How to find all dashboards which use a specific filter

[gini_1010]

I need to delete a filter which is defined in LookML. Before doing that I need to know all the dashboards which use this filter.

If the filter is applied within a dashboard element, it can be queried using the System Activity Explore. However my filter is applied on the dashboard so no dashboards using this specific filter cannot be retrieved. Is there any way to achieve this on the System Activity Explore?

Another alternative way I can think of is using the API (Using the "Get All Dashboard filters" by requesting the all my dashboard ids one by one)

[ginandtobby]

Yes, you can do it using Looker API. Get all dashboards => loop through all dashboard ids to get dashboard details => check this particular field is used by which dashboards.