## Batch Create Messages

**post** `/messages/batch`

Batch Create Messages

### Body Parameters

- `contents: array of TaskMessageContent`

  - `TextContent object { author, content, attachments, 3 more }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

      - `"user"`

      - `"agent"`

    - `content: string`

      The contents of the text message.

    - `attachments: optional array of object { file_id, name, size, type }`

      Optional list of file attachments with structured metadata.

      - `file_id: string`

        The unique ID of the attached file

      - `name: string`

        The name of the file

      - `size: number`

        The size of the file in bytes

      - `type: string`

        The MIME type or content type of the file

    - `format: optional TextFormat`

      The format of the message. This is used by the client to determine how to display the message.

      - `"markdown"`

      - `"plain"`

      - `"code"`

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

      - `"static"`

      - `"active"`

    - `type: optional "text"`

      The type of the message, in this case `text`.

      - `"text"`

  - `ReasoningContent object { author, summary, content, 2 more }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `summary: array of string`

      A list of short reasoning summaries

    - `content: optional array of string`

      The reasoning content or chain-of-thought text

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "reasoning"`

      The type of the message, in this case `reasoning`.

      - `"reasoning"`

  - `DataContent object { author, data, style, type }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `data: map[unknown]`

      The contents of the data message.

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "data"`

      The type of the message, in this case `data`.

      - `"data"`

  - `ToolRequestContent object { arguments, author, name, 3 more }`

    - `arguments: map[unknown]`

      The arguments to the tool.

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `name: string`

      The name of the tool that is being requested.

    - `tool_call_id: string`

      The ID of the tool call that is being requested.

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "tool_request"`

      The type of the message, in this case `tool_request`.

      - `"tool_request"`

  - `ToolResponseContent object { author, content, name, 4 more }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `content: unknown`

      The result of the tool.

    - `name: string`

      The name of the tool that is being responded to.

    - `tool_call_id: string`

      The ID of the tool call that is being responded to.

    - `is_error: optional boolean`

      Whether the tool call resulted in an error. `None` when the harness does not report a status.

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "tool_response"`

      The type of the message, in this case `tool_response`.

      - `"tool_response"`

- `task_id: string`

- `created_at: optional string`

  Optional base timestamp. Each message in the batch is stamped with base + i milliseconds to guarantee unique, monotonic ordering. If omitted, the server stamps datetime.now(UTC) at insert time.

### Returns

- `content: TaskMessageContent`

  The content of the message. This content is not OpenAI compatible. These are messages that are meant to be displayed to the user.

  - `TextContent object { author, content, attachments, 3 more }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

      - `"user"`

      - `"agent"`

    - `content: string`

      The contents of the text message.

    - `attachments: optional array of object { file_id, name, size, type }`

      Optional list of file attachments with structured metadata.

      - `file_id: string`

        The unique ID of the attached file

      - `name: string`

        The name of the file

      - `size: number`

        The size of the file in bytes

      - `type: string`

        The MIME type or content type of the file

    - `format: optional TextFormat`

      The format of the message. This is used by the client to determine how to display the message.

      - `"markdown"`

      - `"plain"`

      - `"code"`

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

      - `"static"`

      - `"active"`

    - `type: optional "text"`

      The type of the message, in this case `text`.

      - `"text"`

  - `ReasoningContent object { author, summary, content, 2 more }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `summary: array of string`

      A list of short reasoning summaries

    - `content: optional array of string`

      The reasoning content or chain-of-thought text

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "reasoning"`

      The type of the message, in this case `reasoning`.

      - `"reasoning"`

  - `DataContent object { author, data, style, type }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `data: map[unknown]`

      The contents of the data message.

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "data"`

      The type of the message, in this case `data`.

      - `"data"`

  - `ToolRequestContent object { arguments, author, name, 3 more }`

    - `arguments: map[unknown]`

      The arguments to the tool.

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `name: string`

      The name of the tool that is being requested.

    - `tool_call_id: string`

      The ID of the tool call that is being requested.

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "tool_request"`

      The type of the message, in this case `tool_request`.

      - `"tool_request"`

  - `ToolResponseContent object { author, content, name, 4 more }`

    - `author: MessageAuthor`

      The role of the messages author, in this case `system`, `user`, `assistant`, or `tool`.

    - `content: unknown`

      The result of the tool.

    - `name: string`

      The name of the tool that is being responded to.

    - `tool_call_id: string`

      The ID of the tool call that is being responded to.

    - `is_error: optional boolean`

      Whether the tool call resulted in an error. `None` when the harness does not report a status.

    - `style: optional MessageStyle`

      The style of the message. This is used by the client to determine how to display the message.

    - `type: optional "tool_response"`

      The type of the message, in this case `tool_response`.

      - `"tool_response"`

- `task_id: string`

  ID of the task this message belongs to

- `id: optional string`

  The task message's unique id

- `created_at: optional string`

  The timestamp when the message was created

- `streaming_status: optional "IN_PROGRESS" or "DONE"`

  - `"IN_PROGRESS"`

  - `"DONE"`

- `updated_at: optional string`

  The timestamp when the message was last updated

### Example

```http
curl http://localhost:5003/messages/batch \
    -H 'Content-Type: application/json' \
    -H "Authorization: Bearer $AGENTEX_SDK_API_KEY" \
    -d '{
          "contents": [
            {
              "author": "user",
              "content": "content",
              "type": "text"
            }
          ],
          "task_id": "task_id"
        }'
```

#### Response

```json
[
  {
    "content": {
      "author": "user",
      "content": "content",
      "attachments": [
        {
          "file_id": "file_id",
          "name": "name",
          "size": 0,
          "type": "type"
        }
      ],
      "format": "markdown",
      "style": "static",
      "type": "text"
    },
    "task_id": "task_id",
    "id": "id",
    "created_at": "2019-12-27T18:11:19.117Z",
    "streaming_status": "IN_PROGRESS",
    "updated_at": "2019-12-27T18:11:19.117Z"
  }
]
```