# Retrive and register functions

- [Get balance](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-balance.md)
- [Get the message status](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/ham-kiem-tra-trang-thai-tin-nhan-theo-khoang-thoi-gian.md)
- [Get SMS by SMSID](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-sms-by-smsid.md)
- [Get message details](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-message-details.md)
- [Get list registered brandnames](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-list-registered-brandnames.md)
- [Get list customer care templates](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-list-customer-care-templates.md)
- [Summary your customer care submit](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/summary-your-customer-care-submit.md)
- [Summary your advertising submit](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/summary-your-advertising-submit.md)
- [Get list OA](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-list-oa.md)
- [Get list templates of OA](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-list-templates-of-oa.md)
- [Summary Zalo message](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/summary-zalo-message.md)
- [Get the daily quota of OA](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-the-daily-quota-of-oa.md)
- [Get rating information of Zalo users](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-rating-information-of-zalo-users.md)
- [Check the OA quality](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/check-the-oa-quality.md)
- [Get list Zalo's followers](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-list-zalos-followers.md)
- [Get callback data](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-callback-data.md)
- [Get Zalo template details](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-zalo-template-details.md)
- [Purchase OA package](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/purchase-oa-package.md)
- [Registering the Zalo template](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/ham-dang-ky-template-zalo.md)
- [Registering SMS template](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/registering-sms-template.md)
- [Get ZNS status information](https://developers.esms.vn/en/esms-api/retrive-and-register-functions/get-zns-status-information.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.esms.vn/en/esms-api/retrive-and-register-functions.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
