# Notification Filter At bunq we have a range of different Notification Filters. These are specific endpoints that allow you to filter for specific from our system. For most use cases you'll want to use the [Notification Filter URL](/notification-filter/notification-filter-url.md) where you will set up a webhook that the bunq server can call when mutations happen. So that your system can handle that transaction. \ \ When implementing Notification Filters it's good to also read up on [Callbacks (Webhooks)](/basics/callbacks-webhooks.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://doc.bunq.com/notification-filter.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.