---
title: "MessagesMessageParam"
---

Anthropic message with OpenRouter extensions


## Fields

| Field                                                                                              | Type                                                                                               | Required                                                                                           | Description                                                                                        |
| -------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- |
| `content`                                                                                          | [components.MessagesMessageParamContentUnion5](../components/messagesmessageparamcontentunion5.mdx) | :heavy_check_mark:                                                                                 | N/A                                                                                                |
| `role`                                                                                             | [components.MessagesMessageParamRole](../components/messagesmessageparamrole.mdx)                   | :heavy_check_mark:                                                                                 | N/A                                                                                                |