-for-resource-owner-password-flow/135235)
**Author:** [@djfy](https://community.auth0.com/u/djfy)\ **Replies:** 3\ **Last updated:** [May 30, 2024, 9:39pm UTC](https://community.auth0.com/t/are-request-scopes-not-set-in-post-login-action-for-resource-owner-password-flow/135235 "2024-05-30T21:39:48Z")
Summary The issue I’m encountering is the Resource Owner password flow login does not cause the requested\_scopes array to be initialized (from event.transaction.requested\_scopes) for the Post Login actions. Does anyone … --- ## [Unit testing and developing Actions locally](https://community.auth0.com/t/unit-testing-and-developing-actions-locally/134307)
**Author:** [@pnicholls](https://community.auth0.com/u/pnicholls)\ **Replies:** 1\ **Last updated:** [May 16, 2024, 10:24pm UTC](https://community.auth0.com/t/unit-testing-and-developing-actions-locally/134307 "2024-05-16T22:24:52Z")
I wanted to share with the community a library we’ve been working on internally to help developers build and test Actions locally, which we’ve just open sourced: @kilterset/auth0-actions-testing. When writing our own Ac… --- ## [Can we call an external api to our app from pre-user-registration Action?](https://community.auth0.com/t/can-we-call-an-external-api-to-our-app-from-pre-user-registration-action/133881)
**Author:** [@chris.howell](https://community.auth0.com/u/chris.howell)\ **Replies:** 2\ **Last updated:** [May 16, 2024, 9:58pm UTC](https://community.auth0.com/t/can-we-call-an-external-api-to-our-app-from-pre-user-registration-action/133881 "2024-05-16T21:58:57Z")
I would like to connect to our local db during signup to determine if a user’s email already exists in our db table. I wrote a Pre-User-Registration Action to use an api to execute a function in our application to query… --- ## [I need help converting a rule to action](https://community.auth0.com/t/i-need-help-converting-a-rule-to-action/133858)
**Author:** [@paperjt](https://community.auth0.com/u/paperjt)\ **Replies:** 3\ **Last updated:** [May 10, 2024, 7:42pm UTC](https://community.auth0.com/t/i-need-help-converting-a-rule-to-action/133858 "2024-05-10T19:42:26Z")
function addClasslinkTenantIdToAccessToken(user, context, callback) { if (context.connection.match(/Classlink/)) { context.accessToken.classlink\_tenant\_id = user.classlink\_tenant\_id } return callback(… --- ## [Set Custom Claim in callback function doesn't work](https://community.auth0.com/t/set-custom-claim-in-callback-function-doesnt-work/130075)
**Author:** [@shacharl1](https://community.auth0.com/u/shacharl1)\ **Replies:** 3\ **Last updated:** [March 28, 2024, 12:52pm UTC](https://community.auth0.com/t/set-custom-claim-in-callback-function-doesnt-work/130075 "2024-03-28T12:52:01Z")
I’m migrating from Rules to Actions and when and the following doesn’t work for me - var getDb = require('mongo-getdb'); exports.onExecutePostLogin = async (event, api) =\> { var namespace = 'https://mydomain.com/'; getD… --- ## [Adding custom claims in post-login Action when refreshing token](https://community.auth0.com/t/adding-custom-claims-in-post-login-action-when-refreshing-token/128708)
**Author:** [@mwoodbri](https://community.auth0.com/u/mwoodbri)\ **Replies:** 7\ **Last updated:** [March 18, 2024, 11:54pm UTC](https://community.auth0.com/t/adding-custom-claims-in-post-login-action-when-refreshing-token/128708 "2024-03-18T23:54:05Z")
We have a post-login action to add custom claims to access tokens depending on the requested scopes - this works fine. We’re using it with auth0-angular, which automatically attempts refreshes the access token when neces… --- ## [Under what conditions is \`event.transaction (optional)\` part of the event?](https://community.auth0.com/t/under-what-conditions-is-event-transaction-optional-part-of-the-event/129021)
**Author:** [@mherzig](https://community.auth0.com/u/mherzig)\ **Replies:** 2\ **Last updated:** [March 12, 2024, 8:47pm UTC](https://community.auth0.com/t/under-what-conditions-is-event-transaction-optional-part-of-the-event/129021 "2024-03-12T20:47:04Z")
In my post-user-registration action, I’m trying to get the event.transaction as is documented here. It says it’s “optional,” but when does it actually show up? Context is, I need to know which organization or applicatio… --- ## [Auth0 Actions: "error\_description" is no longer included in callback URL when denying a user access post-login](https://community.auth0.com/t/auth0-actions-error-description-is-no-longer-included-in-callback-url-when-denying-a-user-access-post-login/122144)
**Author:** [@josh.cole](https://community.auth0.com/u/josh.cole)\ **Replies:** 1\ **Last updated:** [December 6, 2023, 7:24pm UTC](https://community.auth0.com/t/auth0-actions-error-description-is-no-longer-included-in-callback-url-when-denying-a-user-access-post-login/122144 "2023-12-06T19:24:01Z")
Hello, We have encountered an issue where the error\_description query string parameter is no longer being included in the callback URL for our application when we deny a user login inside a Post Login Action. This previ… --- ## [Help converting a rule to an action](https://community.auth0.com/t/help-converting-a-rule-to-an-action/118967)
**Author:** [@j.montgomery](https://community.auth0.com/u/j.montgomery)\ **Replies:** 2\ **Last updated:** [October 18, 2024, 8:51am UTC](https://community.auth0.com/t/help-converting-a-rule-to-an-action/118967 "2024-10-18T08:51:18Z")
I am trying to answer the same question as this commenter: Convert rules to action help For certain flows I want to map either user.email or user.upn to a custom email claim in the ID token that my app uses in lieu of e… --- ## [Action Login Flow - Not able to enrich the access token with the user's permission](https://community.auth0.com/t/action-login-flow-not-able-to-enrich-the-access-token-with-the-users-permission/116930)
**Author:** [@nam.liberty](https://community.auth0.com/u/nam.liberty)\ **Replies:** 8\ **Last updated:** [October 5, 2023, 12:12pm UTC](https://community.auth0.com/t/action-login-flow-not-able-to-enrich-the-access-token-with-the-users-permission/116930 "2023-10-05T12:12:51Z")
Context: Currently, we use Auth0 Authorisation extension to manage RBAC. This extension provides a rule that is executed prior to any other rules in the Auth Pipeline to update the user’s app metadata with all RBAC infor… --- ## [Account linking issues](https://community.auth0.com/t/account-linking-issues/115750)
**Author:** [@mhautala](https://community.auth0.com/u/mhautala)\ **Replies:** 5\ **Last updated:** [September 27, 2023, 7:12am UTC](https://community.auth0.com/t/account-linking-issues/115750 "2023-09-27T07:12:39Z")
Follow up to this topic: Account linking We face the exact same “Unable to deserialize user after prompt” issue when redirecting from rules/actions and linking an email connection identity to a existing db user. In the… [Next page](https://community.auth0.com/tag/actions-extensibility/1960.md?match_all_tags=true&page=1&tags%5B%5D=actions-extensibility)