# Backend - [How to use the transactional response token to debug a transactional API call?](https://doc.batch.com/developer/technical-guides/how-to-guides/backend/how-to-use-the-transactional-response-token-to-debug-a-transactional-api-call.md): Here is what you need to do when you want to check the effective sending time of a transactional push compared to the API call time. - [How to connect Batch to my CMS?](https://doc.batch.com/developer/technical-guides/how-to-guides/backend/how-to-connect-batch-to-my-cms.md): Connecting Batch to a CMS to send push notifications is straightforward. You can use our Campaigns API. - [How to send a silent push notification?](https://doc.batch.com/developer/technical-guides/how-to-guides/backend/how-to-send-a-silent-push-notification.md): You will find here all you need to know to send your first silent push notification to your user. --- # 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://doc.batch.com/developer/technical-guides/how-to-guides/backend.md?ask= ``` 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.