# Function: authorizationCodeGrantRequest()

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▸ **authorizationCodeGrantRequest**(`as`, `client`, `clientAuthentication`, `callbackParameters`, `redirectUri`, `codeVerifier`, `options?`): [`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`Response`](https://developer.mozilla.org/docs/Web/API/Response)\>

Performs an Authorization Code grant request at the
[`as.token\_endpoint`](../interfaces/AuthorizationServer.md#token_endpoint).

## Parameters

| Parameter | Type | Description |
| ------ | ------ | ------ |
| `as` | [`AuthorizationServer`](../interfaces/AuthorizationServer.md) | Authorization Server Metadata. |
| `client` | [`Client`](../interfaces/Client.md) | Client Metadata. |
| `clientAuthentication` | [`ClientAuth`](../type-aliases/ClientAuth.md) | Client Authentication Method. |
| `callbackParameters` | [`URLSearchParams`](https://developer.mozilla.org/docs/Web/API/URLSearchParams) | Parameters obtained from the callback to redirect_uri, this is returned from [validateAuthResponse](validateAuthResponse.md), or [validateJwtAuthResponse](validateJwtAuthResponse.md). |
| `redirectUri` | `string` | `redirect_uri` value used in the authorization request. |
| `codeVerifier` | `string` \| *typeof* [`nopkce`](../variables/nopkce.md) | PKCE `code_verifier` to send to the token endpoint. |
| `options?` | [`TokenEndpointRequestOptions`](../interfaces/TokenEndpointRequestOptions.md) | - |

## Returns

[`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`Response`](https://developer.mozilla.org/docs/Web/API/Response)\>

Resolves with a [Response](https://developer.mozilla.org/docs/Web/API/Response) to then invoke [processAuthorizationCodeResponse](processAuthorizationCodeResponse.md)
  with

## See

 - [RFC 6749 - The OAuth 2.0 Authorization Framework](https://www.rfc-editor.org/rfc/rfc6749.html#section-4.1)
 - [OpenID Connect Core 1.0](https://openid.net/specs/openid-connect-core-1_0-errata2.html#CodeFlowAuth)
 - [RFC 7636 - Proof Key for Code Exchange (PKCE)](https://www.rfc-editor.org/rfc/rfc7636.html#section-4)
 - [RFC 9449 - OAuth 2.0 Demonstrating Proof-of-Possession at the Application Layer (DPoP)](https://www.rfc-editor.org/rfc/rfc9449.html#name-dpop-access-token-request)
