> ## 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 | |