add 'finding keys' script (#2858)

astro/src/content/docs/operate/secure-and-monitor/key-master.mdx

@@ -6,6 +6,7 @@ section: operate
 subcategory: secure and monitor
 ---
 import KeyMasterImportFormFields from 'src/content/docs/operate/secure-and-monitor/_key-master-import-form-fields.mdx';
+import {RemoteCode} from '@fusionauth/astro-components';
 import UpdateKeyNote from 'src/content/docs/_shared/_update-key-note.mdx';
 
 ## Overview
@@ -24,6 +25,14 @@ From this page, you can add and import keys and certificates as well as view and
 
 Select the operation from the menu on the listing page.
 
+### Finding Keys
+
+If you have a large number of tenants, applications and signing keys, you may have difficulty keeping track of them. While there is a [key search API](/docs/apis/keys#search-for-keys), it can also be helpful to use the [client libraries](/docs/sdks) to retrieve these.
+
+Here's sample code for retrieving all the keys that have been assigned to a tenant or application. You can learn more about [this community contributed script here](https://github.com/FusionAuth/fusionauth-contrib/tree/master/scripts/listkeys).
+
+<RemoteCode url="https://raw.githubusercontent.com/FusionAuth/fusionauth-contrib/master/scripts/listkeys/Program.cs" lang="csharp" />
+
 ## Importing vs Generating
 
 You can import keys and certificates. This is useful if you are integrating with an external system. For instance, you may be migrating from another auth system and want to import keys generated by that auth system to ensure anything signed with those keys will continue to work.