---
title: "ContentCompaction"
---

## Fields

| Field                                                                                                                                                                                                       | Type                                                                                                                                                                                                        | Required                                                                                                                                                                                                    | Description                                                                                                                                                                                                 | Example                                                                                                                                                                                                     |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `cache_control`                                                                                                                                                                                             | [Optional[components.AnthropicCacheControlDirective]](../components/anthropiccachecontroldirective.mdx)                                                                                                      | :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. | \{<br/>"type": "ephemeral"<br/>}                                                                                                                                                                             |
| `content`                                                                                                                                                                                                   | *Nullable[str]*                                                                                                                                                                                             | :heavy_check_mark:                                                                                                                                                                                          | N/A                                                                                                                                                                                                         |                                                                                                                                                                                                             |
| `type`                                                                                                                                                                                                      | [components.MessagesMessageParamTypeCompaction](../components/messagesmessageparamtypecompaction.mdx)                                                                                                        | :heavy_check_mark:                                                                                                                                                                                          | N/A                                                                                                                                                                                                         |                                                                                                                                                                                                             |