# CreateAuthKeysCodeRequestBody ## Fields | Field | Type | Required | Description | Example | | -------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | | `callback_url` | *str* | :heavy_check_mark: | The callback URL to redirect to after authorization. Note, only https URLs on ports 443 and 3000 are allowed. | https://myapp.com/auth/callback | | `code_challenge` | *Optional[str]* | :heavy_minus_sign: | PKCE code challenge for enhanced security | E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM | | `code_challenge_method` | [Optional[operations.CreateAuthKeysCodeCodeChallengeMethod]](../operations/createauthkeyscodecodechallengemethod.md) | :heavy_minus_sign: | The method used to generate the code challenge | S256 | | `expires_at` | [date](https://docs.python.org/3/library/datetime.html#date-objects) | :heavy_minus_sign: | Optional expiration time for the API key to be created | 2027-12-31T23:59:59Z | | `key_label` | *Optional[str]* | :heavy_minus_sign: | Optional custom label for the API key. Defaults to the app name if not provided. | My Custom Key | | `limit` | *Optional[float]* | :heavy_minus_sign: | Credit limit for the API key to be created | 100 | | `usage_limit_type` | [Optional[operations.UsageLimitType]](../operations/usagelimittype.md) | :heavy_minus_sign: | Optional credit limit reset interval. When set, the credit limit resets on this interval. | monthly |