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A verifier is essentially a configuration that contains information about the OAuth provider you've chosen for your application. It acts as a bridge between Web3Auth and the OAuth provider, enabling the Auth Network nodes to query and validate JWT tokens effectively.

A verifier contains the necessary information for Web3Auth's network nodes to validate the JWT token provided by an authentication service. This process ensures that the login attempt is legitimate and that the user controls the associated social or external account.

Types of Verifiers

Web3Auth's design accommodates a variety of authentication scenarios through three primary verifier types, each catering to different integration needs and offering distinct advantages:

Default Verifiers

For the basic integration of Web3Auth Plug and Play, we shield you from the complexities of creating and managing verifiers. This is done by providing default verifiers for the most popular social login providers, such as Google, Facebook, Twitter, and more. These default verifiers are pre-configured and ready to use, allowing you to get started with Web3Auth quickly and easily.

However, it is highly recommended to create custom verifiers for your application, as they offer more flexibility and control over the authentication flow. Some other caveats of using default verifiers are:

  • Migration from Default Verifiers to Custom Verifiers is not possible: Once the keys are assigned for a particular verifier, they cannot be changed.
  • Aggregation of the default verifier is not possible: If you want to aggregate two/more social providers, like Google and Email Passwordless, you will need to create an Aggregate Verifier, which is not possible if you start with:
    • a Default Verifier
    • Social Login Providers
    • Custom Providers

Social Login Verifiers

These verifiers simplify the integration of popular social login options - Google, Facebook, Discord, Twitch, and through Auth0, an array of additional services. This straightforward approach is especially beneficial for applications employing an implicit login flow, ensuring a hassle-free setup for both developers and users. Head over to the particular documentation for the social login provider you want to integrate with Web3Auth.

Custom Verifiers

For those seeking greater control or needing to integrate authentication services not directly supported within Web3Auth's dashboard, custom verifiers offer a solution. Whether you're leveraging your own backend authentication system or connecting to various social login providers, custom verifiers provide the flexibility to manually configure your authentication flow. This setup is particularly useful for applications integrating federated identity providers like Firebase, Cognito, or Okta, allowing for a tailored authentication experience.

Aggregate Verifiers

The digital landscape often requires users to authenticate via multiple methods. However, with multiple providers, you'll need to create multiple verifiers. However, the wallet generated for each user is specific to a verifier.

Aggregate verifiers address this need by enabling a unified identity across different login mechanisms. For instance, combining Google and Email Passwordless logins under a single verifier ensure that users receive the same private key regardless of their chosen method. These login methods should share the same verifier identifier, e.g., email or username which is unique to the user.

This process involves creating an aggregate verifier, followed by sub-verifiers for each login method.


Learn how to create an Aggregate Verifier.

  • It is advisable to create an Aggregate Multiple Providers verifier even if you're using just one login method for now. This will help you in the future if you want to add more login methods to use the Aggregate Verifier feature of Web3Auth in your application.
  • This is because we can't migrate from a single verifier(Social/Custom login methods) to an aggregate verifier without changing the wallet addresses.

You can read more about verifiers in this GitHub discussion.

Create Verifier

The Custom Authentication tab of a project looks something like this:

Custom Authentication Dashboard

Once you click on the Create Verifier button, you'll see a page similar to this:

Verifier Modal on Web3Auth Dashboard

To create a verifier, you need to input the following details:

Verifier identifier

The name of your verifier. This is a unique identifier that will be used to initialize the Web3Auth SDKs for using the custom authentication feature.

Choose a Login Provider

Select the Login Provider from the provided options.

The following is the list we have on our Dashboard:

  1. Social Login Providers
  2. Custom Providers
  3. Aggregate Multiple Providers

If something you're looking for is not available in the list, choose Custom Provider and provide the JWT details.

Can XYZ authenticator/login be supported?

The list above is only comprehensive to some of the logins our system can support. If you'd like support for a particular login system, send your query to or create a post under Feature Requests on our Community Forum.

If you have created a verifier under your project, you'll see it under the custom authentication tab.

Edit Verifier

Click on the verifier or the three dots next to the verifier you wish to edit and click on Edit Verifier in the dropdown.

Verifier Options

The Edit Verifier page will appear with previously filled information. Make the necessary changes and click on the Update Verifier button on the bottom.