> ## 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.

# MessagesMessageParam

Anthropic message with OpenRouter extensions

## Example Usage

```typescript theme={null}
import { MessagesMessageParam } from "@openrouter/sdk/models";

let value: MessagesMessageParam = {
  content: "Hello, how are you?",
  role: "user",
};
```

## Fields

| Field          | Type                                                                              | Required             | Description | Example                        |
| -------------- | --------------------------------------------------------------------------------- | -------------------- | ----------- | ------------------------------ |
| `clearAt`      | [models.AnthropicSystemClearAt](../models/anthropicsystemclearat.mdx)             | :heavy\_minus\_sign: | N/A         | next\_user\_message            |
| `content`      | *models.MessagesMessageParamContentUnion5*                                        | :heavy\_check\_mark: | N/A         |                                |
| `outputConfig` | [models.AnthropicMessageOutputConfig](../models/anthropicmessageoutputconfig.mdx) | :heavy\_minus\_sign: | N/A         | \{<br />"effort": "low"<br />} |
| `role`         | [models.MessagesMessageParamRole](../models/messagesmessageparamrole.mdx)         | :heavy\_check\_mark: | N/A         |                                |