> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/api-and-command-reference/qwantifi-api-and-command-reference/pos-mqtt-api-reference.md).
# POS MQTT API Reference
The complete integrated application-facing endpoint surface for QwantiFi on Postman. These endpoints let an integrated application renew its own QwantiFi credential and look up its devices and topics at runtime. For the concepts and message flow behind them, see the [**Integration Guide**](https://developer.magtek.com/guides/guides/qwantifi/pos-integration-guide); for the credential model, see the [**QwantiFi Credential Model**](https://developer.magtek.com/guides/guides/qwantifi/qwantifi-credential-model).
{% hint style="info" %}
**Credential issuance is not on this surface.** You must contact MagTek/Magensa support to request them. There is no endpoint you can call to mint yourself a credential or a new refresh token. Everything here assumes you already hold both.
{% endhint %}
### **API Reference - Postman Collections**
| **API Section** | **Description** |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [**QwantiFi Cloud Management**](https://rmsv2.developer.magtek.com/#919d6207-be9d-41b6-942b-c9dadb1aa66a) | Parent group for the RMS cloud-management calls an integrated application or management host uses to configure QwantiFi-connected devices and manage their MQTT settings, keys, and status. |
| [**Update Device MQTT Configurations**](https://rmsv2.developer.magtek.com/#ba45f39d-4914-4d45-9861-ce95ccaf54f3) | Updates the QwantiFi configuration provisioned to a device — its broker connection and topic assignments — in RMS. |
| [**Update Device Status**](https://rmsv2.developer.magtek.com/#7592ccb9-be75-406c-b0ce-60ec5683f36a) | Updates a device's status record in RMS, such as its enrollment or connection state. |
| [**Configs/List (DynaFlex)**](https://rmsv2.developer.magtek.com/#ea2ed49a-4238-4258-8bc1-c15b310e3b66) | Returns the list of configuration profiles available for DynaFlex devices. |
| [**Configs Key Load (DynaFlex)**](https://rmsv2.developer.magtek.com/#9c35c948-2053-4893-a2d3-a5528aeb952c) | Initiates a key-load configuration for a DynaFlex device, injecting or updating its cryptographic keys. |
| [**Configs Key Load (DynaFlex Force update)**](https://rmsv2.developer.magtek.com/#1481e7a7-5ed9-4df3-8995-9fabce8ff009) | Re-runs the DynaFlex key-load configuration, forcing it even when the device already reports its keys as current. |
| [**Configs SCDE (DynaFlexIIGo)**](https://rmsv2.developer.magtek.com/#c2dbc0fd-e6cb-479a-a920-a762ad62dc57) | Applies the SCDE configuration profile to a DynaFlex II Go device. |
| [**Configs SCDE (DynaFlexIIGo Force update)**](https://rmsv2.developer.magtek.com/#036f3878-3b5a-4c88-8a48-0923352bed45) | Re-applies the SCDE configuration to a DynaFlex II Go device, forcing the update even if it is already present. |
| [**QwantiFi Self-Service API**](https://documenter.getpostman.com/view/33729815/2sBYB1MTR2) | Self-service endpoints for a point-of-sale (POS) application that already hold MagTek MQTT credentials. |
### Need More Help
{% hint style="info" %}
**Need Help?**
For additional support, please contact MagTek Support:
**Technical Support:**
* 📧 **Email:** [support@magtek.com](mailto:support@magtek.com?subject=Support%20Request)
* 📞 **Phone:** 1-562-546-6800 (US)
* 🕐 **Hours:** Monday-Friday, 5:30 AM - 5:00 PM PST
**Online Resources:**
* 🌐 **Support Portal:** developer.magtek.com
**Documentation Feedback:**
Help us improve this documentation! [feedback@magtek.com](mailto:feedback@magtek.com?subject=Feedback)
{% endhint %}
---
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