diff --git a/api-ref/source/os-keypairs.inc b/api-ref/source/os-keypairs.inc
index 042fb9a6d7dc..6880054c2d77 100644
--- a/api-ref/source/os-keypairs.inc
+++ b/api-ref/source/os-keypairs.inc
@@ -17,6 +17,13 @@ Normal response codes: 200
 
 Error response codes: unauthorized(401), forbidden(403)
 
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+  - user_id: keypair_user
+
 Response
 --------
 
diff --git a/api-ref/source/parameters.yaml b/api-ref/source/parameters.yaml
index 95e5d93633e6..4929d0340ad9 100644
--- a/api-ref/source/parameters.yaml
+++ b/api-ref/source/parameters.yaml
@@ -484,6 +484,14 @@ keypair_type_in:
   description: |
     The type of the keypair. Allowed values are ``ssh`` or ``x509``
   min_version: 2.2
+keypair_user:
+  in: query
+  required: false
+  type: string
+  description: |
+    This allows adminstrative users to list key-pairs of specified
+    user ID.
+  min_version: 2.10
 limit:
   description: |
     Requests a page size of items. Returns a number of items up to a limit value.