> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# AnthropicCacheControlDirective - Python SDK

> AnthropicCacheControlDirective method reference

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

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.

## Fields

| Field  | Type                                                                                                                             | Required             | Description | Example |
| ------ | -------------------------------------------------------------------------------------------------------------------------------- | -------------------- | ----------- | ------- |
| `ttl`  | [Optional\[components.AnthropicCacheControlTTL\]](../components/anthropiccachecontrolttl.md)                                     | :heavy\_minus\_sign: | N/A         | 5m      |
| `type` | [components.AnthropicCacheControlDirectiveType](/client-sdks/python/api-reference/components/anthropiccachecontroldirectivetype) | :heavy\_check\_mark: | N/A         |         |