> ## 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.

# AnthropicDocumentBlockParam - TypeScript SDK

> AnthropicDocumentBlockParam type definition

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

## Example Usage

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

let value: AnthropicDocumentBlockParam = {
  source: {
    data: "Hello, world!",
    mediaType: "text/plain",
    type: "text",
  },
  type: "document",
};
```

## Fields

| Field          | Type                                                                                                                           | Required             | Description                                                                                                                                                                                                 | Example                 |
| -------------- | ------------------------------------------------------------------------------------------------------------------------------ | -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------- |
| `cacheControl` | [models.AnthropicCacheControlDirective](/agent-sdk/typescript/api-reference/models/anthropiccachecontroldirective)             | :heavy\_minus\_sign: | Enable automatic prompt caching. When set at the top level, the system automatically applies cache breakpoints to the last cacheable block in the request. Currently supported for Anthropic Claude models. | `{"type": "ephemeral"}` |
| `citations`    | [models.AnthropicDocumentBlockParamCitations](/agent-sdk/typescript/api-reference/models/anthropicdocumentblockparamcitations) | :heavy\_minus\_sign: | N/A                                                                                                                                                                                                         |                         |
| `context`      | *string*                                                                                                                       | :heavy\_minus\_sign: | N/A                                                                                                                                                                                                         |                         |
| `source`       | *models.AnthropicDocumentBlockParamSourceUnion*                                                                                | :heavy\_check\_mark: | N/A                                                                                                                                                                                                         |                         |
| `title`        | *string*                                                                                                                       | :heavy\_minus\_sign: | N/A                                                                                                                                                                                                         |                         |
| `type`         | *"document"*                                                                                                                   | :heavy\_check\_mark: | N/A                                                                                                                                                                                                         |                         |