> ## 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.

# MessagesMessageParamRole

## Example Usage

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

value := components.MessagesMessageParamRoleUser

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

## Values

| Name                                | Value     |
| ----------------------------------- | --------- |
| `MessagesMessageParamRoleUser`      | user      |
| `MessagesMessageParamRoleAssistant` | assistant |
| `MessagesMessageParamRoleSystem`    | system    |