> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ExchangeAuthCodeForAPIKeyCodeChallengeMethod

The method used to generate the code challenge

## Example Usage

```go theme={null}
import (
	"github.com/OpenRouterTeam/go-sdk/models/operations"
)

value := operations.ExchangeAuthCodeForAPIKeyCodeChallengeMethodS256

// Open enum: custom values can be created with a direct type cast
custom := operations.ExchangeAuthCodeForAPIKeyCodeChallengeMethod("custom_value")
```

## Values

| Name                                                | Value |
| --------------------------------------------------- | ----- |
| `ExchangeAuthCodeForAPIKeyCodeChallengeMethodS256`  | S256  |
| `ExchangeAuthCodeForAPIKeyCodeChallengeMethodPlain` | plain |