im.dialog.read

curl -X POST \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -d '{"DIALOG_ID":"chat1489","MESSAGE_ID":84875,"auth":"**put_access_token_here**"}' \
  https://**put_your_bitrix24_address**/rest/im.dialog.read

// This snippet is an ES module: top-level await requires type="module" or a bundler.
// $b24 is an already-initialized SDK instance (see the SDK "Get started" guide).
import { Text } from '@bitrix24/b24jssdk'
import type { B24Frame } from '@bitrix24/b24jssdk'

declare const $b24: B24Frame

// Shape of the payload returned in result (match the "response handling" section of the page)
type ImDialogReadResult = {
  dialogId: string,
  chatId: number,
  lastId: number,
  counter: number,
}

try {
  const response = await $b24.actions.v2.call.make<ImDialogReadResult>({
    method: 'im.dialog.read',
    params: {
      DIALOG_ID: 'chat1489',
      MESSAGE_ID: 84875,
    },
    requestId: Text.getUuidRfc4122()
  })

  // The payload is available only on a successful response
  if (!response.isSuccess) {
    console.error(response.getErrorMessages().join('; '))
  } else {
    const result = response.getData()!.result
    console.info(result.dialogId, result.chatId, result.lastId, result.counter)
  }
} catch (error) {
  // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
  console.error(error)
}

<!-- Load the SDK (UMD build); it is exposed as the global B24Js -->
<script src="https://unpkg.com/@bitrix24/b24jssdk@1/dist/umd/index.min.js"></script>
<script>
  async function markDialogAsRead() {
    try {
      // Initialize the SDK inside a Bitrix24 frame
      const $b24 = await B24Js.initializeB24Frame()

      const response = await $b24.actions.v2.call.make({
        method: 'im.dialog.read',
        params: {
          DIALOG_ID: 'chat1489',
          MESSAGE_ID: 84875,
        },
        requestId: B24Js.Text.getUuidRfc4122()
      })

      // The payload is available only on a successful response
      if (!response.isSuccess) {
        console.error(response.getErrorMessages().join('; '))
        return
      }

      const result = response.getData().result
      console.info(result.dialogId, result.chatId, result.lastId, result.counter)
    } catch (error) {
      // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
      console.error(error)
    }
  }

  document.addEventListener('DOMContentLoaded', markDialogAsRead)
</script>

from b24pysdk.errors import BitrixAPIError, BitrixSDKException

try:
    bitrix_response = client.im.dialog.read(
        dialog_id="chat1489",
        message_id=84875,
    ).response
    result = bitrix_response.result
    print(result)
except BitrixAPIError as error:
    print(
        "Ошибка Bitrix API",
        f"error: {error.error}",
        f"error_description: {error.error_description}",
        sep="\n",
    )
except BitrixSDKException as error:
    print(f"Ошибка Bitrix SDK: {error.message}")
except Exception as error:
    print(f"Непредвиденная ошибка: {error}")

try {
    $response = $b24Service->core->call(
        'im.dialog.read',
        [
            'DIALOG_ID' => 'chat1489',
            'MESSAGE_ID' => 84875,
        ]
    );

    $result = $response->getResponseData()->getResult();
    print_r($result);
} catch (Throwable $e) {
    error_log($e->getMessage());
}

BX24.callMethod(
    'im.dialog.read',
    {
        DIALOG_ID: 'chat1489',
        MESSAGE_ID: 84875
    },
    function(result)
    {
        if (result.error())
        {
            console.error(result.error());
        }
        else
        {
            console.log(result.data());
        }
    }
);

require_once('crest.php');

$result = CRest::call(
    'im.dialog.read',
    [
        'DIALOG_ID' => 'chat1489',
        'MESSAGE_ID' => 84875,
    ]
);

print_r($result);

// client и ctx уже созданы — см. раздел «SDK для Go»
res, err := client.Core().Call(ctx, "im.dialog.read", b24.Params{
	"DIALOG_ID":  "chat1489",
	"MESSAGE_ID": 84875,
})
if err != nil {
	return fmt.Errorf("im.dialog.read: %w", err)
}

var item struct {
	DialogID string `json:"dialogId"`
	ChatID   b24.ID `json:"chatId"`
	LastID   b24.ID `json:"lastId"`
	Counter  int    `json:"counter"`
}
if err := json.Unmarshal(res.Result, &item); err != nil {
	return fmt.Errorf("разбор ответа: %w", err)
}
fmt.Println(item.DialogID, item.ChatID)