> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# CreateAuthKeysCodeRequest - Go SDK

> CreateAuthKeysCodeRequest type definition

<Warning>
  The Go SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/go-sdk/issues).
</Warning>

## Fields

| Field                 | Type                                                                                                                                 | Required             | Description                                                                                                   | Example                                                            |
| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------ | -------------------- | ------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------ |
| `CallbackURL`         | `string`                                                                                                                             | :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](https://myapp.com/auth/callback) |
| `CodeChallenge`       | `*string`                                                                                                                            | :heavy\_minus\_sign: | PKCE code challenge for enhanced security                                                                     | E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM                        |
| `CodeChallengeMethod` | [\*operations.CreateAuthKeysCodeCodeChallengeMethod](/client-sdks/go/api-reference/operations/createauthkeyscodecodechallengemethod) | :heavy\_minus\_sign: | The method used to generate the code challenge                                                                | S256                                                               |
| `ExpiresAt`           | optionalnullable.OptionalNullable\[[time.Time](https://pkg.go.dev/time#Time)]                                                        | :heavy\_minus\_sign: | Optional expiration time for the API key to be created                                                        | 2027-12-31T23:59:59Z                                               |
| `KeyLabel`            | `*string`                                                                                                                            | :heavy\_minus\_sign: | Optional custom label for the API key. Defaults to the app name if not provided.                              | My Custom Key                                                      |
| `Limit`               | `*float64`                                                                                                                           | :heavy\_minus\_sign: | Credit limit for the API key to be created                                                                    | 100                                                                |
| `UsageLimitType`      | [\*operations.UsageLimitType](/client-sdks/go/api-reference/operations/usagelimittype)                                               | :heavy\_minus\_sign: | Optional credit limit reset interval. When set, the credit limit resets on this interval.                     | monthly                                                            |