#### [Abblix\.Oidc\.Server](https://www.abblix.com/en/docs/api/abblix-oidc-server 'index')
### [Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Validation](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation 'Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Validation')

## InitialAccessTokenValidator Class

Validates the initial access token on client registration requests per RFC 7591 Section 3
and RFC 6750 Bearer Token Usage\. When [RequireInitialAccessToken](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.Configuration.OidcOptions#Abblix.Oidc.Server.Common.Configuration.OidcOptions.RequireInitialAccessToken 'Abblix\.Oidc\.Server\.Common\.Configuration\.OidcOptions\.RequireInitialAccessToken') is enabled,
checks JWT signature, expiration, type, and revocation status\.
Skipped for update operations and when the feature is disabled\.

```csharp
public class InitialAccessTokenValidator : Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.IClientRegistrationContextValidator
```

Inheritance [System\.Object](https://learn.microsoft.com/en-us/dotnet/api/system.object 'System\.Object') → InitialAccessTokenValidator

Implements [IClientRegistrationContextValidator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.IClientRegistrationContextValidator 'Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Validation\.IClientRegistrationContextValidator')
### Constructors

## InitialAccessTokenValidator\(IAuthServiceJwtValidator, IInitialAccessTokenRevocationProvider, IOptionsMonitor\<OidcOptions\>\) Constructor {#Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.InitialAccessTokenValidator.InitialAccessTokenValidator(Abblix.Oidc.Server.Features.Tokens.Validation.IAuthServiceJwtValidator,Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Interfaces.IInitialAccessTokenRevocationProvider,Microsoft.Extensions.Options.IOptionsMonitor_Abblix.Oidc.Server.Common.Configuration.OidcOptions_)}

Validates the initial access token on client registration requests per RFC 7591 Section 3
and RFC 6750 Bearer Token Usage\. When [RequireInitialAccessToken](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.Configuration.OidcOptions#Abblix.Oidc.Server.Common.Configuration.OidcOptions.RequireInitialAccessToken 'Abblix\.Oidc\.Server\.Common\.Configuration\.OidcOptions\.RequireInitialAccessToken') is enabled,
checks JWT signature, expiration, type, and revocation status\.
Skipped for update operations and when the feature is disabled\.

```csharp
public InitialAccessTokenValidator(Abblix.Oidc.Server.Features.Tokens.Validation.IAuthServiceJwtValidator jwtValidator, Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Interfaces.IInitialAccessTokenRevocationProvider revocationProvider, Microsoft.Extensions.Options.IOptionsMonitor<Abblix.Oidc.Server.Common.Configuration.OidcOptions> options);
```
#### Parameters

###### `jwtValidator` [IAuthServiceJwtValidator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Features.Tokens.Validation.IAuthServiceJwtValidator 'Abblix\.Oidc\.Server\.Features\.Tokens\.Validation\.IAuthServiceJwtValidator') {#Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.InitialAccessTokenValidator.InitialAccessTokenValidator(Abblix.Oidc.Server.Features.Tokens.Validation.IAuthServiceJwtValidator,Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Interfaces.IInitialAccessTokenRevocationProvider,Microsoft.Extensions.Options.IOptionsMonitor_Abblix.Oidc.Server.Common.Configuration.OidcOptions_).jwtValidator}

Validates JWT signature and expiration\.

###### `revocationProvider` [IInitialAccessTokenRevocationProvider](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Interfaces.IInitialAccessTokenRevocationProvider 'Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Interfaces\.IInitialAccessTokenRevocationProvider') {#Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.InitialAccessTokenValidator.InitialAccessTokenValidator(Abblix.Oidc.Server.Features.Tokens.Validation.IAuthServiceJwtValidator,Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Interfaces.IInitialAccessTokenRevocationProvider,Microsoft.Extensions.Options.IOptionsMonitor_Abblix.Oidc.Server.Common.Configuration.OidcOptions_).revocationProvider}

Checks whether the token has been revoked\.

###### `options` [Microsoft\.Extensions\.Options\.IOptionsMonitor&lt;](https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.options.ioptionsmonitor-1 'Microsoft\.Extensions\.Options\.IOptionsMonitor\`1')[OidcOptions](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.Configuration.OidcOptions 'Abblix\.Oidc\.Server\.Common\.Configuration\.OidcOptions')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.options.ioptionsmonitor-1 'Microsoft\.Extensions\.Options\.IOptionsMonitor\`1') {#Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.InitialAccessTokenValidator.InitialAccessTokenValidator(Abblix.Oidc.Server.Features.Tokens.Validation.IAuthServiceJwtValidator,Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Interfaces.IInitialAccessTokenRevocationProvider,Microsoft.Extensions.Options.IOptionsMonitor_Abblix.Oidc.Server.Common.Configuration.OidcOptions_).options}

OIDC configuration options\.
### Methods

## InitialAccessTokenValidator\.ValidateAsync\(ClientRegistrationValidationContext\) Method {#Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.InitialAccessTokenValidator.ValidateAsync(Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.ClientRegistrationValidationContext)}

Validates the slice of registration metadata this implementation owns\.
May mutate [ClientRegistrationValidationContext](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.ClientRegistrationValidationContext 'Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Validation\.ClientRegistrationValidationContext') with derived values
\(for example the resolved sector identifier\)\.

```csharp
public System.Threading.Tasks.Task<Abblix.Oidc.Server.Common.OidcError?> ValidateAsync(Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.ClientRegistrationValidationContext context);
```
#### Parameters

###### `context` [ClientRegistrationValidationContext](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.ClientRegistrationValidationContext 'Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Validation\.ClientRegistrationValidationContext') {#Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.InitialAccessTokenValidator.ValidateAsync(Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.ClientRegistrationValidationContext).context}

The shared validation context for the current request\.

Implements [ValidateAsync\(ClientRegistrationValidationContext\)](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.IClientRegistrationContextValidator#Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.IClientRegistrationContextValidator.ValidateAsync(Abblix.Oidc.Server.Endpoints.DynamicClientManagement.Validation.ClientRegistrationValidationContext) 'Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Validation\.IClientRegistrationContextValidator\.ValidateAsync\(Abblix\.Oidc\.Server\.Endpoints\.DynamicClientManagement\.Validation\.ClientRegistrationValidationContext\)')

#### Returns
[System\.Threading\.Tasks\.Task&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')  
An [OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError') describing the rejection, or `null` when valid\.